Communication Lock-up

[Elecnut33]

I have a H2-ECOM100 and I am using ECWX/ECRX commands to send modbus command numbers to a Rice Lake. I have a small subroutine running in the rice lake to display the word bus, when it receives bus traffic.

When I power-up the unit, I get an initial weight reading to the PLC, but it does not track also I get the word bus on the rice lake unit. I then press clear on the Rice Lake to remove the word (bus) from the screen. I stop the PLC than restart it, the weight value in the PLC does not change, and the word bus does not reappear. It isn't until I power the system off then back on that I see the weight in the PLC change, and the word bus reappears on the screen.

Does anyone have any insight as to why the comms are locking up?

Thanks,
Nick

[Elecnut33]

BTW- this is a 205 with a 260 processor.

[Greg]

Nick, I reviewed your project you sent me, and I sent an e-mail with my comments. I also left you a voicemail. I'll be out of the office at Automation Direct Thursday, 16-Oct-2008. But back the next day.

[Elecnut33]

Greg,

Thanks for your help with this, the subroutine I was using to display the word "Bus" was causing the comm's to lock up. When I removed that subroutine my comms began working perfectly.

Nick