Siemens LOGO!, Manual

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Technical specifications
8.5 Interface description
Basic Panels
Operating Instructions, 04/2012, A5E02421799-03
141
8.5 Interface description
8.5.1 Power supply
Plug connector, 2-pin
Pin number Assignment
1 +24 VDC (L+)
2 GND 24 V (M)
8.5.2 PROFIBUS (Sub-D RS422/485)
Name of interface on HMI device: X2
Sub-D socket, 9-pin, with screw lock
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
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– NC