Appendices
CM-2201/CM-2202
Appendix E
Modbus Address List
©2018 Nelson Heat Tracing Systems
www.nelsonheaters.com
GA2497 Rev.6
32
40109-40110
108 – 109
4 Alarm Stack 20
40111-40112
110 - 111
4 Log Stack 1
0 = No Alarm
40113-40114
112 – 113
4 Log Stack 2
1 = Low Temp Alarm
40115-40116
114 – 115
4 Log Stack 3
2 = High Temp Alarm
40117-40118
116 – 117
4 Log Stack 4
4 = Low Current Alarm
40119-40120
118 – 119
4 Log Stack 5
8 = High Current Alarm
40121-40122
120 – 121
4 Log Stack 6
16 = GF Alarm
40123-40124
122 – 123
4 Log Stack 7
32 = GF Trip
40125-40126
124 – 125
4 Log Stack 8
64 = Low Voltage Alarm
40127-40128
126 – 127
4 Log Stack 9
128 = High Voltage Alarm
40129-40130
128 – 129
4 Log Stack 10
256 = Auto Test Alarm
40131-40132
130 – 131
4 Log Stack 11
512 = Continuity Failure
Alarm
40133-40134
132 – 133
4 Log Stack 12
1024 = SSR Failed Shorted
Alarm
40135-40136
134 – 135
4 Log Stack 13
2048 = RTD-A Fail Alarm
40137-40138
136 – 137
4 Log Stack 14
4096 = Reserved
40139-40140
138 – 139
4 Log Stack 15
8192 = RTD-B Fail Alarm
40141-40142
140 – 141
4 Log Stack 16
16384 = Reserved
40143-40144
142 – 143
4 Log Stack 17
32768 = Self Check Failure
40145-40146
144 – 145
4 Log Stack 18
65536 = GFI test failure
40147-40148
146 – 147
4 Log Stack 19
40149-40150
148 – 149
4
Log Stack 20
40227
226
2
System Temp in °F
= x per °F
(ch2)
= 32765 if RTD Fail
= 32763 if Undetected *
40228
227
2
System Temp in °C
= x per °C
(ch2)
= 32765 if RTD Fail
= 32763 if Undetected *
40229
228
2
RTD-A Temp in °F
= x per °F
(ch2)
= 32765 if RTD Fail
= 32763 if Undetected *
40230
229
2
RTD-A Temp in °C
= x per °C
(ch2)
= 32765 if RTD Fail
= 32763 if Undetected *
40231
230
2
RTD-B Temp in °F
= x per °F
(ch2)
= 32765 if RTD Fail
= 32763 if Undetected *
40232
231
2 RTD-B Temp in °C
= x per °C
