Product Overview
1.5 The FM 450-1 software
Counter module FM 450-1
Manual, 02/2014, A5E03648739-02
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Software for the S7-400-CPU
The software for the CPU consists of the FC CNT_CTRL function, which is invoked in the
CPU user program. This FC enables communication between the CPU and the FM 450-1. In
addition, there is also the FC DIAG_INF for the FM 450-1 with which you can transmit
diagnostic data into the DB of FC CNT_CTRL.
This figure shows an S7-400 layout with an FM 450-1 and several signal modules.
Figure 1-3 Layout of a SIMATIC S7-400 with an FM 450-1
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