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  1. Hello everyone! I'm the new of site. I have a PLC Mitsubishi Q03UDE and want to latch data of D register. I've set the latch data from D500 to D580 in PLC Parameter, you can see it in the picture i've attached. It seems work well when I turn on PLC everyday, but when i turn off PLC for a few days ( about two or three days ), all the data goes to 0. So can you tell me what's the problem ? My PLC have no battery. Thank you in advance for your help.
  2. Hi, I'm trying to set up a TCP communication between a Q03UDECPU and a Beijer E110 panel  I've tried both TCP and UDP as "communication mode" in E-Designer. nothing seems to work.  What I'm I doing wrong Se attached files from E-designer and Gx IEC Developer
  3. I have a bit of an issue with communication between GOT1000 HMI (I think the exact model is GOT1675V) and Q03UDE PLC over Ethernet. The GOT is set to 192.168.1.4 and PLC is set to 192.168.1.2 but I get the error "Communication Error. Refer to System Alarm in Utility Menu". Now how do I access the utility menu? I have tried to tap and hold on the upper corners of the HMI but nothing happens. I also can not switch between screens when I press buttons even though they are directly linked via screen #. Almost like the HMI froze up. Wonder if anyone had similar issue and what the solution might be. Thanks for your help.
  4. This is my company's first time using a Mitsubishi PLC and our partners/clients advised us against using the built-in Ethernet port on the Q03UDE CPU, saying that we should instead use a standalone QJ71E71 Ethernet module. The QJ71E71 costs 1.5x the CPU module so there are significant savings in using the built-in Ethernet. They cited reliability issues but can anyone here back up their claim? We use our PLCs as simple I/O blocks - a PC runs a program which communicates with the PLC and tells it what outputs to fire. There is no actual ladder logic on the PLC. The PC connects directly to the PLC. I wrote a small C# utility that blasts the QX40 and QY80 input/output cards on my stack with random values and reads them back to ensure correct data transfer. The QJ71E71 Ethernet module averages 10 ms for a read or write operation and the Q03UDE averages 3 or 4 ms (much quicker!). So, does anyone have a reason to use the QJ71E71 port instead of the CPU? Thanks