robl
Member
I use the omron NT20S touch screen to control a system that must "open" and "close". At each end there is a feedback to an input from the PLC (omron cqm1h-cpu52).
On the NT20S I programmed two buttons: "open" and "close". I used the alternate function.
If a press "open" the bit HR30.02 is set. If the feedback is high (open switch reached) then I reset (in the PLC programm) the bit HR30.00. Then I can see in the NT20S that the bit is reset (feedback light goes off).
And now the problem: I can't use the "close" button until I press the "open" buton once. So I think that the NT20S still remembers that I pressed this buton and not press it again to reset it because the reset is done by the PLC.
Does anyone have a solution for this problem?
On the NT20S I programmed two buttons: "open" and "close". I used the alternate function.
If a press "open" the bit HR30.02 is set. If the feedback is high (open switch reached) then I reset (in the PLC programm) the bit HR30.00. Then I can see in the NT20S that the bit is reset (feedback light goes off).
And now the problem: I can't use the "close" button until I press the "open" buton once. So I think that the NT20S still remembers that I pressed this buton and not press it again to reset it because the reset is done by the PLC.
Does anyone have a solution for this problem?