Table of Contents
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Contents
Preface ........................................................................................................................................................................... iii
Safety warnings ........................................................................................................................................................... iii
Disclaimer .................................................................................................................................................................... iv
Amendment Register ..................................................................................................................................................... v
Firmware revision history ............................................................................................................................................. vi
1.
Safety precautions ................................................................................................................................................ 8
2.
Overview ................................................................................................................................................................ 9
3.
DIP switch settings ............................................................................................................................................. 10
3.1.
RS-485 Node address .................................................................................................................................. 10
3.2.
RS-485 communication settings ................................................................................................................... 10
3.3.
Protocol selection ......................................................................................................................................... 11
3.4.
Deadband mode ........................................................................................................................................... 11
4.
Deadband Mode .................................................................................................................................................. 12
4.1.
Settings ........................................................................................................................................................ 12
4.2.
Operation ..................................................................................................................................................... 12
4.3.
Initialisation .................................................................................................................................................. 13
5.
Setpoint Offset .................................................................................................................................................... 14
5.1.
Settings ........................................................................................................................................................ 14
5.2.
Operation ..................................................................................................................................................... 14
6.
RS-485 termination ............................................................................................................................................. 16
7.
Installation ........................................................................................................................................................... 17
7.1.
Physical connection ...................................................................................................................................... 17
7.2.
Power supply ................................................................................................................................................ 17
7.3.
Modbus connections .................................................................................................................................... 17
7.4.
Unit type selection ........................................................................................................................................ 17
7.5.
Using Twin/Triple/Quad systems .................................................................................................................. 18
7.5.1.
When fault Modbus register is being used ............................................................................................ 18
7.5.2.
When fault Modbus register is not being used ...................................................................................... 18
7.6.
Using single split units in a group ................................................................................................................. 19
7.6.1.
When fault Modbus register is being used ............................................................................................ 19
7.6.2.
When fault Modbus register is not being used ...................................................................................... 19
7.7.
Using MXZ split units .................................................................................................................................... 20
8.
Status LEDs ........................................................................................................................................................ 21
8.1.
AC ACK ........................................................................................................................................................ 21
8.2.
RS-485 ACK ................................................................................................................................................. 21
9.
BACnet ................................................................................................................................................................ 22
9.1.
BACnet MS/TP ............................................................................................................................................. 22
9.2.
BTL Listing ................................................................................................................................................... 22
9.3.
Object types supported ................................................................................................................................ 23
9.4.
Object list ..................................................................................................................................................... 24
10.
Modbus connection ............................................................................................................................................ 25
10.1.
Modbus background ..................................................................................................................................... 25
10.2.
Modbus registers .......................................................................................................................................... 25
10.3.
Modbus connections .................................................................................................................................... 25
11.
Modbus tables - Air-To-Air systems ................................................................................................................. 27
11.1.
Holding registers .......................................................................................................................................... 27
11.2.
Input registers ............................................................................................................................................... 29
11.3.
Discrete Inputs ............................................................................................................................................. 30
11.4.
Coils ............................................................................................................................................................. 30
12.
Modbus tables - Air-To-Water systems ............................................................................................................ 31
12.1.
Holding registers .......................................................................................................................................... 31
12.2.
Input registers ............................................................................................................................................... 55
12.3.
Coils ............................................................................................................................................................. 69
12.4.
Discrete Inputs ............................................................................................................................................. 70
13.
Modbus tables - Lossnay systems ................................................................................................................... 75
13.1.
Holding registers .......................................................................................................................................... 75
13.1.
Input registers ............................................................................................................................................... 82
13.1.
Coils ............................................................................................................................................................. 85
13.1.
Discrete Inputs ............................................................................................................................................. 85
Appendix A - Compatible Air-To-Air units ................................................................................................................. 88
Appendix B - Compatible Air-To-Water units ............................................................................................................ 90
Appendix C - Compatible Lossnay units ................................................................................................................... 91
7
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