RS 485 Repeater
10-4
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
10.3
RS 485 Repeater in Ungrounded and Grounded
Operation
Grounded or Ungrounded
The RS 485 repeater is ...
•
grounded, if all other nodes in the segment are also operated with a grounded
potential
•
ungrounded, if all other nodes in the segment are operated with an ungrounded
potential
Note
The bus segment 1 is grounded if you connect a programming device to the
PG/OP socket of the RS 485 repeater. Ground connection is effected since the
MPI in the programming device is grounded and the PG/OP socket is connected
internally with bus segment 1 in the RS 485 repeater.
Grounded Operation of the RS 485 Repeater
For grounded operation of the RS 485 repeater, you must jump terminals “M” and
“PE” on the top of the RS 485 repeater.
Ungrounded Operation of the RS 485 Repeater
For ungrounded operation of the RS 485 repeater, “M” and “PE” on the top of the
RS 485 repeater must not be interconnected. In addition, the supply voltage of the
RS 485 repeater must be ungrounded.
Содержание Simatic M7-400
Страница 10: ...Preface x S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 122: ...Power Supply Modules 3 42 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 362: ...Analog Modules 5 146 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 384: ...Interface Modules 6 22 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 428: ...RS 485 Repeater 10 8 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 496: ...M7 400 Expansions 12 26 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 562: ...Interface Submodules 13 66 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
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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