Jump to content

louisgermain6

Members
  • Content Count

    7
  • Joined

  • Last visited

Everything posted by louisgermain6

  1. @Saragani yes, this is the way I'm using it. I was telling in the first post that I'm using it the same way in another project but with another host (PLC=Master, Host=Slave) and it works properly but with my new program it doesn't. As I said, I sniffed the serial transmission and the messages from the PLC and the pumps are correct. The problem seems to be the RS485 to USB conversion or the PLC because my registers never get the returned values. (In my first project I didn't had this problem) Thank you for your help. Cheers Louis
  2. Thanks Kikis, It seems that it was the problem! You resolved it. Regards, Louis
  3. @Flex727 FYI I just performed another uninstall/reinstall of Visilogic and I still have the same problem. Maybe a version problem ? I'm using the last one 9.8.80 ? Cheers Louis
  4. @Ausman I did try it as soon as I read your answer and it hasn't changed anything.. @Flex727 It happens with every project yes, and the curious thing is that it started to do this since I reinstall Visilogic the last time. Thanks you guys. Louis
  5. Thanks @Joe Tauser, Yes I'm using the Unistream as a Modbus master, I will hope for an answer from @Saragani and by the time we can resolve this I will simply buy a UAC-CX-01RS4 - RS485 port. Louis
  6. Hey guys, I wish you could help me with this one... I'm currently doing a project using a pump that communicates by Modbus RTU to my US7-B5-TR22. The serial communication and code is done by USB. I'm aware that you recommend to use a Prolific USB to serial converter, I have a FTDI one that worked perfectly in an other configuration but still modbus using serial by USB. Now I can't understand why on my new configuration it fails. I "sniffed" the communication between the PLC and my pump using my computer and a serial terminal, the request of the PLC and response of the pump are correctly sent. The problem is that the PLC doesn't seem to receive or decode well the response because every sessions in my remote slave are failed. Thanks in advance for your help, I attach a piece of code for you to have a look of what I've done. Cheers, Louis test.ulpr
  7. Hey guys, I recently had to uninstall and reinstall Visilogic because when I had to change an operand value, the window was popped behind the main one and I couldn't do anything. But that is not the problem anymore. As the title says, the situation is that all of my coils and contacts are cables, I mean instead of seeing the NO contact I see a connection but it has the effect wanted (see screenshot). Does it happened to anyone and find the way to resolve it ? Visilogic version : 9.8.80 build 0 OS information : Windows 10 Pro Thanks for your help. Louis
×
×
  • Create New...