Laptop using Vlinx not able to Connect to PLC network While Lookout and Kepserver is running

[reporttest]

I have to shut down Lookout and Kepserver to allow access to the PLC network with

a laptop that I use in the plant to troubleshoot with.

All PLC's are IDEC brand.

The laptop uses VLINX  to create ports and I use the IDEC Windldr software to monitor

the PLC's. Everything works well as long as I follow the shutdown process.

I would like to be able to run Lookout and another PC on the same PLC network at the same time.

What Gives?

Please Help as this troublesome.

Thankyou

[Mike@Forshock]

I would look into the possibility that the system (PLC) is receiving multiple commands. Using a serial server means that only one device can connect at any given.  

Example:  

We have deployed a few systems using ethernet to serial devices for radio communications.  The serial server can only connect to one ethernet device within a specified time frame. After the timeout is reached, then the serial server will allow another device to take control.  Therefore, we can only send commands from a single device at any given time.

Reason:

Normal:  Request 1 -> Response -> Request 1 -> Response -> Request 2 -> Response

Problem: Request 1 -> Response -> Request 1 -> Request 2 -> Invalid response?

Good luck,

Mike