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Position Decoding
Control and output program FB 26
Begin
FB 26
EMERG STOP"
pressed?
yes
Set Q
"STOPPED"
Switch off heating,
Set Q "RET INTPNT",
Reset Q "ENABLED",
Reset Q "RUNNING",
Reset all auxiliary flags,
Reset FW 14
Match FW 14 to
analog output's
format and output
End
7-40
no
Error bit
set?
(FY 11)
yes
Set Q "FAULT",
save FY 11 in FY 10 and delete
FY 11.
Does FW 14
indicate forward
yes
direction?
no
Limit switch
Switch on Q
"STOPPED" flashing
Switch off heating
"LMTSW FORW"
yes
no
"LMTSW BACK"
Does FW 14
yes
indicate backward
no
pressed?
yes
Reset Q
"EMERG STOP"
pressed?
no
no
pressed?
yes
direction?
no
EWA 4NEB 811 6120-02a
IP 240
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