[tkea]

Hello,
on machine LITZ TV700 we can't run any program or MDI command.
All movements works fine, zero return too. No any alarm.
What bits in diag screen i must see, what all conditions may cause this fault?
May i anything "switch out" from ladder diagram? This is only one thing, that i may kill, but not sure. Plc works.. But may help us when we reload PLC in boot menu?
Thank you vary much.

[drdos]

Check ladder and see if coil G7.2 goes on and off when you press the cycle start button. If it does then check coil G8.5, it has to be on.

[tkea]

Check ladder and see if coil G7.2 goes on and off when you press the cycle start button. If it does then check coil G8.5, it has to be on.

Thak you very much for reply,
G7.2 goes on, when key start is pressed. G8.5 is 1.

[tkea]

Hello,
on machine LITZ TV700 we can't run any program or MDI command.
All movements works fine, zero return too. No any alarm.
What bits in diag screen i must see, what all conditions may cause this fault?
May i anything "switch out" from ladder diagram? This is only one thing, that i may kill, but not sure. Plc works.. But may help us when we reload PLC in boot menu?
Thank you vary much.

SOLVED interlock was caused by bad switching on Operator Panel setting. Second choice (pro rest) was switched ON instead OFF.