Ken Moore

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Posts posted by Ken Moore


  1. Don't take this the wrong way, but I think you are holding on to the "AD" way, I've never seen the Jump and Label used like you plan, I have always used it for looping. I'm not sure what happens to the logic you will skip over. If a rung was true last scan, and is skipped this scan, will the ladder hold it's last state? Not sure. If you could share more details, maybe someone could bring a different solution to the table for you to examine. For example: How many positions does your switch have? How complex is the code for each position, 10 rungs, 100 rungs, 1000 rungs? Will the same outputs need to be switched in more than one switch position? Ken

  2. I think your expectations for the 2nd job are unrealistic. You have listed: 2-3 years engineering experience, preferably in the automotive industry. Proficient in Allen Bradley and Siemens PLC programming. It takes a smart AB guy about 2 years to migrate to Siemens. Having a person with only 2-3 years of experience and the skill sets you are asking for is a very very long shot. I hope the pay matches the requirements.

  3. Okay, they are going all the way, replacing the 1771 I/o. Our local AB rep came by and demo'd the i/o migration hardware. Looks pretty good. You can keep the 1771 Swing arms and connect them to a migration adapter. Saves having to rewire. Of course they only handle standard I/O modules, special modules will have to be rewired, such as CFM's.

  4. I may be working on a project to migrate a very large PLC5 installation to CLX. I know in the past there was limitations on the amount of analog I/O you could access with CLX to a remote chassis, I assume this has been addressed and I am bringing up old problems that are no longer relevant, right ????

  5. I have a customer that has a piece of skid equipment that came with a ML1400 series A, and some sort of panel view type display, not sure of brand yet. He wants to connect this skid to his DCS for monitoring and alarming. He already has a copper to fiber converter installed and fiber ran to main control panel. Question: If I replace existing ML1400A with a B series (which supports Modbus TCP/IP), can I also continue to communicate to the Panel view via DF1 or CIP ( not sure which is used). Does the ethernet port support multiple protocols at the same time? Inquiring minds want to know. thanks in advance.