LIVE PLC Questions And Answers

Feel free to ask any PLC RELATED question here. If you know the answer to an existing question, help everyone by posting an answer. Enjoy!!!
Does anyone have a good way to assign values to STRING tags in Structured Text? It seems that you cannot use text in quotes....i.e. StringVar :=...
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Hi all, I need help to create this program I have problems with the flasher. Develop the program below using RSLogix 500 software. Be sure to...
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attended a getting familiar with the new siemens tia portal and the rep said there was a document that there was a class that siemens taught that...
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Hello everyone. I am using HC900 plc from honeywell and the software HMI scada. I can comunicate with the plc using scada, it appears the green...
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Resently I posted how to shut down the PC from inside Intouch using "WWShutDownWinNT40" from the "WWTech32" Add-On Script Function library. These...
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I thought I was nearly finished on this TIA Portal/s7-1212C project (famous last words)... Up until now, I'd developed the PLC/HMI such that the...
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Hi all, I really need help with this one. I'm at a complete loss... For months and months, I've had no problems with pressing a NEXT button to...
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I've got a G4(board only)with a MMI port problem. I do not know the IP, but I believe that port works. Is there a way to reset the device to...
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490
Hi All, Most of what I do in Click PLC is what I learned over here! But I'm running into a problem I just can't solve. I spend so much time on it...
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Hello everyone! We have a project running on a 1756-L72. The controller’s data and logic memory is about to end. We have about 8% free. I have a...
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We have a keg check weigher that that lost a fight to a forklift. The scale was previously a Systec IT3000, which was the only PROFIBUS slave...
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633
Multiple PLCs in our plant communicate using either MSG instructions or Produce/Consume. Is there an industry best practice for documenting this...
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I have really hit a wall in a few situations, and asked a professor at a college this question. He said no, but I will ask it here. Can you use...
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Been struggling to wrap my head around this all day, maybe someone else has an idea. I've got a pressure sensor connected to a 1771-IFE analog...
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583
I was online a SLC5/04 yesterday and one thing I did was go to processor properties and set the date and time to get the PLC clock current. It...
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I cannot believe how out dated these HMI's are. they are light years behind the competition, just like there safety products and drives!!
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597
Hey guys, I'm rebuilding my Rockwell VM, again... I've been doing a lot of traveling and am sick of not having the right version, so I wanted to...
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Anybody have any experience using a tone generator on analog signal wires? Trying to locate two analog level sensors in an old plc5 panel that...
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Greetings, I have this question: How can I add a tag, in my case LS:0 {#5} (literal string of tag #5), to a variable using VBA? I couldn't find...
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i don't have delta plc but i have its programming software wpl soft i make programes on that software but when i turns on simulator and debug it...
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Hi.In the S7-300 plc, DB100.DBB10, whose data type is byte, is transferred to db23.dbb10, whose data type is bool, with the move command. This...
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755
I am updating controls on a leak tester, from a SLC 5/02 to Compact Logix. The SLC used a DDV instruction to help scale a differential pressure...
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Is it possible to connect a PC to the mini console's RJ12 connector? use an RJ12/DB9 cable?
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In Studio 5000, I'm wanting to be more economical in my addressing to conserve memory. I read somewhere that DINTS are the most efficient data...
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580
I have a robot cell controlled via PLC. I want to use an output from the PLC, based on whatever part number the cell is processing, to open a...
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864
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