Input Registers - Procon MelcoBEMS MINI Installation Manual

11.6.

Input registers

Input Registers are read using function code 04.
Register Name
Fault/Error Code (hex)
A1M Firmware Version
Modbus Comms Counter
Fault Code (decimal)
System Type Detected
Own Refrigerant Address
Defrost
Residual Heat Removal
Refrigerant Error Info
7-Segment Display Error Code
Digit 1
7-Segment Display Error Code
Digit 2
Status Of Heating
Heat Pump Frequency – Master
Heat Pump Frequency – Slave 1
Heat Pump Frequency – Slave 2
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Input Register (Analogue Input)
Modicon
Addr
Address
0x8000 = No error
0x6999 = Bad communication with unit
1 30002
(Refer to indoor unit documentation for description
of other fault code values)
3 30004 A1M Firmware Version
Value of a counter which increments upon every
valid Modbus command received. Value will
5 30006
automatically reset to zero when value exceeds
65535.
8000 = No error
6999 = Bad communication between A1M and unit
8 30009
(Refer to unit documentation for description of other
fault code values)
0 = A1M has detected an ATA unit connected
9 30010
1 = A1M has detected an ATW system connected
25 30026 0 ... 32
0 = Normal
1 = Standby
26 30027
2 = Defrost
3 = Waiting Restart
0 = Normal
27 30028 1 = Prepared
2 = Residual Heat Removal
0 = Normal
1 = Error (System)
28 30029
2 = Error (Startup)
3 = Maintenance Error
29 30030 (see note ^)
30 30031 (see note ^^)
0 = No type
1 = Heating C1
2 = Heating C2
3 = Heating C3
0 = No type
31 30032 1 = Heating/Cooling A1, Heating/Cooling B1,
Heating/Cooling C1
2 = Heating/Cooling A2, Heating/Cooling B2,
Heating/Cooling C2
3 = Heating/Cooling A3, Heating/Cooling B3,
Heating/Cooling C3
Frequency value in Hz
32 30033
0 = 0Hz ... 255 = 255Hz
Frequency value in Hz
33 30034
0 = 0Hz ... 255 = 255Hz
Frequency value in Hz
34 30035
0 = 0Hz ... 255 = 255Hz
Details
Applicable Unit Type
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