IEM supports the three following architectures at the same time:

Peer-to-peer communication between ACM/CCM and S7?41x controllers

The IEM implements a communications interface between the APACS+/QUADLOG systems on the MBUS and SIMATIC PCS 7 AS controllers on the SIMATIC PCS 7 plant bus Industrial Ethernet. One IEM supports up to 8 communication links with SIMATIC PCS 7 AS.

Peer-to-peer communication between ACM/CCM controllers on different MBUS segments

The IEM implements a communications interface between APACS+/QUADLOG controllers that are installed on different MBUS segments. This enables existing MNET installations to be replaced. One IEM can communicate with up to 12 different MBUS segments. The communication blocks supplied support the forwarding of the following APACS+ data types between the controllers:

• REAL
• BOOLEAN
• WORD
• STRING

Conversion from MBUS to Ethernet communication for APACS+/QUADLOG systems

In existing plants, the IEM can replace an RNI (rack-mounted network interface) or the MBUS/MNET communication links between APACS+/QUADLOG controllers and PCS 7/APACS+ OS operator stations. When standard cables are used (MBI Cable Kit A/B), the length of a bus segment, and therefore the maximum distance between APACS+/QUADLOG MODULRAC and IEM, is limited to 18 m. The optional MBUS extension cables can be used to install the IEM at a distance of up to 168 m from the APACS+/QUADLOG MODULRAC.