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Found 27 results

  1. S7 200 Fatal Error

    Hi guys, I have an S7 200 CPU 212 PLC and it is in system fault condition. I am using MicroWin V4.0 and I am connecting via 6ES7 901-3DB30-0XA0 USB PPI cable. I have followed the steps in the help file to find the fault code but cant seem to find how to rectify it. The code displayed in the fatal errors section is: '5 Permanent Memory error on user program' I was hoping that I could upload the program to my laptop, clear the PLC memory, then download the program back to the PLC. This does not seem to be possible and I am now stuck with a PLC in fault. I do not have a backup copy of the program so if I clear the memory I will be stuck. Any advice greatly appreciated
  2. Hello all, I'm quiet new to control and logic systems, I'm still learning. I have to develop a circuit/logic for an application. I was wondering if Micro 810 can be used for this & the objectives of the application are: 1. whenever Signal A(0-24V) is high for the first time in the cycle and Signal B(0-24V) goes high then the solenoid X(24V) should be ON. 2.when signal B is low then the solenoid X should be OFF. 3. If in an instance signals A and B are opposite to each other for more than 2 seconds then a signal should be sent to E-stop. If not Micro 810, what are the other products that are suitable for such application? I know this can be done by normal relay board and some timers; I want to use a controller for this if its cheaper in price. Regards, _SKR