Mode of operation

Coupling to FM 458-1 DP

The EXM 448-2 is connected directly to the FM 458-1 DP basic module via the internal bus. Only the power supply is provided via the backplane bus of the SIMATIC rack, there is no data transfer. Access to the I/O is via configurable function blocks.

Configuration

Configuration instead of programming with CFC

The FM 458-1 DP is configured using the well-known software tools STEP 7 and CFC (Continuous Function Chart), which are also used to program the SIMATIC S7-400.

CFC is an intuitive Windows-based program that is easy to learn. The CFC has been expanded to include the function blocks and the optimized operating system using the D7-SYS add-on software package.

Data is exchanged with the connected drives via the SIMOLINK function blocks contained in the D7-SYS.

For further information on D7-SYS, refer to "SIMATIC Software/Engineering Tools".