Interface Modules
6-4
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Rules for Connection
When you connect a central rack to expansion racks, you must observe the
following rules:
•
You can connect up to 21 ERs of the S7-400 to one CR.
•
The ERs are assigned numbers to identify them. The rack number must be set
on the coding switch of the receive IM. Any rack number between 1 and 21 may
be assigned. Numbers must not be duplicated.
•
You may insert up to six send IMs in one CR. However, only two send IMs with
5 V transfer are allowed in one CR.
•
Each chain connected to the interface of a send IM can comprise up to four ERs
(without 5 V transfer) or one ER (with 5 V transfer).
•
The exchange of data via the communication bus is limited to 7 racks, meaning
the CR and ER numbers 1 to 6.
•
The maximum (total) cable lengths specified for the type of connection must not
be exceeded.
Connection type
Maximum (total) line
length
Local connection with 5 V transfer via IM 460-1 and IM 461-1
1.5 m
Local connection without 5 V transfer via IM 460-0 and IM 461-0
3 m
Remote connection via IM 460-3 and IM 461-3
102.25 m
Remote connection via IM 460-4 and IM 461-4
605 m
Terminator
The bus must be terminated in the last EU of a line. To do this, plug in the
appropriate terminator in the lower front connector of the receive IM in the last EU
of the line. Unused front connectors in a send IM do not have to be terminated. The
IM 461-1 with the order number 6ES7 461-1BA01-0AA0 does not require a
terminator.
Table 6-2
Terminators for the Receive IMs
Receive IM
Terminator
IM 461-0
6ES7461-0AA00-7AA0
IM 461-1
6ES7461-1BA00-7AA0
IM 461-3
6ES7461-3AA00-7AA0
IM 461-4
6ES7461-4AA00-7AA0
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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