RS 485 Repeater
10-5
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Terminal Connection Diagram
In the case of a repeater configuration with ungrounded reference potential
(ungrounded operation), any interference currents and static charges are
discharged by means of an RC network integrated in the repeater (refer to
Figure 10-1) to the protective conductor.
24 VDC
L+ M PE
M 5.2
A1
B1
A1
B1
M
22 nF
10 M
Ω
Ground bus
PE
Figure 10-1
RC Network with 10 M
Ω
for Configuration with Ungrounded Reference Potential
Isolation Between Bus Segments
Bus segment 1 and bus segment 2 are galvanically isolated from each other. The
PG/OP interface is connected internally to the port for bus segment 1. Figure 10-2
shows the front panel of the RS 485 repeater.
24 VDC
L+
M PE M 5.2
SIEMENS
RS 485-REPEATER
ON
A1
B1
A1
B1
A2
B2 A2
B2
PG
OP
DP2
OFF
ON
DP1
Terminals for bus segment 1
Terminals for bus segment 2
PG/OP
interface
Isolation
Figure 10-2
Isolation Between the Bus Segments
Содержание Simatic M7-400
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Страница 428: ...RS 485 Repeater 10 8 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
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Страница 574: ...Parameter Sets for Signal Modules A 12 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 594: ...Diagnostic Data of the Signal Modules B 20 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 598: ...Spare Parts and Accessories C 4 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
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