RS 485 Repeater

10-7

S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Block Diagram of the RS 485 Repeater

Bus segment 1 and bus segment 2 are galvanically isolated from each other.

Bus segment 2 and the PG/OP socket are galvanically isolated from each other.

Signals are amplified

between bus segment 1 and bus segment 2

between PG/OP socket and bus segment 2

5V
24V
Segment 2
A2
B2
A2
B2
Segment 1
A1
B1
A1
B1
PG/OP-
socket
L+ (24 V)
M
A1
B1
5 V
M5 V
L+ (24 V)
M
PE
M 5.2
Logic
5V
24V
1M1M
Figure 10-3 Block Diagram of the RS 485 Repeater