
S7-400 Automation System Module Data
Reference Manual, Edition 09/2009, A5E00850736-06
343
Interface modules
6
6.1 Common features of the interface modules
Function
Interface modules (a send IM and a receive IM) are required if one or more expansion racks
(ER) are to be connected to a central rack (CR). This configuration is described in the
Installation manual
.
Configuration
Interface modules must always be used together. The send modules (send IMs) are inserted
in the CR, whilst the corresponding receive modules (receive IMs) are plugged into the
series-connected ER.
Table 6- 1 Interface modules of the S7-400
Partner Areas of application
IM 460-0
IM 461-0
Send IM for local link without PS transfer; with communication bus
Receive IM for local link without PS transfer; with communication bus
IM 460-1
IM 461-1
Send IM for local link with PS transfer; without communication bus
Receive IM for local link with PS transfer; without communication bus
IM 460-3
IM 461-3
Send IM for remote link up to 102.25 m; with communication bus
Receive IM for remote link up to 102.25 m; with communication bus
IM 460-4
IM 461-4
Send IM for remote link up to 605 m; without communication bus
Receive IM for remote link up to 605 m; without communication bus
Overview of the connections
Note the rules for connections in the section after next.
Table 6- 2 Overview of the connections
Local connection Remote connection
Send IM 460-0 460-1 460-3 460-4
Receive IM 461-0 461-1 461-3 461-4
Max. number of connectable EMs per line 4 1 4 4
Max. distance 5 m 1.5 m 102.25 m 605 m
V transfer No Yes No No
Max. current transfer per interface - 5 A - -
Communication bus transmission Yes No Yes No
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