Description Of The Interfaces; Dc24V X80; Rs422/485 X20 - Siemens SIMATIC HMI Unified Comfort MTP700 Operating Instructions Manual
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8.9 Description of the interfaces
8.9
Description of the interfaces
8.9.1
DC24V X80
Power supply 24 V DC 2-pin
Pin
1
2
8.9.2
RS422/485 X20
Serial interface, 9-pin sub-D socket, female
Pin
1
2
3
4
5
6
7
8
9
160
Meaning
+24 V DC
Ground
Assignment for the RS422
NC
NC
TxD+
RxD+
GND 5 V, floating
+5 VDC, floating
NC
TxD–
RxD–
Assignment for the RS485
NC
NC
Data signal B (+)
RTS
GND 5 V, floating
+5 VDC, floating
NC
Data signal A (–)
NC
Unified Comfort Panels
Operating Instructions, 03/2020, A5E46641217-AA
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