Wireless errors

I have been running a combined wired/wireless system for several years no with no problems, but recently have been experiencing long delays when operating groups across the network. Frequently it can take 3-4 seconds for a group to change and often you need to press the switch multiple times for the command to be actioned. Logic operating on the wireless network has become so erratic I have had to disable it. This is generally only a problem between the 2 networks. Wired to wired works flawlessly and wireless to wireless only rarely fails. When I examined to statistics over a 5 day period I get the following for the gateway and a typical switch:

Wireless Gateway

Total packets received 61801
Total packets received with error 4370
Total packets received with NACK 37
Total packets received with NCA 24
Total number of collisions detected 4760
Total number of transmit attempts 757677
Total number of transmit cancellations 3
Total number of collisions detected in TEP 33607
Total number of collisions notified during packet 2486
Total number of transmissions dropped 692624
Total number of successful transmissions 26867
Total number of transmissions NACKed 52

Neo switch (typical)

Total packets received 777331
Total packets received with error 8589
Total packets received with NACK 13732
Total packets received with NCA 123
Total number of collisions detected 10821
Total number of transmit attempts 8422
Total number of transmit cancellations 2
Total number of collisions detected in TEP 1065
Total number of collisions notified during packet 164
Total number of transmissions dropped 2417
Total number of successful transmissions 3492
Total number of transmissions NACKed 1281

Note that for the gateway I am getting 91% of transmissions dropped, and for an individual switch only about 30% (which still seems high). I have no other equipment operating on 433MHz and a scanner show no particular activity either. I have tried relocating the gateway to several alternate location without success, and all other wireless units appear to be working correctly.

Any suggestions would be gratefully received.

 

same

have had same ongoing problem on large project 1 wired cbus network and 3 no wireless cbus networks ,i have put it down to the building constuction ,alot of concrete ,underfloor heating and stuctural steel work.
might help point you in right direction .

regards conor

 

I've actually tried positioning the wireless bridge right next to a NEO wireless switch with a same results so it's unlikely to be obstructions limiting the range. What I don't understand is how the bridge can get so many transmission failures when most of the transmissions wouldn't be acknowledged anyway, so how does it know they failed? What cause transmission failures anyway and why is it only the bridge suffers from them so much?

Ashley

 

I see your in this part of the world so just wondering if this is related ?
http://www.cbusforums.com/forums/showthread.php?t=5690

My wireless network has just in the last couple of days started working again - just as spring emerges. It was erratic for the last three months. Same last year in winter. I have a wireless switch in an unheated porch. A separate adjacent interior wireless network has remained fully operational so I'm not thinking interference. I haven't yet had the time to investigate the cause although I still suspect it's temperature related.

K