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BMS communication protocol (continued)
Remote
configuration
register (read and
write)
Function 1, 2:
read n bits
Remote alarm
and operating status
(read-only)
Remote control
Remote diagnostics
Function 8
Event counters
Function 11
Registers 550 and 551:
A191: Hysteresis, stage 5, coil 2, circuit 2
Registers 552 and 553:
A192: Setpoint difference, stage 6, coil 2, circuit 2
Registers 554 and 555:
A193: Hysteresis, stage 6, coil 2, circuit 2
Register 560:
A199: Outdoor temperature for start of spraying
Registers 561 and 562:
A200: Spray difference, coil 1, circuit 1
Registers 563 and 564:
A201: Spray difference, coil 1, circuit 2
Registers 565 and 566:
A202: Spray difference, coil 2, circuit 1
Registers 567 and 568:
A203: Spray difference, coil 2, circuit 2
Register 569:
A113: Spray type (0: water optimisation,
1: electricity optimisation)
(1 = Fault)
Bit 1:
Fan fault, stage 1, line 1
Bit 2:
Fan fault, stage 2, line 1
Bit 3:
Fan fault, stage 3, line 1
Bit 4:
Fan fault, stage 4, line 1
Bit 5:
Fan fault, stage 5, line 1
Bit 6:
Fan fault, stage 6, line 1
Bit 7:
Fan fault, stage 1, line 2
Bit 8:
Fan fault, stage 2, line 2
Bit 9:
Fan fault, stage 3, line 2
Bit 10:
Fan fault, stage 4, line 2
Bit 11:
Fan fault, stage 5, line 2
Bit 12:
Fan fault, stage 6, line 2
Bit 13:
Temperature or pressure sensor fault, coil 1, circuit 1
Bit 14:
Temperature or pressure sensor fault, coil 1, circuit 2
Bit 15:
Temperature or pressure sensor fault, coil 2, circuit 1
Bit 16:
Temperature or pressure sensor fault, coil 2, circuit 2
Bit 17:
On/off (1 = on => on and CA closed)
Bit 18:
Spray status 1 = on
Bit 19
:
Free cooling status 1 = on
Bits 20 to 30:
Reserved
Read and write
Bit 31:
On/Off (0 = off; 1 = on)
Bit 32:
Setpoint 1/setpoint 2 control (0 = Setpoint 1; 1 = Setpoint 2)
Read-only
Subfunction 0A:
Reset counters (No response)
Subfunction 0B:
Frame received without CRC errors
Subfunction 0C:
Frame received with CRC errors
Subfunction 0D:
Number of exception responses
Subfunction 0E:
Non-broadcast
frame
Subfunction 0F:
Broadcast request received
Subfunction 10:
Not
used
Subfunction 12:
Unprocessed
character
Read-only
