The 304 And 314 Interface Modules - Siemens S5-155U System Manual

7.3

The 304 and 314 Interface Modules

Line length
System Manual
C79000-B8576-C199-03
The IM 304 and IM 314 are used to connect I/O modules, signal
preprocessing modules (IPs) and communication processors (CPs) to a
CC in a distributed arrangement via the
• • EU 185U
• • ER 701-3
expansion units.
You can also use the IM 304 and IM 314 to connect I/O modules to a
CC in a distributed arrangement via the
• • EU 183U
• • ER 701-2
expansion units.
You can connect up to two-times four EUs in a distributed
arrangement via one IM 304. If you utilize the 721 connecting cable,
the total line length from the CC to the last EU may be 600 m per run.
You can connect additional EUs in a centralized arrangement to the
distributed EUs.
You can insert up to four IM 304s in one CC.
The IM 304 EU interface module is complemented by the IM 314 CC
interface module. In fault-tolerant systems, you must use the IM 314R
CC interface module together with the IM 304 (refer to the S5-155H
manual).
EU Type EU Interface Module
EU 183U IM 304
EU 185U
ER 701-2
ER 701-3
You may only set module addresses in the EU which you do not use
in the CC. This also applies when the EU is addressed in the extended
(O) area, IM3 area or IM4 area.

The 304 and 314 Interface Modules

CC Interface Module
IM 314
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