Dantherm CDF 40 Manuel D'entretien page 45

RS-485 Interface
RS-485 Interface implements Modbus RTU protocol as slave device. Device doesn't have address .
Settings: 115200, N, 8, 1. and accepts requests to any address.
Code Functions
0x06 preset single register
0x10 preset multiple registers
0x03 read holding registers
Database
Register Byte
parameter
Comp_
2
state
2
3 Fan_state
4 Sole_state
3
5 ExFan_state
6 Heat1_state
4
7 Heat2_state
Alarm1_
8
state
5
Alarm2_
9
state
Evap_
temp1
10
(decimal)
6
Evap_
11 temp1
(fraction)
De-
Min Max Description
fault
Compressor state:
0 1 0
0 - Compressor stopped 1 - Compressor works
FAN state:
0 1 0
0 - FAN stopped 1 - FAN works
Solenoid valve:
0 1 0 0
1
Exhaust FAN state:
0 1 0 0 - FAN stopped
1 - FAN works
Heater 1 state:
0 1 0 0 - Heater turned off
1 - Heater turned on
Heater 2 state:
0 1 0 0 - Heater turned off
1 - Heater turned on
Alarm 1 output:
0 1 0 0 - Alarm out turned off
1 - Alarm out turned on
Alarm 2 output:
0 1 0 0 - Alarm out turned off
1 - Alarm out turned on
Temperature from evaporator 1:
-40 100 0
decimal: may be used as integer value of
temperature
fraction: may be recalculated to value after
decimal point.
-40 100 0
To get whole value use the equation in float point
values "val = decimal + (fraction / 256)"
- closed
- open
EN
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