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  1. Good afternoon, I have a little problem on my hands with some test units I have recently received. PLCs are very new to me.. and I'm learning quickly, so here is some background. I have five test units which are all identical in their control hardware (and I believe in software as well). The units run a SYSMAC C200HS PLC which feeds into a NT30C-ST141B-E HMI. On boot up, three (3) of the test units display "battery lowered" on the first screen.. then it switches to a "connecting to host" screen and stays there. They never leave the "connecting to host" screen.  I went through both the PLC and HMI on each unit and found the HMI's battery was indeed dead. So I replaced that and the units no longer say "battery lowered" and now only shows the "connecting to host" screen.  What's interesting is that the other two (2) units that did not have battery trouble booted right up and opened the home screen of the HMI and allowed me to program and run the test unit as it should. None of the five (5) units have received any programming work or changes since they ran last.. simply a long period of dormancy during which some of the units' HMI batteries died. So I my question is this.. would letting the battery deplete and then replacing it with a fully charged battery cause issues "connecting to host" and if so, where would I start in my trouble shooting process? I am open and grateful to hear any advice on this topic and input you may have based on my situation. Thank you in advance, Ed
  2. Hi everyone! I got this machine with a CP1H PLC and NS8-TV00B-V2 as PT. I was told that they were working fine, but suddenly, It appeared a communication issue: black screen and "connecting..." at right bottom. I dont know if It is a configuration problem or some hardware damage.  These are the configuration in the PT and the PLC. The communication is through RS232 Serial.  I tried to communicate another PT screen with the same communication settings and IT WORKED!. ' I've been thinking that, perhaps, the serial port A is damaged, I have tried to set port b, but I havent could. How can I configurate PORT B??   THANKS...  
  3. Hello, Thank you for giving me the opportunity to join your awesome community. I am pretty much a beginner in using more than one PLC so please bare with me. This is my problem so far, I have four C1JM PLCS with no Ethernet port built into them BUT I also have four serial to Ethernet converters (MOXA NPORT 5110) and a switch. I want to make a small control room so that I can control all of the PLCS from a single PC using CX-Supervisor. My problem is that i don't know how to make a network between the four PLCS and the PC and how to configure them on CX-Programmer and CX-Supervisor so that i can control all the four PLCS from one PC.  Your help will be much appreciated. Thank you in advance and have a nice day :)
  4. Hi guys, I have a problem with GX IEC Developer 7.04, i hope some of you can help me. When i try to connect with the PLC type - Melsec FX1s- 30MR-DC, there is an error: I check all COM port settings, and everything is ok. Com_port parameters: FX Parameters: Transfer setup: PLC Type in the program is the same like physical one (FX1s). I try to change all of this stuffs but there is no result. The cable I use for comunnication is this type: Thank you very much in advance. Have a nice day! eng R. Bukov