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N.B.
the "alarms activated" variable returns a WORD variable (16 bits) where each single bit indicates the existence or otherwise
of an alarm, in the following sequence:
BIT
DESCRIPTION OF ERROR
0
inside air temperature sensor
1
outside air temperature sensor
2
-
3
return air temperature sensor
4
-
5
-
6
pre-heater
7
outside air temperature high
8
inside air temperature high
9
filters
10
-
11
-
12
-
13
-
14
-
15
-
N.B.
The modbus - RTU instructions accepted by the controller of the appliance, which is configured as a slave, are:
3 - Read holding registers
16 - Write multiple registers (maximum 10 consecutive variables)
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