model string | protocol_family string | default_baud float64 | frame_len_bytes int64 | distance_bytes int64 | unit string | raw_scale float64 | out_of_range_raw float64 | min_range_m float64 | max_range_m float64 | capabilities string | frequency_base_hz float64 | notes string |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
LR1000E2 | A | 115,200 | 8 | 2 | m | 10 | null | 4 | 1,000 | angle;continuous;ld_always_on;self_test;set_baud;single;stop | null | Angle measurement (0x8A) is 'Effective only for modules equipped with an angle sensor' -- source row 21. |
LR1000E4 | A | 115,200 | 8 | 2 | m | 10 | null | 4 | 1,000 | angle;continuous;ld_always_on;self_test;set_baud;single;stop | null | Angle measurement (0x8A) is 'Effective only for modules equipped with an angle sensor' -- source row 21. |
LR1200E2 | A | 115,200 | 8 | 2 | m | 10 | null | 4 | 1,200 | angle;continuous;ld_always_on;self_test;set_baud;single;stop | null | Angle measurement (0x8A) is 'Effective only for modules equipped with an angle sensor' -- source row 21. |
LR1200E4 | A | 115,200 | 8 | 2 | m | 10 | null | 4 | 1,200 | angle;continuous;ld_always_on;self_test;set_baud;single;stop | null | Angle measurement (0x8A) is 'Effective only for modules equipped with an angle sensor' -- source row 21. |
LR1500E2 | A | 115,200 | 8 | 2 | m | 10 | null | 4 | 1,500 | angle;continuous;ld_always_on;self_test;set_baud;single;stop | null | Angle measurement (0x8A) is 'Effective only for modules equipped with an angle sensor' -- source row 21. |
LR1500E4 | A | 115,200 | 8 | 2 | m | 10 | null | 4 | 1,500 | angle;continuous;ld_always_on;self_test;set_baud;single;stop | null | Angle measurement (0x8A) is 'Effective only for modules equipped with an angle sensor' -- source row 21. |
LR2000E2 | A | 115,200 | 8 | 2 | m | 10 | null | 4 | 2,000 | angle;continuous;ld_always_on;self_test;set_baud;single;stop | null | Angle measurement (0x8A) is 'Effective only for modules equipped with an angle sensor' -- source row 21. |
LR2000E4 | A | 115,200 | 8 | 2 | m | 10 | null | 4 | 2,000 | angle;continuous;ld_always_on;self_test;set_baud;single;stop | null | Angle measurement (0x8A) is 'Effective only for modules equipped with an angle sensor' -- source row 21. |
LRF1200A1 | A | 115,200 | 8 | 2 | m | 10 | null | 5 | 1,200 | angle;continuous;external_circuit;self_test;set_baud;single;stop | null | Angle measurement (0x8A) is 'Effective only for modules equipped with an angle sensor' -- source row 21. | PROTOCOL HOLD Continuous ranging remains an engineering-confirmation item because the source request and reply function bytes differ. (Request 55 AA 89 FF FF FF FF 85; recorded reply 55 AA 88 STA FF DIS_H DIS_L ... |
LRF3000A1 | A | 115,200 | 8 | 2 | m | 10 | null | 1 | 3,000 | angle;continuous;external_circuit;self_test;set_baud;single;stop | null | Angle measurement (0x8A) is 'Effective only for modules equipped with an angle sensor' -- source row 21. | PROTOCOL HOLD Continuous ranging remains an engineering-confirmation item because the source request and reply function bytes differ. (Request 55 AA 89 FF FF FF FF 85; recorded reply 55 AA 88 STA FF DIS_H DIS_L ... |
SPD1200N0 | A | 115,200 | 8 | 2 | m | 10 | null | 0.2 | 1,200 | angle;continuous;ld_always_on;self_test;set_baud;single;stop | null | The SPD1200N transcription states that request and reply checksum scopes differ but does not print the transmit formula. This driver uses the family-A transmit formula, which reproduces every example frame the manual does print (55 AA 88 FF FF FF FF 84 / 89 ... 85 / 8E ... 8A / 8A ... 86). See docs/protocol-A-55AA.md... |
SPD1200N2 | A | 115,200 | 8 | 2 | m | 10 | null | 0.2 | 1,200 | angle;continuous;ld_always_on;self_test;set_baud;single;stop | null | The SPD1200N transcription states that request and reply checksum scopes differ but does not print the transmit formula. This driver uses the family-A transmit formula, which reproduces every example frame the manual does print (55 AA 88 FF FF FF FF 84 / 89 ... 85 / 8E ... 8A / 8A ... 86). See docs/protocol-A-55AA.md... |
SPD1200N4 | A | 115,200 | 8 | 2 | m | 10 | null | 0.2 | 1,200 | angle;continuous;ld_always_on;self_test;set_baud;single;stop | null | The SPD1200N transcription states that request and reply checksum scopes differ but does not print the transmit formula. This driver uses the family-A transmit formula, which reproduces every example frame the manual does print (55 AA 88 FF FF FF FF 84 / 89 ... 85 / 8E ... 8A / 8A ... 86). See docs/protocol-A-55AA.md... |
SPD1200D03 | A | null | 8 | 2 | null | null | null | 0.2 | 1,200 | continuous;self_test;set_baud;single;stop | null | BAUD CONFLICT (the manual contradicts itself; reported verbatim, not resolved): 'The PDF protocol section states 115200 bps as default, while the technical table states 15200 bps (factory) / 9600 bps.' and 'Do not select a host baud rate until the delivered unit configuration is confirmed.' This driver therefore refus... |
LRF50H | B | 460,800 | 4 | 2 | cm | 1 | 65,535 | 0.05 | 50 | read_frequency;read_serial;read_version;set_baud;set_frequency;start_stop | 1,000,000 | null |
LRF100H | B | 460,800 | 4 | 2 | cm | 1 | 65,535 | 0.05 | 100 | read_frequency;read_serial;read_version;set_baud;set_frequency | 1,000,000 | null |
LRF200H | B | 460,800 | 4 | 2 | cm | 1 | 65,535 | 0.05 | 200 | read_frequency;read_serial;read_version;set_baud;set_frequency | 1,000,000 | null |
LRF300H | B | 460,800 | 4 | 2 | cm | 1 | 65,535 | 0.05 | 300 | read_serial;read_version;set_baud | null | The manual gives no output-frequency divisor formula for this model, so set/read frequency is not exposed. |
LRF600H | B | 460,800 | 4 | 2 | cm | 1 | 65,535 | 0.05 | 600 | read_serial;read_version;set_baud | null | The manual gives no output-frequency divisor formula for this model, so set/read frequency is not exposed. |
LRF1500H | B | 460,800 | 5 | 3 | cm | 1 | 16,777,215 | 0.05 | 1,500 | read_serial;read_version;set_baud | null | Our engineering notes record baud='60' for this model. That is an extraction artefact from the baud-rate code table ('60 00 | 96 | 9600'); the manual prose states 460800 (adjustable), which is what this driver uses. | MANUAL DISCREPANCY (reported, not resolved): the printed example frame '5C 02 11 03 EC' does not sati... |
LRF22VB | B | 460,800 | 4 | 2 | mm | 1 | 20,000 | 0.05 | 20 | read_frequency;read_serial;read_version;set_baud;set_frequency;start_stop;switch_to_iic | 10,000 | Supported output frequencies per the manual: 200/100/50/20/10/1 Hz. |
LRF50VB | B | 460,800 | 4 | 2 | mm | 1 | 50,000 | 0.05 | 50 | read_frequency;read_serial;read_version;set_baud;set_frequency;start_stop;switch_to_iic | 10,000 | Our engineering notes list out_of_range as unresolved for this model; the manual prose does state 'When out of range, output would be 50000', which is what this driver uses. | MANUAL DISCREPANCY (reported, not resolved): the printed 'Reading serial no.' request '5A 0D 02 0D 0D 0D 0D BC' does not satisfy the manual's ow... |
LRF10VB | B | 460,800 | 4 | 2 | mm | 1 | 65,535 | 0.05 | 9 | start_stop | null | Source: LRF10VB Specification V3.0, section 6 'Communication Protocol: UART' and 6.3 'UART Commands'. | Only Start/Stop ranging are driven. MANUAL DISCREPANCY (reported, not resolved): row 1 'Modify Baud Rate' prints the frames '5A 0D 02 0D 0D 0D 0D BC' / '5A 8D 02 10 01 00 00 5F', which are the LRF50VB 'Reading seria... |
ERDI laser rangefinder UART protocol facts (per model)
One row per ERDI 905 nm laser rangefinder module (23 models): protocol family, default baud rate, frame length, bytes of distance, the unit of one raw count, scale, out-of-range marker, documented range, and supported commands. Every value is transcribed from that model's own manufacturer manual; where the manual is silent the field is empty and the gap is written in notes. Nothing is extrapolated from a sibling model.
Why it exists: the catalogue is not uniform. The VB series reports millimetres, the H series centimetres and the A-family 8-byte frames metres x 10; reading the wrong unit is a 10x error. 5C 02 11 EC is 43.54 m on an H-series module and 4.354 m on a VB-series module.
Files
models.csv/models.json- the table (same rows)protocol-A-55AA.md- 8-byte55 AAcommand/response family, with the manual sentence behind every rowprotocol-B-5C.md- free-running5Cdata frames and5Acommand frames
Use it with the open drivers (ErdiTech/erdi-lrf-drivers, pip install erdi-lrf) or to write your own decoder (live decoder: lrf-uart-protocol-decoder).
from datasets import load_dataset
ds = load_dataset("erdilrf/erdi-lrf-uart-protocols", split="train")
print(ds[0])
Disclosure: published by ERDI TECH LTD (Chengdu, China), the manufacturer of these modules. Specifications and purchasing: erdilrf.com/models. Contact: tommy@erdimail.com.
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