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Appendix A - I/O Signal Descriptions
3A5186B
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Appendix A - I/O Signal Descriptions
This section provides details about the CGM automation input and output signals.
Heat Zone States
The signal is 0 on power up. The following values of this signal correspond to the various heat zone states. Each
zone is bit packed into 3 bits for each zone designation in input instances 29-31 and 60-62 of the map.
Status Indication Bit Tables
The following tables reflect bit-packed data, which corresponds to the status words located at input instances 65 and
66.
Status Word 1 Indication Bits
Number
Binary #
Heat Zone State
0
000
Zone Not Installed
1
001
OFF
2
010
Warm Up
3
011
Heat Soak State
4
100
At Temperature
5
101
Setback Mode
Bit
Number
Hex
Equivalent
Binary Number
Description
0
0x0001
0000 0000 0000 0001
System is ON
1
0x0002
0000 0000 0000 0010
Active System is Secondary (B) System
2
0x0004
0000 0000 0000 0100
Heat is Turned ON for Primary (A) System
3
0x0008
0000 0000 0000 1000
Heat is Turned ON for Secondary (B) System
4
0x0010
0000 0000 0001 0000
Setpoint Indications are for Secondary (B) System
5
0x0020
0000 0000 0010 0000
Setback Setpoint Indications are for Secondary (B) System
6
0x0040
0000 0000 0100 0000
Material Tracking is ON or Active
7
0x0080
0000 0000 1000 0000
Pump Priming is Active for Primary (A) System
8
0x0100
0000 0001 0000 0000
Pump Priming is Active for Secondary (B) System
9
0x0200
0000 0010 0000 0000
Pump is ON for Primary (A) System
10
0x0400
0000 0100 0000 0000
Pump is ON for Secondary (B) System
11
0x0800
0000 1000 0000 0000
Setback Mode is Active for Primary (A) System
12
0x1000
0001 0000 0000 0000
Setback Mode is Active for Secondary (B) System
13
0x2000
0010 0000 0000 0000
Data Exchange Interface is Active or in Transition
14-15
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Reserved for Future Use