6 Configuration
Installation manual
29
EKMBPP1
Modbus adapter
4P720139-1B – 2023.09
Input register Address Name Range Description
I0024 30025 Filter Alarm 0~1
▪
0: No alarm
▪
1: At least one unit with filter
alarm
I0025 30026 Return Air Min °C × 100 Minimum of all unit return air
temperatures
I0026 30027 Return Air Max °C × 100 Maximum of all unit return air
temperatures
I0030 30031 Thermo On 0~3 Summary of unit operation:
(a)
▪
0: Idle/Fan
▪
1: Heating
▪
2: Cooling
▪
3: Heating and cooling
I0035 30036 Defrost 0~1
▪
0: No defrost
▪
1: At least 1 unit in defrost
(b)
(a)
When there is a mix of units in Idle/Fan and Heating operation mode,
the register will read 1 (Heating). When there is a mix of units in Idle/
Fan and Cooling operation mode, the register will read 2 (Cooling).
(b)
Indicates an indoor unit in pressure equalisation, Hot start/Pre-heat, or
an outdoor unit in Defrost operation.
6.5.3 Unit readback
Unit data is available for each of the indoor units connected to the P1P2
network. The first two digits of the unit input register indicate the indoor
unit number ((0~15)+1=1~16). The unit number (+1) is multiplied by
100, and an offset is added to the number to indicate a specific feature.
Input register
Name Range Notes
Unit 1 … Unit 16
I0120 … I1620 Unit exists 0~1
▪
0: No unit found
▪
1: Unit found
I0121 … I1621 Is Error 0~1
▪
0: No unit error
▪
1: Unit in error
I0122 … I1622 Error code 0~65535
▪
255: No error
▪
Other values: error
code
I0123 … I1623 Return Air Temperature °C × 100 Unit return air sensor
value
I0124 … I1624 Filter Alarm 0~1
▪
0: No alarm
▪
1: Filter alarm
I0130 … I1630 Thermo On 0~2
▪
0: Idle/Fan
▪
1: Heating
▪
2: Cooling
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