Specifications

IP 240 Position Decoding
Interrupt service routine FB 27 and FB 28
no
yes
no
no
no
yes
FB 27
no
Read interrupt req.
(FB 170 FCT 3)
Interrupt from
channel 1?
Interrupt
triggered by
wirebreak?
Backward
traverse program
active?
Set bit for wirebreak
switch off heating,
reset FW 14
Set F ”INT POINT”,
reset FW 14
yes
no
Interrupt by
REF 8?
yes
Forward
traverse program
active?
yes
Interrupt
enabled by REF 1
and zone 2?
FB 28
Enter speed for zone 2
into FW 14
yes
Interrupt
enabled by REF 7
and zone 8?
Enter speed for zone 8
into FW 14
yes
Interrupt
by REF 8?
Set F ”FIN POINT”,
switch off heating,
reset FW 14
End
yes
EWA 4NEB 811 6120-02a 7-41