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Posts posted by RussB

  1. Iwo

    Did you read the manuals that I linked you to in the other forum? They have all the details for the 90-30 side. You can find them here:
    If you need more information search with more relevant terms.

    Also as indicated you will have better results by updating your software to Proficy Machine Edition and hardware to the latest available firmware level. For this contact your GE PLC supplier.

    The 90-30 also uses Hexadecimal, Signed Integer Decimal or binary in either 16 bit (INT) or 32 bit (DINT or REAL) data types.

  2. Connect the pins above -- of your other device.
    RxD -- TxD
    TxD -- RxD
    GND -- Signal Ground
    DTR -- DSR
    Ignore all others, in most cases.
    Or optionally jumper DTR to DSR on each end.

    If we knew exactly which port the other end was going to connect to someone may be more specific.

  3. I suggest that you start here and assign the youths to evaluate a couple and if they do not have electrical symbol libraries verify that symbol libraries are easily imported or developed and make the first project in learning the software developing a few electrical symbols.

    This would be a good choice as most of what is learned here can be transitioned to AutoCAD later.



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  4. If you had put your time into researching a good replacement for your Series 6 PLC  back in September when you started this it would likely be in place and running now. The GE RX3i would be my recommendation to look into and hire GE Service to assist you with the conversion to get the GE support needed.

    Using the serial interface into the Series 6 is your best and maybe only way of using a generic computer other than the Workmaster. IIRC one reason is the software does not support a Hard Drive bigger than 32 Meg. although one can format a primary partition on some larger drives.

    Have you looked for a Workmaster compatible hard drive, eBay may surprise you?

  5. I get accused of being simplistic rather often.

    ~ Instead of making a multi branched complex rung make 3 or more straight forward simple rungs. Modern PLC/PAC's do not lack discretes to use as internal coils.

    ~ Whenever possible scale analogs in the hardware instead of in logic.

    ~ Use INTEGER instead of REAL when a REAL makes no sense such as raw values from an encoder or other counter.

    ~ Keep any and all HMI controlled variables properly labeled so future troubleshooters know where to look for them.

    ~ If the Programming software allows, let it assign Addresses and you program all variables with Clear & Concise Names. This too helps future changes to the logic made by others.

    ~ Document all code

    ~ Document all Variables

    ~ Document everything, include internet links when available. Hopefully they will not change in the near future, even when they do at least you tried.

    ~ Most important is to HAVE FUN doing this.


  6. Not just cost. A managed switch will insure that any Ethernet device on a particular machine or 'Line' will never get interference from un-authorized network devices or errant internet connections.

    The alternative is to put only select devices on the un-managed switch with a Router to the outside world for data collection and maintenance.

  7. Most any good accounting packages, including Quicken can do this but as indicated by kaiser_will you will need cooperation between purchasing and receiving to get everything in the correct account. If done properly even Quicken will give you all the reports needed at the touch of a button or two.


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  8. In the CPU331 the "Fault Table" is in protected memory controlled by the Operating System of the CPU. One can 'read' this "Fault Table" with Proficy Machine Edition software. 

    Some of the faults can be read by the logic and stored to %R registers, but that needs to be programmed in via Logic and 'Service Request 15' (SVC_REQ 15).