Vision 1210 communicating over Modbus TCP to 2 servos

[David Thomas]

I have two Festo servo drives and I am trying to communicate via Modbus TCP with the Vision 1210 set as a Master.  After a lot of research and trial an error, I have been successful writing a project to control one of the Festo servos.  I am trying to communicate with the second Festo Servo and I am having issues closing the port and establishing a connection to the second servo using TCP IP Connect   and TCP IP Close.  When I try to close the port, I cannot write to the first device and the read data comes in slowly.  I am sure it is do to the sequencing of opening and closing the ports.  I have looked at all the examples but not sure what to do at this point.  Does anyone have an example or some suggestions at how I can sequence the opening and closing of ports?

 

Thanks in advance,

 

mdavidthomas

 

Visilogic V9.9.0

Vision1210 _ModbusTCP_CMMTASMP_V5c.vlp

[Flex727]

You have 4 sockets available for Ethernet communications. Use a separate socket for each servo drive and you will not need to open and close your MODBUS connections.