Siemens S7-400PLC Specifiche Pagina 57

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Integrating FB20 in the PLC program
01.00|FB20|en
57
Digital inputs/outputs at the module
Some drive modules have digital I/O on the electronic board which
can be controlled via the FB20.
The FB20 prepares the signals of the module accordingly, so that a
0/False signal corresponding to 0 volt is present at the input or
output, or if there is a voltage of 24 V at the 1/True signal.
Fig. 73
The outputs located on the board can be controlled via these four
input signals (bii_do_01_anst, bii_do_02_anst, bii_do_03_anst,
bii_do_04_anst) on the FB20.
4.8
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