Siemens S5-135U/155U appendix and 310 Interface Modules, EU Interface Module EU Type

Interface Modules

7.2The 301 and 310 Interface Modules

The IM 301 is used to connect I/O modules and signal preprocessing modules (IPs) to a CC in a distributed arrangement (allowing for possible configurations) via an

SEU 183U

SEU 185U (only input/output modules) expansion unit.

You can connect up to four EUs to a CC in distributed arrangement via the

IM 301. If you use the 721 connecting cable, the total cable length from the

CCto the last EU may be up to 200 m. The distributed connection is made via the lower front connector of the module. Use the IM 310 interface module in the EU to be connected in a distributed arrangement:

EU Interface Module

IM 301

EU Type

EU 183U,

EU 185U (only I/O modules)

CC Interface Module

IM 310

Apart from the distributed EUs, you can connect the following expansion units in a centralized arrangement:

SEU 183U

SEU 184U

SEU 187U

The centralized connection is made via the upper front connector of the module. Use the following interface modules, according to the EU to be connected in a centralized arrangement:

EU Interface Module

IM 301-5

IM 301-3

EU Type

EU 184U, EU 187U

EU 183U

CC Interface Module

IM 312-5

IM 312-3

Unused centralized connections of the IM 301-3 and unused distributed connections of the IM 301-3 and IM 301-5 must be terminated with terminators. The same applies to the last IM 310.

You may only set module addresses in the EU which you are not yet using in the CC. This applies to the normal (P) and extended (O) areas.

System Manual	7-9
C79000-G8576-C199-06