Gas Detectors & Indoor Air Quality Monitors | CETCI
Instruction Manual for CET models including: CGAS-D Digital Gas Detectors, CGAS-D, Digital Gas Detectors, Gas Detectors, Detectors
Each device will have its own unique Modbus ID. NOTES: • CGAS-D and CGAS-DP can have up to 2 gas channels (or 1 gas and 1 particulate ...
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DocumentDocumentModbus® Holding Registers 2024 CET Digital Gas Detectors www.critical-environment.com Modbus® Holding Registers 2024.01 MODBUS® HOLDING REGISTERS The CGAS-D, CGAS-DP, LPT-M and LPT-P transmitters and the cGas-SC Self Contained Controller may be configured as part of a Modbus® RTU RS-485 network. In order for communication to be successful between devices, be sure your network connection is complete, the network termination switches are set appropriately and all the devices are configured with the same baud rate, character format, etc. Each device will have its own unique Modbus® ID. NOTES: · CGAS-D and CGAS-DP can have up to 2 gas channels (or 1 gas and 1 particulate channel) plus an RH channel and a Temperature channel · The cGas-SC can have up to 3 gas channel plus a horn, strobe, buzzer, RH and Temperature channel · The LPT-P does not support a relay. · LPT-P and LPT-M can have up to 3 gas channels. If you have specific requirements, have any questions or require clarification about these holding registers, please contact CET for assistance. Holding Registers From 1 to 50,320 Register 1 2 Description Internal Relay 1 output status (excluding LPT-P) Internal Relay 2 output status (cGas-SC only) Information 2 © 2024 All rights reserved. Data subject to change without notice. 2024.01 Modbus® Holding Registers 3 4 30,001 30,004 30,005 30,008 30,009 30,012 30,013 30,016 30,017 30,020 40,101 Strobe (cGas-SC only) Internal or External Buzzer (cGas-SC only) Channel 1 Reading present reading x scaler Channel 1 Alarm Status Channel 2 Reading present reading x scaler LEL, PPM, %VOL, g/m3 LEL, PPM, %VOL, g/m3 Channel 2 Alarm Status Channel 3 Reading present reading x scaler Channel 3 Alarm Status Channel 4 Reading present reading x scaler Channel 4 Alarm Status Channel 5 Reading present reading x scaler Channel 5 Alarm Status Number of Relays present (excluding LPT-P) LEL, PPM, %VOL, DegC, DegF, %RH LEL, PPM, %VOL, DegC, DegF, %RH LEL, PPM, %VOL, g/m3 © 2024 All rights reserved. Data subject to change without notice. 3 Modbus® Holding Registers 2024.01 40,103 41,013 to 41,028 41,035 to 41,042 41,045 Number of Channels present Model Name Serial Number Firmware Version 41,113 Modbus ID 41,114 45,002 45,003 Modbus Baud Rate Relay On Delay (excluding LPT-P) Relay Off Delay (excluding LPT-P) 32 bytes 16 bytes if changed by program, may require Reset if changed by program, may require Reset seconds seconds CHANGING ANY VALUES IN THE CHANNEL HOLDING REGISTERS WILL VOID ANY CALIBRATION OR LIABILITY FOR CORRECT OPERATION. THESE VALUES ARE FOR REFERENCE ONLY. 4 © 2024 All rights reserved. Data subject to change without notice. 2024.01 Modbus® Holding Registers Register 50,004 50,005 50,008 50,011 50,012 50,013 50,025 to 50,027 50,028 to 50,030 50,033 50,079 Description Sensor Scaler Decimal Place Sensor Range Low Alarm Set Point Mid Alarm Set Point High Alarm Set Point Information multiplier (1, 10, 100, 1000) decimals (0, 1, 2) with scaler factor with scaler factor with scaler factor with scaler factor Gas/Value Name Gas/Value Units Priority Membership eg. LEL, PPM, %VOL, DegC, DegF, %RH Channel 1 Warmup Timer Repeat 50,004 to 50,079 for each channel that is present. Each channel has an offset of 80 from the previous channel's equivalent register. © 2024 All rights reserved. Data subject to change without notice. 5 SAFER AIR EVERYWHERE. www.critical-enviroment.com Unit 145, 7391 Vantage Way, Delta, BC V4G 1M3 Canada Tel: +1.604.940.8741 Toll Free: +1.877.940.8741 © 2024 All rights reserved. Data subject to change without notice.