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Components
RS232, 6 pin:
The RS232 data interface (SUB-D, male connector) is used for the communication between
the cooling module and an external monitoring module via the Modbus protocol. For
service purposes, the interface is used for the firmware update of the control system.
Pin
Name
2
TxD
3
RxD
4
GND
Interlock, DI/DO, 10 pin:
The Interlock-interface serves to connect the door contact switch and as an output for 4
freely programmable fault relays.
Pin
Name
1
TK.1
2
TK.2
3
Out1.1
4
Out1.2
5
Out2.1
6
Out2.2
7
Out3.1
8
Out3.2
9
Out4.1
10
Out4.2
VARISTAR Cooling unit SHX 30
29
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