Problems with T-stats

[Scrambled]

RCS Serial Thermostats Error in Poll Thread, Argument 'Start' must be greater than zero.

6/26/2008 12:51:50 AM RCS Serial Thermostats

[Rupp]

I would recommend checking you cabling. This looks like some garbage is being transmitted on the serial stream.

[Scrambled]

Thanks Rupp.

I checked all of the wiring, and I even changed the RS 485 chip in the hub. It still is doing the same thing.

The last item is to change the RS 485 to serial adapter. I need to order one, so it will tak.e a few days for it to get here.

I will let you know if that works.


Thanks


Steve

[druide]

TR40 Serial comm errors

This is a typical non grounded error

Comm errors are common on TR40's Serial interface when not using a shielded and grounded cable between the 'control unit' and the RS485/232 converter.

Anything RS485 must be grounded to work properly; This scenario was tested in our labs over a period of 5 months on 2 TR40, 1 with ground and the other without and the ungrounded TR40 gave us 18 errors on average per day.

Yan.

[zimmer62]

This is great news. I've seen errors like this pop up for me, but I've ignored them because everything was still working fine. I'll rerun a cable this weekend that's shielded and grounded and see what happens.

Thanks for the info!