question stringlengths 19 6.88k | answer stringlengths 38 33.3k |
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Problem Statement: In the tables the columns can be made wider or smaller, by just dragging the column border to the right or left. The column can be made so small that it is not visible anymore, even though the properties for the table shows that column as a selected attribute. How can the column be made visible again... | Solution: Go to the top of the table to the row with the headers of the columns. In the place where the collapsed column is, move the mouse over the border of the column till the mouse changes shape to a vertical line with two arrows, one in each direction. Now double click with the left mouse button and the column wil... |
Problem Statement: When we have a mixture, how do we calculate the viscosity of the pure components? | Solution: TheSolution is to create a set of auxiliary composition arrays with single component composition.
Model Pure_Viscosity
//Variables declaration
T as temperature(value: 25.0, fixed);
P as pressure(value: 101325.0, fixed);
x(ComponentList, ComponentList) as molefraction;
visc(ComponentList) as visc_liq;
//... |
Problem Statement: What is a governing case and how do I change it? | Solution: Governing case is the worst case or controlling case for which equipment, lines, valves etc. are designed for.
You can change governing case from Explorer from Case || Governing case option and change it to set global default or set object governing case.
Keywords: Governing case.
References: None |
Problem Statement: How to access connected user information to a particular workspace? | Solution: To access connected user information, follow these steps:
1. Open Aspen Basic Engineering (ABE) Administration tool.
2. Select the workspace for which you want to check connected user information
3. Once you are connected to workspace it will show you five more option as shown in screen capture below.
4. Doub... |
Problem Statement: The following equation does not calculate the value for x(10) because of way in which Operation of Sets works in Aspen Custom Modeler.
$x([2:10]) = -(x([2:10]) - x([1:9]) ) / 0.01 ; | Solution: Array equations in Aspen Custom Modeler are different to those in SPEEDUP.
When Aspen Custom Modeler generates individual equations from an array expression it intersects the index sets of the array variables starting from the left i.e.
[2:10] intersection [2:10] = [2:10]
[2:10] intersection [1:9] = [2:9]
Th... |
Problem Statement: User defined Stream Types usually have defined variables, which can be easily accessed in scripts. On the other hand Connection Stream Type does not have any variables associated with it. It matches variables by name to pass on the information from one block to another.
It is still possible to open a... | Solution: The following script created in the flowsheet will find both variables in user defined streams (where they exist) and variables associated with Connection type streams, that do not have variables themselves, rather use variables from the block ports they are connected to. The comments in the code explain each... |
Problem Statement: Does Aspen Custom Modeler (ACM) support inverse trigonometry functions? | Solution: ACM supports inverse trigonometry functions, and the value returned is always in radius unit. For example, ASIN will always return value in radius, not in degree.
Keywords: inverse trigonometry function
References: None |
Problem Statement: What could prevent the Aspen Datasheet tab from appearing in the Aspen Basic Engineering (ABE) V8.0 Excel datasheet editor? | Solution: In ABE V8.0, if everything is installed properly then you should see Datasheet tab when you will open Excel datasheet editor. If it doesn't appear, you can check a few things as below:
1. In Excel options | Add-ins, under COM Add-ins, the checkbox for AZDSExcelAddin is active. If not, check it.
2. In Excel op... |
Problem Statement: Why does using an expression such as:
PP = ACOS(x)
in the model equation cause an access violation and errors as follows?
ERROR :
Solver thread has been terminated, due to :
Server failed due to Access Violation | Solution: The reason for the access violation is that ACOS(x) is special when x=1.0 and we need the derivative wrt X
For example, the formula for the derivative of ACOS(x) is:
d(ACOS(x)) = -d(x) / SQRT(1.0 - (x^2))
When x=1.0, the denominator reduces to zero which causes the solver to crash.
The workaround is as follo... |
Problem Statement: When installing Aspen Custom Modeler (ACM) V7.1 into a box where earlier releases of ACM might have been installed, sometimes the dynamic link libraries decompserver.dll and integratorserver.dll are not registered correctly and consequently when a ACM model is run later on, ACM reports error message ... | Solution: Manually registering the following dynamic link libraries solves the problem. Open up a DOS window and go to AOS bin folder such as
C:\Program Files\AspenTech\Aspen Open Solvers V7.1\Bin
and then do
regsvr32 decompserver.dll
regsvr32 integratorserver.dll
Keywords: UnifiedIntegrator, invalid, server, registry
... |
Problem Statement: How does the Aspen Custom Modeler integrator work in Aspen HYSYS when running exported Aspen Custom Modeler dynamic models in Aspen HYSYS? | Solution: ACM model in HYSYS will not use the HYSYS integrator (which is an equivalent to Fixed-Step Explicit Euler). The exported ACM model still use ACM integrator when in dynamics. Currently we don't provide an option to select ACM integrator on HYSYS interface. This means the user has no choice but to use the setti... |
Problem Statement: Invoking scripts in tasks does not always work in the way you might expect.
For example if you have a task that makes the following step change:
Task example1 runs when time == 0.2
Tank1.Flowout.flow : 4;
End
this changes the value of the flow to 4. This is a simple assignment in a task.
You could... | Solution: Use scripts in tasks with care.
Depending on what you intend to do within the script, there are two possibleSolutions:
avoid having conflicts in assignments (make all the changes in the script or all in the task, but not a combination of the two)
use inputs and outputs variables to force the assignments to be... |
Problem Statement: Inheritance does not allow the user to change or overwrite an equation in Aspen Custom Modeler | Solution: In Aspen Custom Modeler you can use inheritance to add equations to a model, but you can't overwrite an equation or change it.
View the attached example for a tank. In Tank 1, the Area was fixed at some value. The level was defined by the following equation.
level = l/h;
If you were to try to create a new mo... |
Problem Statement: How do I connect the Aspen Custom Modeler client to a remote OPC Server? | Solution: Aspen Custom Modeler (ACM) only officially supports connection to an OPC server running on the same machine. However, it is possible to get ACM to think that the remote OPC connection is local. Both computers (remote server and client PC) are running Windows XP SP2.
Install the OPC server on both PCs. The i... |
Problem Statement: How do I store the history of an attribute in the database and view it? | Solution: You can store the history of attributes by enabling the audit parameter in the configuration file. The audit parameter can be specified either in the library set configuration file or workspace.cfg file. If you specify it under library set configuration file, audit will apply to all of the workspaces that are... |
Problem Statement: When sharing ACM models with endusers sometimes you may want protect proprietary information contained within the model. How do you prevent the enduser from accessing the model contents but still be able to use the model in a flowsheet? | Solution: To prevent access to the model contents, create the model using the keyword PRIVATE. For example...
PRIVATE MODEL ModelName USES InheritedModel
ModelStatements
END
After building the model, create a library that includes the model from the File | Create Library... menu to share with endusers. After the en... |
Problem Statement: Why can't I change the format of a datasheet field when exporting to Excel from Excel datasheet editor? | Solution: When you export datasheet from excel datasheet editor to excel, the exported excel files are password protected, so that is the reason you can not change the format (format option is grayed out).
To change the format follow the below mentioned steps.
For Excel 2003
1. Click on Tools | Protection | Unprotect s... |
Problem Statement: How do I remove the border around all text in a workspace? | Solution: To remove border for all dumb text in an entire workspace, the easiest way is to write a Query and run it using query editor. Below is the step by step instruction on how to use Query editor to do this task,
NOTE: This query will remove border for all dumb text and this procedure is not reversible.
1. Ope... |
Problem Statement: How do I retrieve Henry's law coefficients using procedure pParamBinT? | Solution: Procedure pParamBinT is a physical property procedure that returns the values of temperature dependent binary component property parameters.
For Henry's law coefficients, the syntax is given below:
HPARAM(componentlist, componentlist, [1:7]) as realvariable;
call (HPARAM) = pParamBinT(HENRY,1);
Attached i... |
Problem Statement: How can I do a sensitivity analysis, i.e. to vary some fixed variables within a range and repeat steady state or initialization runs for these values? | Solution: You can use the automation methods to do this, from a macro in Excel or another program supporting Visual Basic.
The attached file shows how to do this with a flowsheet script. You need to create two flowsheet tables:
VaryVariables
ResultsVariables
On the VaryVariables table, you need to put all the (fixed) v... |
Problem Statement: Need to use the Costing Interface to transfer data between Zyqad 11.1 and KBase 2004 | Solution: Replace the ITSServer10.dll delivered with Zyqad 11.1 with the attached.
Close all Zyqad and KBase applications
Download the ITSServer10.zip and extract the ITSServer10.dll to the C:\Program Files\AspenTech\Aspen Zyqad 11.1\client\bin folder
Go to Start -> Run -> type regsvr32 C:\Program Files\AspenTech\Aspen... |
Problem Statement: You have both a Vessel and an Agitator datasheet, but each has its own NormalContents. You want these contents to be the same, since the Agitator is in the Vessel. | Solution: You need a knowledge base (KB) item that does the below:
- Use the Clone capability to keep the contents synchronized
- Write a Demon that executes when the Agitator is assigned a Parent object
- Use a Clone as the NormalContents for the Agitator
The demon described above is attached. Download the .azkbs fi... |
Problem Statement: Where are the bitmap files saved on the server to be available for datasheets? | Solution: The bitmap file(*.bmp) files are always saved under Template folder under AspenZyqadServer which by default is located under C:\AspenZyqadServer\Basic Engineering**.x\WorkspaceLibraries\Templates directory. When you create a bitmap field in datasheet, it look under this directory to populate the list of all *... |
Problem Statement: What name appears for the datasheets in end-user applications?
or
I have created a datasheet but it doesn't display in list of datasheets in end-user applications. Why? | Solution: When you define a datasheet using Datasheet Definer,Title for the Datasheet is entered under Datasheet properties. The Datasheets always appear with this Title under end-user applications. You should not search for the name of datasheet specified for *.xls or *.ztf file.
Keywords:
References: None |
Problem Statement: What are the elements reported in the Heat Transfer Resistance Diagram for Aspen Plate Exchanger? | Solution: The resistance diagram can be found at Results | Thermal / Hydraulic Summary | Performance
It shows the thermal resistance between the hot side and cold side streams broken down into five components along the length of a horizontal bar.
The five resistances are:
· Hot Side stream
· Hot Side ... |
Problem Statement: Aspen Plate exchanger contains Aspen HTFS proprietary single-phase correlations for plate heat transfer and pressure drop behaviour. These have been developed from research on a wide range of fluids and plate configurations for cross corrugated plate combinations. The methods do include asymmetric ... | Solution: Defining Plate Geometry and Conductivity
The program allows the user to specify the basic plate geometry:
Here in addition to other key dimensions, the user can specify directly the reference heat transfer area.
Where plates are constructed from a non-standard material, the user can specify directly the mater... |
Problem Statement: What is the basis of selecting 'Fraction of Feed S Processed' in FCC Reactor Feed properties? | Solution: The fraction of feed sulfur processed defines the propensity of the sulfur to crack to H2S or remain as compounds in heavy liquid products.
The value ranges from zero to one. Zero will maximize cracking to H2S. One will minimize cracking to H2S and force the sulfur to appear in the heavier liquid products... |
Problem Statement: How does one delete a nozzle in Aspen Zyqad? | Solution: In order to delete a nozzle from a list, one must write a method. The following example demonstrates the syntax required to delete the fifth nozzle from the list:
[?Class=PressureVessel,
Interactive=True,
Secure=False?]
AZMethod RemoveNozzle ()
Set Nozl=self.Nozzles(5)
Nozl.DetachFromParent
End ... |
Problem Statement: Message Que Full / Message Que Information | Solution: The file ctlr.eng in the controller directory gets the ENG que information. It should have the messages marked for that que in message.dat since midnight. Yesterdays messages are in the ctlr.bck file in the same directory. DMCplus View should also show all eng que messages within its que size limit.
The TYP q... |
Problem Statement: How does DMC engine handle license check-out for offline tools v/s online tools? | Solution: Aspen DMCplus consists of two types of tools-
· Desktop tools i.e. DMCplus Builder, DMCplus Model and DMCplus Simulate
· Online tools i.e. APC Manage and APC Online/Controller
In the event of licenses being lost, any DMCplus desktop tools that are open will detect the unavailability of the l... |
Problem Statement: *.sym file association is lost after uninstalling coexistent version of Aspen Basic Engineering or Aspen Economic Evaluation
OR
Uninstalling coexistent versions of Aspen Basic Engineering or Aspen Economic Evaluation removes the .sym file association resulting in symbols not displayed correctly i... | Solution: After uninstalling coexistent versions of Aspen Basic Engineering or Aspen Economic Evaluation Restore file, if *.sym file association is lost, it can be restored using the windows explorer
1. Select a graphical symbol *.sym file.
2. Right-mouse click/Properties.
3. Click Change button next to Opens with an... |
Problem Statement: When using a given plate and increasing the length (vertical port centers distance), the pressure drop may be noted to reduce. This is opposite to what would normally be imagined, where you would expect an increase in the plate frictional pressure drop. | Solution: It is possible that the Area of plates(s) has been specified, which allows for the corrugations (and sometimes known as the developed area) and is not the projected area. The mean hydraulic diameter, De, can be defined as
Volume of flow channel 4 x ... |
Problem Statement: As Zyqad Administrator, you have a new feature but not prepared to role out to your users just yet, but cannot prevent it using Privileges. | Solution: You need to do the below:
1. Identify key classes that are created by the feature
2. Write a Create Event rule for those classes
3. Have the object delete itself
The Event described above is attached. Download the .azkbs file, edit the kb so that it is applicable to the relevant classes, compile to create .... |
Problem Statement: A simulation is converged, then a variable is changed by a small amount, and the simulation is run again. However, it is now failing to converge after exceeding the maximum number of iterations. Surprisingly, after hitting the run button again, the simulation is now converging.
This is very strange b... | Solution: ?Solution
After the change to the variable, the nonilinear group starts off with a small equation norm (typically, the size of the step change of the variable). The next iteration, the equation norm jumps up and only very slowly starts coming down in subsequent iterations. However, it does not reduce fast eno... |
Problem Statement: How do I customize the Aspen Exchanger Design and Rating (EDR) Main toolbar/Program toolbar to re-organize the icons? | Solution: To re-organize the Aspen EDR Main toolbar/Program toolbar icons you have to double click on the Main/Program toolbar by using the left mouse button. When you double click with mouse the program will bring up a new Customize Toolbar window as shown below.
In the Customize Toolbar window you can move the toolba... |
Problem Statement: Is there a way to globally make TCP/IP the default setting? | Solution: The only way to set this option is through the software.
TCP/IP or DCOM is configured at the client and workspace level. For example, the user would select this option the first time a workspace is opened. The chosen transport option will be reused by default each subsequent time the workspace is opened. If... |
Problem Statement: How can I export a drawing from one workspace to another? | Solution: User can export a drawing from one workspace and import to another using one of 2 ways:
Export and import of whole diagram
1. Load AZExplorer, log onto workspace, create a new folder and add desired diagram into Folder
2. Folder ->Export package and save the .zpkg format file
3. Close current workspace and ... |
Problem Statement: When I tried to read the previous version(2006.5) simulation file, Simulation application results in the Unexpected file format error message or leads to application crash. | Solution: To open an existing process simulation file (with a .psm extension):
1. From the main menu, click File | Open, or from the toolbar, click the Open button. The Open dialog box displays.
2. Select the drive and directory where the .psm file is located. The dialog is set to display files with a .psm file... |
Problem Statement: Aspen Zyqad v2006 does not work any longer after installing Aspen Zyqad Cumulative Patch 3 from the Patches page on AspenTech Support Center.
The Aspen Zyqad Admin tool successfully launches and allows workspace creation. However other applications like Aspen Zyqad Explorer bring up a splash screen a... | Solution: The problem is due to the monitor setting (250). Changing the monitor setting to 32 bit color resolves this issue.
Keywords: Zyqad, CP3, SplashScreen, Screen
References: None |
Problem Statement: Aspen DMC plus controllers show Sync_write errors in the Production Control Web Server messages. | Solution: Sync writes/ Synchronous write means the data is written in the order it is updated, and the operating system doesn't do any reordering or optimizations.
At times, after turning on Aspen DMC plus online controller, the controller shows multiple instances of Sync_Write error messages and further the controlle... |
Problem Statement: How do I calculate bubble/dew point pressure of a mixture? | Solution: Bubble/dew point pressures can be calculated using property sub models. The key point is to specify vfr=0 when determining bubble point, and vfr=1 for dew point, or any value specified in between for splits in between. See sample code below -
Model Calculate_Bubble_Dew_points
T as temperature(fixed);
p as pre... |
Problem Statement: Initial values of array variables can sometimes appear arbitrary. Also they are different depending on whether eliminate equivalence variables is selected. Why? | Solution: If you have some variables that get eliminated due to equivalencing to create a single equivalence variable, the default value of the equivalence variable is the arithmetic mean of those for the original variables. To see this run this model at maximum print level:
Model test
x as notype(1);
y as notype(2);
z... |
Problem Statement: What flags are saved as SNAPSHOTS in ACM V 7.0 or later? What is the purpose of these Bit mask? | Solution: The flags saved in snapshots are used to restore the state of variables and parameters in the simulation engine. The major reason for this is to prevent default values from being flagged as user entered when a snapshot is loaded.
The flags saved are:
DAES_SELECT_FIXED 0x00000080 fixed variable
DAES_SELECT_P... |
Problem Statement: Can Aspen Basic Engineering V7.3 and V8.0 be installed on the same local PC without affecting the functionalities of these products? | Solution: Aspen Basic Engineering V8 is co-existent with earlier releases including V7.3 since they use their own workspaces and workspace libraries, there are no interactions between each other, and they can operate in the same local PC without any trouble.
Note: There is only one known issue and it happens when the... |
Problem Statement: Why is Aspen Basic Engineering (ABE) Administration Tool (AZAdminTool) using multiple license keys? | Solution: If multiple ABE workspaces are opened under console tree through AZAdminTool then each workspace will use a separate ABE license.
To release the license key refresh the AZAdminTool by clicking on the refresh button.
Keywords: Administration, Admin, license, AZAdminTool
References: None |
Problem Statement: If you review the calculation details under Results, you will see that a tab showing an Interval Analysis is displaying. What does it refer to? How is this being calculated? | Solution: Interval analysis only available in Rating and Simulation modes. Checking (Rating) or Simulation calculations are performed on a step by step basis along each pass of the exchanger. 25 calculation steps are used and detailed allowance can be made for non-linear heat load curves and fluid properties which vary... |
Problem Statement: Why is Aspen Plate Exchanger is over-sizing the exchanger in design mode? | Solution: Try changing the Calculation Mode under Input | Problem Definition | Application Options from Design (given plate) mode to Design mode. The Design (given plate) mode selects the most appropriate design from a pre-defined set of plate designs. The Design mode selects a geometry that is not linked to products o... |
Problem Statement: How can I open Aspen Basic Engineering applications directly from explorer? | Solution: To open an application from Aspen Basic Engineering (Zyqad), you can pull down Tools menu in explorer. By default, Tools menu has four applications listed in: Simulation importer, Thermal design, Cost estimation, Drawing editor, those you can open by clicking on it. If you want to add another application e.g.... |
Problem Statement: What are the different areas reported in Aspen Plate? | Solution: From the Results > Mechanical Summary > Exchanger geometry > Plates tab, the program will show the plate area. This can be either calculated by the program, or if it is available to you entered from Input > Exchanger Geometry > Plate Details > Plate Details tab, which is the best option as this takes into ac... |
Problem Statement: Can you provide an example of a procedure implemented in C, which handles arrays? | Solution: The template that is generated by ACM is essentially mapping the function arguments pInputs and pOutputs, which are the arrays collected by ACM in the simulation variables, to the arguments of the procedure as declared. Let's look at the input arguments: they are collected in the array pInputs. pInOffs are th... |
Problem Statement: My reboiler/condenser heat curves are not getting transferred to my heat exchanger object in Aspen Zyqad | Solution: The column- reboiler/column-condenser are treated as a UODistillationStage. In the Simulator Interface, the attributes imported for the UODistillationStage are just the tray attributes. To get the heat curves data from Reboiler/Condenser within a column into Zyqad, you would need to use a pseudo stream.
In A... |
Problem Statement: I need some way of terminating leftover, stray AZ131server.exe processes that did not close correctly when the client connection was terminated. | Solution: Download the attached application file to a folder on the Zyqad server machine, and run accordingly.
****************************************README.TXT******************************************
The AZCleanup utility serves to clean up inactive sessions which have been registered on the Zyqad Server and not ... |
Problem Statement: How to return derivatives from a procedure. | Solution: During the non-linear equations reSolution, the Newton solver needs to evaluate the value of the residuals and the jacobian matrix. This is done analytically for equations implemented using Aspen Custom Modeler language. For the external code implemented in procedures, the user has the option to return deriva... |
Problem Statement: How to create a database from Microsoft SQL Server Management Studio Express and workspace from ABE Administration Tool? | Solution: In order to create a database from Microsoft SQL Server Management Studio Express and workspace from ABE Administration Tool, follow the step-by-step procedure detailed below:
1) Go to Start | Microsoft SQL Server 2XXX | (Right-click and Run as Administrator) SQL Server Management Studio Express:
2... |
Problem Statement: Why are READ parameters not updated in the DCS if there is a calculation in the ccf? | Solution: Every time a DMCplus controller runs, it performs a READ on all the parameters that have CIMIO tag connections and stores them into the DMCplus Context. Then INPUT calculations are performed on these parameters in the Context before they go into the DMCPlus engine. The output from the DMCplus engine updates t... |
Problem Statement: How do I delete 'Project' from workspace? | Solution: Lets say if you have a workspace Test1 and project Project1 in this workspace.
To delete this Project1,
Connect to the workspace Test1 through explorer (Start ll Program Files ll Aspen Tech ll Aspen Basic Engineering ll Explorer).
Select Project Management option from Edit option in toolbar
Select the project... |
Problem Statement: Some customers use a Mass Balance label which, unlike the default label, doesn''t cover the whole width of the drawing. | Solution: ThisSolution includes new files which allows the user to create a Mass-balance grid where the number of columns depends on the number of streams displayed in the grid.
The procedure to install this new Mass balance label is:
1- Copy the file Stream MB First.sym in the directory \Program Files\AspenTech\Workin... |
Problem Statement: What port numbers are used by AZ2004 for client-server communications? | Solution: Zyqad 2004 uses DCOM and it will allocate the port number internally.
DCOM ports required ?
Port 135 ? used by the DCOM Service Control Manager to communicate to the clients the ports allocate to objects.
Ports range 1024-65535. Default range used by DCOM. Dynamically allocated by the SCM (DCOM Service Cont... |
Problem Statement: How to apply a filter on a drawing. | Solution: The function View=>Filter By Category of the Drawing Editor can be used to hide some symbol/label on a drawing based on a category. The category must be set in the properties (File=>Document properties or question mark icon) of the symbol/label when defined with the Graphic Definer tool. There are different c... |
Problem Statement: How to use the AdHoc report functionality from the Datasheet Editor and Excel Datasheet editor? | Solution: There is a new functionality starting from V2006.5 which allow user to quickly create report from the datasheet editor. You first need to select the fields that you want to have on the report and then click on the function AdHocReport=>Add Field(s). Multiple selection of fields is allowed by the application. ... |
Problem Statement: CVs that have XFORMs (such as PWLN and LOG) and the DEPW values for those are coming out very different from the DEP values. This can make controller tuning difficult. | Solution: DEPW is just a copy of DEP just after Input Calcs are finished and prior to performing transforms or control calculations.
Keywords: DEP
DEPW
XFORM
Input Calc
References: None |
Problem Statement: A CCF calculation is changing a value for standard entries but it is not written out to the DCS | Solution: Standard entries with READ or RDWRT key word in the CCF are first read in from the DCS in the beginning of a control cycle. After the read, the entries can be manipulated by the CCF input calculations and then transformed (if specified) before it is used by the DMCplus engine.
The outputs from the engine ar... |
Problem Statement: Once we register the workspace with smart plant after that how can we find that the workspace is registered to which SPF plant? | Solution: With the explorer tool add the <F-1 GlobalClass> object into a folder. Double-click on the object to see the attribute. You should see a Plant subobject which has the SPF plant name specified under the name attribute.
Keywords:
References: None |
Problem Statement: This article explains ICL Ltd.'s DAIS Trader and how it is utilized within AspenTech's software. | Solution: DAIS Trader is a third-party commercial implementation of the Object Management Group's (OMG) Common Object Request Broker Architecture (CORBA) open standard for distributed applications. It allows programs to share objects across processes and machines. DAIS Trader supplies a trading service that provides a ... |
Problem Statement: Trader.exe fatal error while shutting down windows XP SP3 with DMCplus desktop. | Solution: Run gpedit.msc from Start -> Run.
In group policy, Under User configuration -> Windows Settings -> Scripts (Logon/Logoff), double click logoff and Click Add. Input NET to script name and stop DAIS_TRADER to scripts parameters. Please see below for detail.
Keywords: Trader.exe
XP SP3
Fatal error
Winntfy_init... |
Problem Statement: DMCplus Manage V7.1 will not start on Windows Server 2008 SP1 | Solution: Run manage as administrator.
You can do this by right clicking on the shortcut icon and selecting run as administrator. He can also select the properties of the shortcut and select the checkbox that will always run as administrator. As long as the user account has administrator privileges then this should w... |
Problem Statement: Which code is used for the Document Management in V7 | Solution: In Aspen Basic Engineering v7, the standard library set (StandardLibrarySet.cfg) doesn't use the KB script file DocumentManagement.azkbs. The code is implemented in a compiled data service module called DocumentManagement161.DataServiceImpl.
For customization, user can either modify the data service module us... |
Problem Statement: How to view/modify Global data in Zyqad | Solution: Please follow the instructions below to view/modify global data in Zyqad:
1/ To modify the global (project level) data, you can go to Explorer and open the workspace.
2/ You can then create an object by right-clicking on an existing folder (or create a new folder first) and select Add Object.
3/ From the li... |
Problem Statement: How to find stray drawing components that exist outside the drawing sheet? | Solution: To find the stray component,
1. Load the drawing in Drawing Editor
2. Click on the r-click on the toolbar -> Customize. Select Edit category and drag and drop the Binoculars icon to the Toolbar. This tool is used to find items outside the drawing area.
3. Click the Binoculars to display list of items outside ... |
Problem Statement: Error message ORA-12638: Credential retrieval failed received when creating workspace or during backup of workspace using the AZBackup tool. | Solution: This is a known oracle problem and theSolution is to change the setting SQLNET.AUTHENTICATION_SERVICE located in the file sqlnet.ora (e.g. C:\oracle\ora90\network\admin\sqlnet.ora).
Change the line:
from SQLNET.AUTHENTICATION_SERVICES = (NTS)
to SQLNET.AUTHENTICATION_SERVICES = (NONE)
Keywords: Server
Ora... |
Problem Statement: How to create a new dimension set? | Solution: 1) Open Class library editor.
2) In the Quantity Type page, select the 'Unit Sets' folder.
3) Right-click and select 'Insert Unit Set'.
4) In the dialog, Name the unit set, its description and set the default UOMs for each quantity by double clicking on it/or highlight quantity and press 'change UOM' button.
... |
Problem Statement: The Honeywell CM50 software uses LAT protocol. The default LATCP circuit timer is 80 milliseconds. A 100% increase in throughput can result from changing this value to 20. | Solution: Set interactive
Changing this value interactively requires that DMCplus controllers and other Cim-IO clients be stopped before implementing the change. Use the commands below to make the change. Then restart the DMCplus controllers and other Cim-IO clients.
$ mcr latcp
> show node
> set node/state=off
> set n... |
Problem Statement: What is the meaning and purpose of the CVCST entry in the dependent variable section? Is this CV cost really used in the LP calculation? If so, how and in what form does it show up in the objective function equation? | Solution: CVCST refers to the cost of a dependent variable. The DMCplus optimization algorithm uses the CVCST parameter in the objective function in addition to the MV costs (CST). The cost objective function ignoring movement variables and CV violations is:
Objective function = Sum over all i (MV_i * MV Cost_i) + Su... |
Problem Statement: Some useful information about MPF_Manage and IDB_test_CIMIO, for Aspen DMC plus controller
or
What is MPF, and its relationship with Aspen DMC plus controller?
or
What is the difference between IDB_TEST_CIMIO and Test_API? | Solution: Below are some of the information regarding MPF Manage and IDB_test_CIMIO.
1. Can MPF_Manage be used for Aspen Process Control- Finite Impulse Response controller? As it is well known that Aspen Process Control- Finite Impulse Response controller is based on Aspen Process Control platform, the folder st... |
Problem Statement: Can an APC online server run a mix of perpetual and token applications? | Solution: An APC online server can only run either perpetual or token applications but not both. During the installation, the user has to use different DVD to install either perpetual APC software or token APC software. We also provide an utility to convert perpetual to token software after the installation, 134558.
... |
Problem Statement: When loading the controller, a warning message appear
Warning validating tag: DBVL XXXX.XXX.XX :
CIMIO_OPC_VARIANTCHANGETYPEFAILED, The call to VariantChangeType failed
What does it mean and how to fix it? | Solution: The message CIMIO_OPC_VARIANTCHANGETYPEFAILED indicates that CIMIO for OPC can not convert the original OPC message to a specified type. In this case, it is DBVL (DATABASE VALUE), a 32-bit real number. This error happens when there is a mismatch type between the DCS value and what CIMIO expects. For exampl... |
Problem Statement: From V 7.1 DMCplus started to support token license. And, its software license agreement says token consumption is based on the number of MV(Manipulated Variable). DV(Disturbance variable) is another independent variable. License agreement does not say if DV consumes token or not. | Solution: DV does not consume Tokens.
Keywords: Token
DV
Disturbacne Variable
References: None |
Problem Statement: How do I setup a broker file to create default SQL workspace? | Solution: 1. Check which account is used for the Zyqad Broker service (AZ151Broker) on the Zyqad server.
2. Make sure that both SQL Server and Windows authentication is enabled on your SQL Server instance.
3. Add the account used by the broker in the security=>Logins of the SQL Server instance. In the serve... |
Problem Statement: I want to be able to set the Governing Case for my equipment from the Datasheet Editor. | Solution: The ability to set the Governing Case in this application in not available as a menu item, as it is in the AZ Explorer However, user can use the method attached.
1. Save the .azkbs and .azkbz files to the \KBS folder
2. Edit the relevant StandardModelLibrary.cfg file such that the KBS list include the attac... |
Problem Statement: Getting message RPC Server is unavailable when trying to log onto a workspace | Solution: The error above can be caused by either of the below:
1. Congested network
- check with your network administrator if there is a network problem
2. Unable to check out licenses
- if some users are able to log onto workspaces and essentially check out licenses, you should check that you are not out of licens... |
Problem Statement: When trying to extract data from a bin file, and when it asked Use the default filename <.......> for .clc file? [Y] and answer is Yes, it gives the error TST: Cannot open (.......cle) for reading. | Solution: If the name of the .CLE is different from the .BIN file or the .CLE is not located in the folder where the .BIN file is located, then you get the above mentioned error.The .CLE file must be in the folder together with the .BIN file, otherwise extract cannot associate the DCS tags to the tag names we will see ... |
Problem Statement: Understanding the structure of a SmartAudit CFG file | Solution: The initial parts of the structure of a group configuration file obtained from SmartAudit are self-explanatory. The following information are provided in the initial portion in the order they have been defined below-
1. Number of CVs and MVs
2. List/Name of all MVs
3. List/Name of all CVs
4. S... |
Problem Statement: What is the latest version of SQL server supported with Aspen Basic Engineering V7.1? | Solution: SQL Server 2005 SP2 is supported for Aspen Basic Engineering V7.1
Keywords: SQL server, SQL, installation, install, ABE, zyqad, server, database
References: None |
Problem Statement: I have a class store from someone, how do I set it up so I can use it? | Solution: It all depends on what you are trying to do. You can use either of 2 ways:
If you want to use the class store, azcs file, (as-is) in a new workspace, you need to
1. Create a new folder in the ..\AspenZyqadServer\AspenZyqad13.1\WorkspaceLibraries\DataModel folder and save your datamodel files in the folder.
... |
Problem Statement: What is DLSTCHK?
User entry DLSTCHKis defined in the current CCF.A But, what is it? Do we have to migrate this entry into upgraded CCF? | Solution: DLSTCHK is an entry to work around a bug of LSTCHK function which is at Ver. 6.0.1 ER4.
DLSTCHK disables the LSTCHK functionality.
The LSTCHK bug was fixed at Ver. 2006.5 and this entry does not have to be migrated to ver. 2006.5 or later
Also referenceSolution 118857 - CQ00244045 DMCplus Onlines MV tracking ... |
Problem Statement: The attribute :fittings doesn''t exist in the Aspen Zyqad 10.3 prototype store | Solution: In versions of Aspen Zyqad prior to 10.3, 9 base classes were defined in the source code. These included basic-frame, object, connection, document, etc For these classes, a few attributes were also defined in the source code. One of these attributes was on the object class and was called :fittings, which coul... |
Problem Statement: How to rename a workspace? | Solution: The procedure to change the name of workspace is:
Make sure that no user is connected to the Zyqad server.
Rename the directory with workspace data with the new Workspace name, usually it is at C:\AspenZyqadServer\AspenZyqad **.*(version specific)\Workspaces
Open the file D:\AspenZyqadServer\AspenZyqad\Worksp... |
Problem Statement: When a terminator object is inserted on top of a PipingSystem, the Zyqad server will create a new PipingSystem after the object. This document explains how to specify that a class of object is a Piping System terminator. | Solution: The PipingSystem terminator status is determined by a method named IsPipingSystemTerminator. If this method returns True as value, the class will be a PipingSystem terminator. If the method returns False, the class will not be a PipingSystem terminator. The principle of Class inheritance apply to this method.... |
Problem Statement: How does one move a Zyqad server to a different location? | Solution: 1. Manually cut or copy the AspenZyqadServer folder and paste it at the location you want.
2. Open the 'Broker.ini' file, which by default is located in the folder indicated below:
...Program Files\AspenTech\Aspen Zyqad 200X.X\DataServices\bin
3. Modify the WorkspaceFolder and LibrariesFolder location in Brok... |
Problem Statement: TCP/IP MultiNet Service | Solution: A Cim-IO service is created by executing the following steps:
Get in the MULTINET configuration utility:
$MULTINET CONFIGURE / SERVERS
Add the new service:
SERVER-CONFIG>ADD servicename
Disable the new service:
SERVER-CONFIG> DISABLE servicename
Exit from the utility:
SERVER-CONFIG> EXIT
Add the new service a... |
Problem Statement: Low re | Solution: in the DCS can cause MV moves to be lost. Control may be extremely sluggish.
Solution
MVTOL sets a tolerance beyond the MV hi and lo limits (ULINDM & LLINDM). Suppose that the MV hi oper limit is 5.00 and the controller has moved the setpoint to that limit. Numerical round-off due to PCS reSolution may cause ... |
Problem Statement: Why the user created equipment Labels are not getting copied to MS word or other office products? | Solution: If the custom Label is associated with any equipment then Glue to Target option must be checked (in graphic definer) to enable the copy command to copy them with the equipment to any MS office products.
Keywords: Copy Label, Glue to Target.
References: None |
Problem Statement: If multiple instances of Aspen DMCplus are installed on a machine does he also need multiple dongles? | Solution: The dongles are tied to the license keys. If the license key is good for a variety of versions, then the key and the associated dongle will work for multiple versions. If you are mixing versions from different keys, and the keys have dongles associated with them, then the dongles will need to stay with the ke... |
Problem Statement: Is it possible to compare the model curves/matrices present in separate DMCplus controller model (.mdl) files, dynamically? If yes, how might one accomplish this? | Solution: Yes, it is possible to compare the model matrices present in separate model (.mdl) files. This can be done using the DMCplus Model software interface. If you only want to compare two model matrices, you can create a new dpp project file using DMCplus Model and import the mdl files for both of the old and new ... |
Problem Statement: When I enter data in a data sheet defined to include data from multiple cases, I get error message as below:
Why? | Solution: The reason for this error message is that the case of the field is not specified.
When a data sheet is defined to show data from more than one database case (called a multiple case data sheet), you must specify the case of the field before you can enter any data into a field.
On multiple case data sheets, gro... |
Problem Statement: How do I change the reporting date format in a PFD? | Solution: This workaround allows you to change the date the PFD as you want:
1. Open the ‘Explorer’ and add the PFD to a folder.
2. Then, right-click on the PFD object and select attributes.
3. Select from the upper menu Options | Show Associations.
4. Expand the attribute Data Views.
5. Under t... |
Problem Statement: New functionality available with Zyqad 11.1 Service Pack 1 allows the user to interactively add labels to PFD diagrams via the knowledge base rules. | Solution: This is enabled using three different lisp functions; one for each of the three different types of labels(object, connection and diagram).
Connection labels are a special case. If you define a label with the ''glue to target'' parameter set, the label requires the attach-index and attach-parameter attributes ... |
Problem Statement: How does one use CopyField and PasteField to speed up Datasheet Definition? When Copy and Paste field is used between two data sheets, it gives an error message Unspecified Error with no detail information. | Solution: Copy and Paste field works within the same data sheet, but not between two data sheets. There are two work arounds, however:Solution 1
If you have two data sheets, first one named 'CustomPumpDatasheet' and another 'AZPumpDatasheet'. You want to copy some of the attribute from 'AZPumpDatasheet-->Page1' to 'Cus... |
Problem Statement: When I try to create project in explorer, I get the error message cannot create project while clones exists. clones are not currently supported in project Why? How do I get rid of this error message? | Solution: This is a limitation when creating a project. If you have cloned objects in the database, then you cannot create project in Explorer | project management window. If you want to create a project, then you have to remove these cloned objects from the work space.
To get rid of this error message:
-remove all of ... |
Problem Statement: CM50S CIM-IO 3.2.x: What to do if the slaves won't start. | Solution: SYMPTOM:
A show sys/proc=ci* shows that the CIOCM50DLGP, CIOCM50RSLV, CIOCM50READn, and CIOCM50WRITn processes are running, but the slave processes (e.g. CIOCM50READnS01) are not running.
Here is an example of a working system:
$ sho sys/proc=ci*
OpenVMS V6.2 on node NEPTUN
11-MAR
1998 15:46:44.50 Uptime
7
... |
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