wave

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About wave

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  1. Hello everyone. I have Omron CJ2M-31 PLC with SCU32 communication unit, and 34 3G3MX2 drives with repeater. I use "Easy to use Modbus RTU Master for CP1L CP1H CJ1 CJ2 CS1" written by our member PMCR (thank you PMCR for sharing your experience). I need to reed VFD status, reset fault, and write the speed. I tried the sample code version 2.12 with a single VFD, but in my test application it works inconsistent. I had got communication in the first place, I could control the drive, but I lost it after program modification and downloading (I did not touch communication part). I was able fix communication only once, and lost it again. I didn't find any correlation between my action and communication presence ( I tested dual port program version). If the communication is present, SCU unit blinks fast, otherwise slow. I have cleaned PLC memory and initialized PLC without any luck. Unfortunately, PMCR is offline. If anyone is proficient with mentioned above program, please advise where to look. Thank you in advance. 
  2. Hi PMCR, thank you for sharing your experience. I have Omron CJ2M PLC with SCU32 communication unit and 34 3G3MX2 drives with repeater. I need to reed VFD status, reset fault, and write the speed. I tried your sample code version 2.12 with a single VFD, but in my test application it works inconsistent. I have got communication in the first time, I could control the drive. After program modification and downloading  I have lost communication (It was restored only once, and lost again). I didn't find any correlation between my action and communication presence ( I tested dual port program version). I cleaned PLC memory and initialized PLC without any luck.  Please advise where to look. Thank you in advance.