Interrupt Service Routine Fb 27 And Fb 28 - Siemens Simatic S5 IP 240 Manual

IP 240

Interrupt service routine FB 27 and FB 28

FB 27
Read interrupt req.
(FB 170 FCT 3)
Interrupt from
channel 1?
no
End
EWA 4NEB 811 6120-02a
FB 28
yes
Interrupt
triggered by
wirebreak?
Backward
traverse program
active?
Forward
traverse program
active?
Interrupt
enabled by REF 1
and zone 2?
Interrupt
enabled by REF 7
and zone 8?
Interrupt
by REF 8?
yes
Set bit for wirebreak
switch off heating,
reset FW 14
yes
Interrupt by
no
REF 8?
yes
no
yes
Enter speed for zone 2
into FW 14
no
yes
Enter speed for zone 8
into FW 14
yes
Set F "FIN POINT",
switch off heating,
reset FW 14
no
Position Decoding
yes
Set F "INT POINT",
no
reset FW 14
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