Siemens Simatic S7-400 - Page 393

5V
24 V
A2
B2
A2'
B2'
A1
B1
A1'
B1'
L+ (24 V)
M
A1
B1
5 V
M5 V
L+ (24 V)
M
PE
M 5.2
Logic
5V
24 V
1M
1M
-+ + - -
OFF
ON
OFF
+
ON
Segment 1 Segment 2
PG/OP-
socket
Figure 10-3 Block diagram of the RS 485 repeater
RS 485 repeater
10.5 Specifications
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 393