PLCMentor.com

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  1. WonderWare noob

    Evan - we have about 9 hours of wonderware training on our site that may be useful.  It was done in version 10, but most of the information still applies to later versions. 
  2. Compact Logix L24ER

    There is also a 7 day grace period when you install the software.  If this is a quick look and done, you can probably just use that if you have access to the software installation files.
  3. Allen bradley Class 3 MSG at 100%

    I would be interested in hearing a bit more on this when you swap some things around.  The class 3 msg has to do with HMIs, SCADA and other unscheduled communications including uploads/downloads.  It may be that swapping things around as pturmel mentions will clear things up.  One thing I saw with a quick google was people saying that firmware versions < 32 seemed to have issues with locking up class 3 comms.  I don't have any direct experience with this so just passing on what I've read.  Either way please update this thread when you have moved things around a bit. 
  4. Compact Logix run without I/O Cards

    I do this with pretty much every project I put together.  I have a simulation mode that my system can go into that runs the routing that sets all of my i/o to inhibit.  It also enables the JSR that runs the logic to simulate inputs, puts my scaling blocks into a simulation mode, etc.  Its really great for batching systems as you can make sure everything works well as the system sequences through the batching steps.
  5. Alternative Servo Drives

    Kollmorgen has an Ethernet I/P version of their drives that is fairly easy to connect to and their support is good.  Unfortunately you will probably have the same supply problems with their equipment as you are having right now. 
  6. Masked moved instruction

    Ok now that everyone gets how it works the original question was why would you use it. Generally I have used this instruction to sort out information from communication with a non AB device or a blob of data from some other device.  For instance if you have a DINT where not all of the bits are pertinent poop, you may mask out the unnecessary stuff to make it easy to do comparisons.  I use this in conjunction with some GSV statements that store certain data in 4 bit lumps.  I can mask out everything else and then do simple comparisons with the result.  I actually think I got this right out of the book for checking comm status on system modules.  Granted, in retrospect, I could have just done the comparisons using bits...  But mine goes to 11  (maybe someone will get that reference).
  7. HMI Design Software

    I'm surprised nobody has mentioned Redlion and Crimson software.  Of course the software is just for their hardware but the software is free so you can check out how it works before committing. 
  8. Replacement PanelView PV1000

    I'll put another vote for the RedLion HMI's. Simple to use and will connect to about anything.  I will say that they are hard to come by now with all of the Covid delays going on.
  9. DH+ network

    As Joe mentioned DH+ is pretty resilient to abuse.  If you are removing the last PLC in the line, you can still just unplug the PLC and leave the connector, term resistor and all until you can properly modify things.  Once you dont have to worry about things going down, you can remove the cable from the preceding device and place the termination resistor at that location.   Just as a side note, DH+ actually had a more complex installation method of station connectors and drops off of the trunk line and a very specific cable that needed to be used.  In actual practice people found that it was easily daisy chained without any problems to service.  Not having the right cable can be a problem in certain instances and not having the proper termination resistors can cause issues also, but usually people can do lots of stupid stuff and still have an operating network. 
  10. String clearing

    It seems that copying an empty string solves the problem and is simple.  Is there a problem with that method that would require any of the other methods discussed here?
  11. PLC Programming Language

    Gotta agree with the learning ladder.  That said, program to your audience.  If you have a staff of computer science experts then maybe structured text is the way to go.  Generally with PLC's you are going to be working with a maintenance staff with electrical knowledge and those guys are who ladder logic was developed to make things easier for.  As Bob said, you can do a lot of advanced programming with PLC's now days.  It's generally better to program things as simple as possible in order to make things easier for those with less programming capability than you have.  Also, at 2AM my brain doesn't operate well enough to remember what all that indirect addressing was doing!  So in reality you are programming simple for your brain at stupid hours when it needs things easy too.  In PLC's often simple, repetitive, well organized with good documentation is better than optimized and compact. 
  12. Micrologix 1000 Fault Problem

    Looks like the software is in the Downloads/Demo software area.  I tried to copy the link: https://forums.mrplc.com/index.php?/files/file/868-rslogix-500-micro-starter-lite/
  13. Micrologix 1000 Fault Problem

    I'm not sure whether F10 still applies or if that was older software.  The steps prior to that - Monitor S:6 to determine the fault - will require getting online with the software.   RSLinx is the communications interface, but you will need RSLogix500 in order to get online and view the program and check that status word.  RSLogix500 talks to RSLinx which talks to the PLC.  For the Micro 1000 there used to be a freebie package available.  It used to be posted on this forum.
  14. ML1400 RSlogix Micro

    When you said they could download the program with RS500, does that mean they could open it in offline mode?  What messages did they get?  I would think if they could download it with the software they could edit it also.  I think there is some missing info here.
  15. How can you log data flow totals in a AB 1100

    Mickey's going old school!  Used to be the way we had to handle floats for some processors.  Glad those days are past, but that is a valid way to use integers.  The problem that I think you will have with the micrologix is a 256 max data table.  I think you can only have 256 elements in each data table.  Maybe mine is old.  If this is a problem then you will need to split your 365 elements into 2 different tables.  I would suggest that you could use indirect addressing to move your values directly into floating point registers.  When your index is greater than 255 then enable a different move that points to a different table.  Something of the format:  F8:[N7:0]  where N7:0 is the index of the element in your F8 file.