[Communication Driver Error (206)]

On 5/28/2019 at 8:18 AM, DanT said:

H;

 

A few more questions  :

What is the Communications setup in the PLC   ( V130, V350 )?

Port 2  -- Ethernet or RS232/485  or None?

 Which Port is being used for Programming?

Which Port is being used for Modbus?        Is the Modbus   Serial ( RTU) or Ethernet (TCP)  ?

 What is the Baud Rate  for the Com Port(s)?   If unknown, this can be checked via Info Mode.

Is the Modbus set up as Master - Doing the polling?

                                            or as Slave - Responding to requests for data?

Are you using COM 1 for Modbus and Programming?

            Using COM1 as a Modbus Master and for Programming is asking for trouble     Communications Clashing - In and Out

            Is there a way in the program to disable the Modbus Communication and allow the port to be used for programming ?  Maybe in a user menu?

            Separate if at all possible - Add a 2nd Comport or Ethernet Port.

 

If there is a COM 2  and it is RS232/485  then this would normally be used as the Modbus Com Port and Com 1 is open for Programming and Remote Access

   Is Com 2 Setup for Ethernet ?  --   IP address  and PLC Name and the Program Name  can be gotten via Info Mode.

         Then Modbus Serial will use Com 1 , and you can get into the PLC via Ethernet

           You can go Online with the Unit and at least looks at the data  even if you do not have the program.

           You can try an  UPLOAD  from the PLC  - If the program is unlocked, you can recover the ladder.

                                                                                                   -- If the ladder is locked, then you are out of luck.

          ( DO NOT ATTEMPT a DOWNLOAD  as this will overwrite the program in the PLC !!!!!! )

 

DanT

 

 

 

 

V350, Port 2 Ethernet; I wa using RS232; I wanted to use port 1 for the modbus RTU, now I cant enter via RS232, 
  Using COM1 as a Modbus Master and for Programming is asking for trouble     Communications Clashing - In and Out...... Yes, It is just  the problem  that I have.

I dont have problem to lose the PLC program

Can I load a new program from the SD? 

[Communication Driver Error (206)]

On 3/10/2019 at 11:37 AM, Flex727 said:

We need to know which PLC, what version of VisiLogic, what communications method, and what physical connection you are using. It would also be helpful to know if you've tried other connection methods and if you were able to connect previously, and if so, what changed? Also, are you trying to connect to a new PLC or one that already has a project loaded?

Hello, I have a similar problem, I have a PLC V350-J-TR20, the Visilogic version is 9.8.79 Build 0 Beta, 
I have the RS232 physical connection with the MJ10-22-CS25 cable, the PLC already has a program loaded, 

the last program has a modbus configuration that is possibly causing me the error, what do you recommend doing?

Thank you