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.
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.
The optionally implementable communications expansion EXM 448-2 supports high-speed communication of the FM 458-1 DP-basic module with drives on the basis of the SIMOLINK protocol.
| Mfr. Part No. | Description |
| 6DD1607-0EA2 | SIMATIC S7-400, COMUNICATION EXPANSION MODULE EXM 448-2 WITH 2 SIMOLINK INTERFACES |
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