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Appendices
CM-2201/CM-2202
Appendix E
Modbus Address List
©2018 Nelson Heat Tracing Systems
www.nelsonheaters.com
GA2497 Rev.6
26
D.1 Module Setup Group (Read/Write)
Modbus
Data
Length
Variable Name
Description/Value
Range
Register
Address
Bytes
40001
0
2 Maintain Temp in °F
= x per 1°F (-58 to +932)
= 32766 if Set to None
= 32767 if Set to Off
40002
1
2
Maintain Temp in °C
= x per 1°C (-50 to +500)
= 32766 if Set to None
= 32767 if Set to Off
40003
2
2 Low Temp Alarm in °F
= x per 1°F (-58 to +932)
= 32767 if Set to Off
40004
3
2
Low Temp Alarm in °C
= x per 1°C (-50 to +500)
= 32767 if Set to Off
40005
4
2
High Temp Alarm in °F
= x per 1°F (-58 to +932)
= 32767 if Set to Off
40006
5
2
High Temp Alarm in °C
= x per 1°C (-50 to +500)
= 32767 if Set to Off
40007
6
2
Deadband in °F
= x per 1°F (1 to 10)
40008
7
2
Deadband in °C
= x per 1°C (1 to 5)
40009
8
2
Low Current Alarm
= x per 0.1A (1 to 300)
= 32767 if Set to Off
40010
9
2
High Current Alarm
= x per 0.1A (1 to 300)
= 32767 if Set to Off
40011
10
2
Ground Fault Alarm
= x per 1mA (10 to 500)
= 32767 if Set to Off
40012
11
2
Ground Fault Trip
= x per 1mA (10 to 500)
= 32767 if Set to Off
40013
12
2
Low Voltage Alarm
= x per 1V (85 to 280)
= 32767 if Set to Off
40014
13
2
High Voltage Alarm
= x per 1V (85 to 280)
= 32767 if Set to Off
40015
14
2 Power Limit
= x per 10% (1 to 10)
= 32767 if Set to Off
40016
15
2
Soft-Start
= x per 1 Second (10 to 999)
= 32767 if Set to Off
40017
16
2 Auto Test Cycle
= x per 1 Hour (1 to 720)
= 32767 if Set to Off
40018
17
2 Display Time
= x per 1 Second (5 to 600)
= 32767 if Set to Off