Honeywell Galaxy G2 Wiring

[fumet]

Hi,

 

I am going to upgrade my Galaxy G2-12 wired system to a wireless system.  The list of components I think I need to purchase are in another thread where I was asking about compatibility :-

 

http://www.securitywarehouse.co.uk/forums/topic/4414-ticket-question-wireless-peripherals-with-g2-12/

 

and are reposted here :-

 

- Honeywell C079-2 RF Portal

- Honeywell CP051-00-01  MK8 keyprox

- Honeywell C072 Boxed RIO expander

- 3x Honeywell TCC8M wireless keyfob

- Honeywell SMB10 Motion sensor mounts

- RS485 Bus wire : Twisted pair screen cable Belden 8723 equivalent

- 680 Ohm resistors

- 4x Honeywell DO8M   - Door

- 5x Honeywell IRPI8M  - IR

- 6x Honeywell DF8M   - Smoke

- 2x Honeywell CO8M  - Carbon Monoxide

 

 

My question is about the wiring on the RS485 bus.  I know it has to be daisy chained and the manual shows 2 examples of daisy chained and twin daisy chained.  Because of the layout of the house I would like to do twin daisy chained with 2 peripherals on one side.  

 

Daisy Chain from the manual :

 

Twin Daisy Chain from the manual :

 

My Suggested wiring :

 

 

Is my diagram correct?  Will it work?

 

Hope you can help and thanks!

 

 

[Secware_Tech6]

yeah thats fine. But on small runs with low device count you wont need the 680 ohm end of line resistor. Id wire as you have drawn but leave link 1 in and dont fit the eol resistors.

[fumet]

Thanks for your reply.  How short is a short run?  It will be maybe 15-20m.  Will that be OK?

Thanks again!

[Secware_Tech6]

Yes that's a short run