Operating instructions

Technical specifications
12.4 Description of the ports
MP 377, MP 377 PRO (WinCC flexible)
Operating Instructions, 10/2008, 6AV6691-1DR01-0AB0
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12.4 Description of the ports
12.4.1 Power supply
Plug connector, 2-pin
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Pin Assignment
1 +24 VDC (L+)
2 GND 24 V (M)
12.4.2 X10/IF 1B (RS 422/RS 485)
Sub-D socket, 9-pin, with screw lock
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Pin Assignment for the RS 422 Assignment for the RS 485
1 n. c. n. c.
2 GND 24 V GND 24 V
3 TxD+ Data channel B (+)
4 RD+ RTS
1)
5 GND 5 V, floating GND 5 V, floating
6 +5 VDC, floating +5 VDC, floating
7 +24 VDC, out (max. 100 mA) +24 VDC, out (max. 100 mA)
8 TxD– Data channel A (–)
9 RxD– RTS
1)
1)
On pin 4 or pin 9, can be set with DIP switch on the rear of the device