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hamfam

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Posts posted by hamfam

  1. Help me guys please

     

    I have two control loops PID P1 and P2

    P1 is working fine and it has logic to store 0 to  "control value"  without compiler faults

    P2 is working fine but it wont allow store 0 to  "control value"  , system  responds  compiler "tag is read only"

    Now i am thinking that P2 is wrong so i create a P3 and its the same P2 but it wont allow store 0 to  "control value"  , system  responds  compiler "tag is read only"

    when i duplicate P1 to  P11 ,  the P11 acts the same as P1 and it compiles ok and store 0 to "control value"  without compiler faults

     

    Now i am sure the logic should not allow me to store 0 to "control value" and the compiler  is right but why does it work fine on P1 but it wont work on P2

    image.thumb.png.bb0ab796b9f539ce1d57057e0951594a.png

  2. 1, How can I restrict access to the Disable button on the alarm status viewer  - I do not want operators to disable alarms permanently

    2, How can the duration minutes (on the alarm status viewer) have the maximum 12 hours instead of 43,200 minutes - I want the operators to able to shelve a alarm for the maximum shift (12 hours)(ie nuisance alarms) but I want to them to respond if the alarm is 12 hours old

     

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