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Appendix D: Modbus Holding Registers
Chillgard 5000
US
17 Appendix D: Modbus Holding Registers
17.1 Chillgard 5000 - Modbus RTU (Holding Registers)
Section Register Name Channel # Index Property Notes
General
Product ID
General
40001 Read "CG"
Firmware Version 1 40002 Read Major(MSB:1b)/Minor(1b)
Firmware Version 2 40003 Read Build(2b)
Reserved 4 40004 Read 0
Reserved 5 40005 Read 0
Reserved 6 40006 Read 0
Unit Status 40007 Read
Refer to Section 17.3, "Unit Status
Flags"
ACK button 40008 Write ACK by writing 1 to it
RESET button 40009 Write
Refer to Section 17.2, "RESET
Button Actions"
Channels
1Gas Number
Channel 1
40010 Read Refer to Section 17.5, "Gas Types"
1 Gas Conc. 40011 Read ppm
1 Status 40012 Read
Refer to Section 17.4, "Channel
Status Flags"
1 Reserved 40013 Read 0
2Gas Number
Channel 2
40014 Read Refer to Section 17.5, "Gas Types"
2 Gas Conc. 40015 Read ppm
2 Status 40016 Read
Refer to Section 17.4, "Channel
Status Flags"
2 Reserved 40017 Read 0
3Gas Number
Channel 3
40018 Read Refer to Section 17.5, "Gas Types"
3 Gas Conc. 40019 Read ppm
3 Status 40020 Read
Refer to Section 17.4, "Channel
Status Flags"
3 Reserved 40021 Read 0
4Gas Number
Channel 4
40022 Read Refer to Section 17.5, "Gas Types"
4 Gas Conc. 40023 Read ppm
4 Status 40024 Read
Refer to Section 17.4, "Channel
Status Flags"
4 Reserved 40025 Read 0
5Gas Number
Channel 5
40026 Read Refer to Section 17.5, "Gas Types"
5 Gas Conc. 40027 Read ppm
5 Status 40028 Read
Refer to Section17.4, "Channel
Status Flags"
5 Reserved 40029 Read 0
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