Siemens S7-400PLC Spezifikationen PDF herunterladen (Seite 60)

Integrating FB20 in the PLC program

60 01.00|FB20|en

• bii_1_frg = Enable

In the case of a 0/False signal, an emergency stop is performed,

which results in a malfunction and must be acknowledged.

• bii_1_reset = Reset

When changing from 0/False to 1/True, the malfunction is ac-

knowledged/reset, which stops the drive.

Malfunctions can only be acknowledged if they have previously

been resolved.

• bii_1_bwg_pf = Movement via P flank

In the case of a 1/True signal, only one movement is executed

in the case of a positive edge (signal change from 0 to 1), at the

corresponding movement functions (e.g. tapping). This is to en-

sure that after the drive has been stopped, it can only be acti-

vated as soon as a positive edge (change from 0 to 1 signal) is

detected. Thus, an independent start-up can be prevented (e.g.

when tapping.

• bii_mot_strom_nenn = Nominal motor current

The engine current can be limited via the rei_sw_i value. In the

case of a 1/True signal at the input, the engine is set to its no-

minal power value, irrespective of the set target value.

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Siemens S7-400PLC Spezifikationen Seite 60