Monitoring data on a DF1 network.

Need to monitor the data values being transmitted on a DF1 network. My first thought was to add another DF1 device into the network with only the receive line connected. I would expect that second DF1 device would receive and decode all of the traffic and would not care that its responses were ignored since the original DF1 slave would be responding.

Has anyone ever tried this?

Have done this with a troubleshooting utility that came with my TOPDOC/SoftPLC software. you might want to contact SoftPLC Corporation.

Do you need this all the time or just to see it for a short time?