Siemens S5-135U/155U appendix and 314 Interface Modules, Line Length, EU 183U EU 185U ER 701-2 ER

Interface Modules

7.3The 304 and 314 Interface Modules

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

	S	EU 185U
	S	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
	S	EU 183U
	S	ER 701-2
	expansion units.
Line Length	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 183U EU 185U ER 701-2 ER 701-3

EU Interface Module

IM 304

CC Interface Module

IM 314

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.

System Manual	7-13
C79000-G8576-C199-06