Mendon Systems

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About Mendon Systems

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    Mendonsy
  • Birthday 08/16/43

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  • Gender Male
  • Location Mendon, NY
  • Country United States
  1. CP1L PLC to GOT2103

    The "D" and "DM" addresses should be interchangeable. If you enter a register as "D0" in the PLC then it should be "DM0" in the HMI.
  2. How to write and save a variable to the PLC (FB)

    You could either make your 'ZeroO2' into a data entry variable instead of a constant or  you could create another rung similar to rung #3 which would move the correct value into the 'O2Time' register. Of course you will need some way to enter the desired value such as a touchscreen.
  3. How can I monitoring connection between CJ2M and PC

    I have used a similar setup to monitor communications to two remote sites using an encrypted ethernet tunnel. The main PLC periodically sets a bit in the two remote PLC's. The remote PLC's turn their bit off after 5 seconds. If the bits do not toggle a communication error is logged.
  4. CJ2M Function Block String to Real

    The FVAL(449) instruction should do wat you are looking for.
  5. Barcode string parsing

    The basics are: 1) Use the FIND$(660) command to return the position of the first comma in the string in hex 2) Use the LEFT$(652) command to extract the characters to the left of the comma to another string You will probably want to subtract 1 from the hex value returned by the FIND$ command so that you don't get the trailing comma when you use the LEFT$ command. You may also want to use the DEL$ command to clean up the data left in the receive buffer.
  6. ZCP Instruction

    Try using the mnemonic  P_EQ which CXP interprets as the Equals Flag.
  7. CJ1W-AD041-V1 - Damaging Channels

    I suspect that the signal coming from that transducer is not DC but is an AC signal and that the high voltage peaks on the signal are destroying the AD041 module input channels.
  8. IP/ Subnets and communication between subnets

    Your problem is the subnet mask. With a mask of 255.255.255.0 PLC1 can only talk to other devices in the 10.125.34 subnet. If you set the mask to 255.255.0.0 like the other two PLC's it will work. You really should do a little research into how subnet masks work. subnet tutorial
  9. Moving values to memory

    Take a look at the BSET(071) instruction. It should do what you want.
  10. PLC's.net down?

    It appears that they are having the same problem again today. I am unable to access the site.
  11. PLC's.net down?

    It's working now. Apparently they went down around 3:00 AM and came back up around 2:45 PM.
  12. New content Icon???

    It is working OK again.
  13. New content Icon???

    The exact same issue is back again after being gone for over a year.
  14. CP1E Allocation I/O

    That depends on which model of the CP1E you have.
  15. HR AND W

    "H" bits retain their state when the cpu is stopped or powered off. "W" bits are reset to OFF when the cpu is stopped or powered off.