7
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
To Next Page
Loading...
