Als

MrPLC Member
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About Als

  • Rank
    Sparky
  • Birthday 06/27/86

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  • Gender Male
  • Location Kiunga
  • Country Papua New Guinea
  • Interests Industrial Instrumentation and Process Control.

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  1. Analog Input Module not talking.

    Thanks Steve Bailey, I did successfully downloaded the new configuration to the NIU. Validation showed nil errors in the feedback zone. Below is the layout of the current set up. Module encircled RED below is the one giving me the problem. YELLOW circle is where Rx3i Processor is.   0005047-D-003-Network Layout.pdf
  2. Analog Input Module not talking.

    In one of my remote I/O stations, I have a 12BIT, 8 Channel analog input module (IC200ALG260) that is not talking to the Rx3i processor.  This issue came up after I have disconnected the analog output module that comes after this particular analog input module (plug side by side) and did a reconfiguration (This was done to successfully resolve an issue that came up, as there was no field analog output devices connected to this particular remote I/O station). Am just wondering if an Analog Input Module in a remote I/O station really requires an analog output module to be connected with it to function well.   
  3. SLC5/05 PLC is not Working!

    Thank you Ken Roach, Yes, the cabling between the PLC and the citect looks bit suspicious so will definitely have a look at that first.
  4. I have a SLC5/05 Allen Bradley PLC that talks to Citect SCADA version 6.10. From time to time, am losing a part of Graphics on the citect that I had to run a back-up copy of the PLC program to restore the missing graphics. However, this seems to be consistent so I decided to replace the CPU. But replacing the CPU did not help.  The alarm message "PLC is not Working!" seems to be coming on say every 2-to-2.5 hrs. This has never happened before but it just developed lately. If replacing the CPU with a new one did not help, then what else could be the fault. Had anyone ever had a similar issue before, please help. Thank you,
  5. IC200MDL742 Digital Output Module

    Thank you so much Steve Bailey. I checked through the wiring and found that +24VDC was present at terminal 18 through one of the digital outputs on that same module to a field device. I am in the process of locating that field device. This is a fairly old plant that I am working in and much of the information like electrical schematics are no longer available. This is happening in one of the five Remote I/O panels for GE Versamax, all linked via Profibus Network Interface. I isolated that particular discrete output and the 24VDC circuit breaker now effectively interrupts all DC power supply. Seems that this particular output was back-feeding the module which must have damaged the output module.  With this issue isolated, the network fault LED on the Profibus Network Interface module is now solid Green, i.e. healthy.   Thanks a lot Mr Steve Bailey.
  6. IC200MDL742 Digital Output Module

    Hello, When I Switch off My main circuit breaker for the 24VDC for the PLC panel, I still have 24VDC supplied loads remain ON, when all are supposed to be off. I measured across terminals 17 and 18 of the Digital Output Module - IC200MDL742 and am getting 24VDC even with my power supply switched off. This is giving me PLC network error.  Am I supposed to be getting that 24VDC across terminals 17 and 18 of the module even with the power supply switched off?   thank you,
  7. Citect Explorer

    As being new to Citect Explorer Graphics builder, am faced with this error: "Error starting: CTSETUP.EXE. The requested operation requires elevation."   I Need some help to get this error fixed.   Thank you.
  8. GE Fanuc 90-30 & 90-70

    The Copper Processing plant that I am working in now still have series 90-70 in use. Other parts of the plant use SLC5/05 of Allen Bradley.  Would anyone tell me if both 90-30 and 90-70 of GE are still on the market today?
  9. Hi there,,, Anyone knows the steps in configuring Cisco Catalyst 2955, please help me out. 
  10. Hi, I have AB SLC05/5 PLC controlling Metso Filter Press with Citect SCADA version 6.10. I now have a problem where several graphics on the main graphics page are missing, thus preventing Control Room Operators running the equipment (Filter Press). I have to restore the missing graphics to have the equipment back running. I connected my laptop PC on which RsLogix 500 is installed, and verified Ethernet communication between the PLC and the laptop from RSLINX Lite. However, when attempting to verify communication on the RsLogix 500 under Communication Tab, I have this message popping up: "RsLogix 500 Security Violation. 'You are not authorised to perform this operation(Communications Configuration).'" When attempting to go On-Line, this message is also popping up: "The current security connection is no longer valid." This is preventing me from going On-line to clear the faults and restore the missing graphics. I am just wondering if one of my workmates who had worked on it earlier - who is not familiar with AB PLC - had done someting silly and is hidding it from me. Can anyone please help me resolve my issue. Thank you so much for your help.
  11. This is it! TWControls, you are now lighting up my PLC pathway. Thank you for resolving my problem.
  12. This brings more light now. Thank you so much, TWControls. I would very much like to use 250 Ohms resistor to take 1-5 VDC into my voltage analgue input module, but my problem is that ML1400 has a built-in 0-10VDC analgue input module that I am now trying to use. Can I stil use 250 ohm resistor to take 1-5VDC into the PLC?
  13. Thanks so much Transistor for affirmation. Will try it out and see how it goes.
  14. I am building up an Allen Bradley ML1400 PLC training kit for myself. Now can I apply 4-20mA from my Process Fluke Multimeter to a 500 ohm resistor to obtain 1-10 VDC and use that as my Analogue Voltage Input into the module? thank you,
  15. I have RsLogix 500 installed on my process laptop PC (Ms Windows XP, Professional Version 2002, Service Pac 2, Dell Latitude D630 Intel(R) Core (TM)2 Duo CPU, T7500 @ 2.20 GHz, 2.19 GHz 1.99 GB RAM). I have been using this to access AB SLC5/05 PLC in the past years with no issues. But its now popping up this error message: "Fatal Error! The copy Protection License for the application could not be acquired. Error2, " and the program could not be opened now. I need to open up the program so that I could go on-line to run the back-up program. I thank you so much in advance for helping me out.