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CM-2201/CM-2202
Appendices
Modbus Address List
Appendix E
©2018 Nelson Heat Tracing Systems
www.nelsonheaters.com
GA2497 Rev.6
27
40019
18
2 Cost per kwh
= x per $0.01 (1 to 100)
40020
19
2 Reserved
40021
20
2 Reserved
40022
21
2 Reserved
40023
22
2 Alarm Test
= x per 1 Hour (1 to 24)
= 32764 if Set to Disable
=32765 if Set to Continuously
40024
23
2 Heater Test
= x per 1 Hour (1 to 24)
= 32764 if Set to Disable
=32765 if Set to Continuously
40025
24
2 Reserved
40026-40033
25 - 32
16 Heater Name
16-Character limit (CM-2201)
12-character limit (CM-2202).
See Appendix E for ASCII
chart
40034-40042
33 - 41
16 Reserved
40043
42
2
bits
Variable name
0
GF Test CH.1
00 = Auto Test Cycle
01 = Now
10 = Disable
1
2
Reserved
3
Alarm Contact CH.1
0 = Normally Open
1 = Normally Closed
4
Enable Heater CH.2
0 = No
1 = Yes
5
External Disable CH.2
0 = Disable
1 = Enable
6
Control Type (CH.2)
0 = On/Off
1 = Proportional
7
RTD Operation (CH.2)
000 = Single RTD Mode
001 = Backup
010 = Average
011 = Lowest
100 = Highest
101 = High Temp Cut-out
8
9
10
RTD Failure Mode (CH.2)
0 = Off
1 = On
11
GF Test (CH.2)
00 = Auto Test Cycle
01 = Now
10 = Disable
12
13
Heater Type (CH.2)
0 = Fixed Resistance
1 = Self Regulating
14
Alarm Contact (CH.2)
0 = Normally Open
1 = Normally Closed
15
Reserved