All interfaces have the following common features:
Compact configuration: The rugged plastics housing contains the interfaces for the connecting cables.
Simple mounting: The interface modules are mounted on the DIN rail (slot 3) and connected to the I/O modules via a bus connector just like any other module.
Problem-free configuration: The interface modules are self-configuring. Address assignment is not required.
Status and fault LEDs
IM 365
The IM 365 is the low-cost expansion for an ER. It contains the following features:
One of the two IM 365 modules is inserted in the CC, the other into the ER. The modules are connected by a fixed cable 1 m in length.
Limited use of modules: The ER is not connected to the C bus (communication bus). Therefore, no C bus nodes (e.g., CPs and FMs, see configuring aids) may be inserted into the ER.
No separate power supply: The modules in the ER are powered by the CPU power supply.
IM 360/IM 361
IM 360 and IM 361 are the ideal solution for comprehensive expansions. They contain the following features:
IM 360 plugs into CC
IM 361 plugs into each ER
Separate power supply Each IM 361 requires an external 24 V DC power supply. This then powers all modules of the respective ER. A PS 307 load power supply can be connected using a power connector.
No module selection restrictions: All S7-300 modules can be used in the ER.
