Hello all. I have a numeric entry field on a KTP600 basic screen connected to a S71212 plc. When configured for input/output, it shows ### and when configured for input only, it will display the entered value on the screen but not in the plc.
First thing was to check for comms activity so I put a single "lamp" on the screen and allocated it to a cycling timer in the plc. That works.
Next try was a pair of buttons configured as "set bit" allocated to a self-holding rung's start/stop bits. Nothing doing.
So, two more indicators connected to M bits and toggle the bits: no change. But re-address one of them to the Q bit of a timer in the program and it works.
Only difference that I can see is that the first indicator that works is referenced to a physical output in the default tags table whereas all the others are in other tag tables that I have created (apart from the timer bit). I'm definitely picking them from the plc list in the popup and access & visibility in the hmi is checked.
What's going on here then?
Just added a numeric field to display a timer's ET. That works too.
But a M bit in the default tag table doesn't (set bit on press or invert bit).
First thing was to check for comms activity so I put a single "lamp" on the screen and allocated it to a cycling timer in the plc. That works.
Next try was a pair of buttons configured as "set bit" allocated to a self-holding rung's start/stop bits. Nothing doing.
So, two more indicators connected to M bits and toggle the bits: no change. But re-address one of them to the Q bit of a timer in the program and it works.
Only difference that I can see is that the first indicator that works is referenced to a physical output in the default tags table whereas all the others are in other tag tables that I have created (apart from the timer bit). I'm definitely picking them from the plc list in the popup and access & visibility in the hmi is checked.
What's going on here then?
Just added a numeric field to display a timer's ET. That works too.
But a M bit in the default tag table doesn't (set bit on press or invert bit).
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