qayyum faiz
Member
i am facing a strange issue at a site where CPU 315 is linked to the SCADA and from SCADA we are controlling various process basically its a gypsum plant and from there we start and stop various areas of the plant for instance we have grinding area and there are start and stop buttons given at the SCADA.
now sometimes the start button is locked means we press it from the SCADA but it does not starts the process and meanwhile the stop command is active actually we change the color of the buttons to show that the button has been pressed the the sequence has started or is going to stop so the stop button is green and flashing telling that the process is stopping while the process is stopped it should go away and in this way it doesn't allows us to start the sequence again.
before i go further just need to update that the work memory of the CPU has reached 99%
4 times this fault has appeared in various areas of the plant and what we did was go online the PLC delete all the blocks and download all the blocks from the recent backup and restart the PLC and after that it became ok.
now is it the issue of the CPU should i replace it with the a one having higher work memory or should i troubleshoot my logic or the SCADA bits because i have already done that and there is noting un usual that i can see there...
please help and suggest what shoudl be done...
now sometimes the start button is locked means we press it from the SCADA but it does not starts the process and meanwhile the stop command is active actually we change the color of the buttons to show that the button has been pressed the the sequence has started or is going to stop so the stop button is green and flashing telling that the process is stopping while the process is stopped it should go away and in this way it doesn't allows us to start the sequence again.
before i go further just need to update that the work memory of the CPU has reached 99%
4 times this fault has appeared in various areas of the plant and what we did was go online the PLC delete all the blocks and download all the blocks from the recent backup and restart the PLC and after that it became ok.
now is it the issue of the CPU should i replace it with the a one having higher work memory or should i troubleshoot my logic or the SCADA bits because i have already done that and there is noting un usual that i can see there...
please help and suggest what shoudl be done...