Specifications

Ammonia Gas Monitor – Multi Zone
Instruction 3015-5113 3
4–20 mAdc Interface Board ................................................................................................................... 44
Replacement Parts & Optional Accessories.............................................................................................. 44
Replacement Parts................................................................................................................................. 44
Item Description ..................................................................................................................................... 44
Part Number........................................................................................................................................... 44
Item Description ..................................................................................................................................... 44
Part Number........................................................................................................................................... 44
Surge Protectors: ................................................................................................................................... 44
Specifications............................................................................................................................................. 45
APPENDIX A................................................................................................................................................. 46
Recommended Alarm Settings & Gas Enumeration.............................................................................. 46
APPENDIX B................................................................................................................................................. 47
RS-485 Communication Protocol .............................................................................................................. 47
Overview ................................................................................................................................................ 47
MODBUS RTU Protocol......................................................................................................................... 47
AGM-MZ MODBUS RTU Operation .......................................................................................................... 48
Overview ................................................................................................................................................ 48
Protocol Details ...................................................................................................................................... 48
AGM-MZ Polling..................................................................................................................................... 48
Network Topologies................................................................................................................................ 48
Key Comm Protocol Parameters............................................................................................................ 49
Summary of Registers............................................................................................................................ 50
System Data Register ............................................................................................................................ 51
Status Register ..................................................................................................................................... 52
Fault Code Table.................................................................................................................................... 52
Zone Data .......................................................................................................................................... 53
Alarms & Alarm Acknowledge................................................................................................................ 53
Date Time Register ............................................................................................................................... 55
Sensor Data Register ............................................................................................................................ 55
Release Zone Hold Register .............................................................................................. 56
Hold Zone Register ............................................................................................................................... 56
AGM-MZ Hold Mode .............................................................................................................................. 56
Releasing the Zone hold: ....................................................................................................................... 56
Fault Log Register ................................................................................................................................ 57
Flow Log Register ................................................................................................................................57
Alarm Log Register ............................................................................................................................... 57
Service Mode Register .......................................................................................................................... 57
Release Service Mode…….... .. ............................................................................................................ 58
AGM-MZ Service Mode.......................................................................................................................... 58
Releasing the unit from Service Mode: .................................................................................................. 58
PPM Register ....................................................................................................................................... 58
Zone Log Registers ............................................................................................................................... 58
MODBUS Exception Responses............................................................................................................ 59
APPENDIX C................................................................................................................................................. 60