Guardian

MrPLC Member
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About Guardian

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  1. FX3U and FX3U-232-BD not sending after stop cycle

    Hi Kinectix, I think I'm having the same problem... PLC receives the messages but doesn't send the response. I didn't understand quite well how you solved your problem... Are you using the RS485 software setup for a RS232 communication? What programming software are you using? GX or GX IEC? How you make to write the parameters only? Thank you in advance!
  2. FX3U Modbus communication

    Hi kaare_t, First of all I should say thank you! I found a program demo for slave PLC in meau.uk. In the first times it worked well. I communicated with PLC through RS232C with Labview and GX IEC software. Then I started to build the final application program and the communication failed. Now I started from the scratch again and it is not working. In the process I probably latched some register and now it is not working. I get the general error "ES:0180840b"... I'm not able to communicate with using Labview or GX IEC, but the Modbus Tools software ( http://www.modbustools.com/ ) works perfect... When I try to connect using GX IEC the RD flashes but there ir no answer! Could be something related with this? http://forums.mrplc.com/index.php?showtopic=26698 Do you have any possible cause/solution for my problem? That you in advance!
  3. FX3U Modbus communication

    Thank you kaare_t !!! I was looking for FB in the last 2 days. I only have found the FB for the FX2N plc. I tried to used them, but the memory/registers and the logic are different. I want have the plc as slave.
  4. FX3U Modbus communication

    I'm using GX IEC Developer v7.01 and Ladder language. The PLC is the FX3U-16M.
  5. FX3U Modbus communication

    Hi, I'm new in FX3U programing. I'm trying to build a simple application connecting a PC to a FX3U plc using LabView. I'm trying to follow this application note : http://www.ni.com/white-paper/13911/en/ I have a FX-USB-AW adapter and a FX3U-232-BD adapter. I can easily communicate with GX Developer software using both adapters. Can I implement MODBUS over RS232C with any one of these adaptors?