Member Since: 09 Apr 2010
Location: Friesland
Posts: 20
W-Bus technical
Hello,
I'm wondering what exactly the w-bus is. I know its from Webasto but couldn't find a technical desscription on how it works.
My FBH is connected to the Danhag w-bus device and works very well. However i also have the Webasto Oval Timer 1533 lying around. How can i hook this the FBH Danhag combi? Just adding an extra wire to pin 2 of the FBH? Is this what the Y-Cable does?
Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532
how are you using the Danhag w-bus device, or how are you activating it ?
Pete
1st Dec 2010 9:30 pm
Trackman
Member Since: 16 Apr 2010
Location: Glasgow
Posts: 430
W-Bus is similar to RS232 but works at 5Volt levels and is at 2400baud
Finding out what the commands are is a different question.........
Ian.
1st Dec 2010 10:25 pm
dick dastardly
Member Since: 29 May 2007
Location: wiggleigh bottom
Posts: 1112
converter w bus out (yellow) to pin 2 of heater.
Oval timer +12v out(pin 2 black) to converter input control (orange) should do it.
usually oval timer pin 1 (wbus) to pin 2 of heater is used but this requires that car is shutdown cant open doors etc.
converter removes these restrictions.
I used the webasto T91 remote out into the converter. worked fine until T91 gave up the ghost. was v expensive, so replaced with danhag gsm unit (original converter now redundant.
I have just ordered the danhag ipcu unit to control the blowers. dont know how to wire it yet, hope instructions are good.There's one wheel on my wagon, but i'm still rollin' along, it's the cherokee, they're after me, but I'm singing a happy song
1st Dec 2010 11:22 pm
evo8
Member Since: 29 Jan 2008
Location: Zalesie
Posts: 289
dick dastardly wrote:
.....usually oval timer pin 1 (wbus) to pin 2 of heater is used but this requires that car is shutdown cant open doors etc.
converter removes these restrictions.
....
interesting so it can prevent shutting FBH down by the car when you unlock the car, open the door etc. Does it still keep the functionality in place when the car is regulating (the power of the FBH during the engine running depending on the temps etc?)2013 D4 TDV6 S; Baltic Blue; IID Tool BT
2007 D3 TDV6 SE, Auto; club Faultmate MSV2
2nd Dec 2010 2:02 pm
D3MY07NL
Member Since: 09 Apr 2010
Location: Friesland
Posts: 20
Thanks for the replies to my question.
@Bellauto's: I'm using a 'new' Danhag v7.0 device with build in w-bus support. So this GSM device connects directly to the FBH on pin 2.
Is it possible to connect pin 1 from the oval timer directly to pin 2 of the FBH. This means that both devices are connected in parrallel to the FBH. I don't know if the w-bus specifications allows this?
On my danhag device there is no 12V input to activate the w-bus (only an alarm
Member Since: 29 May 2007
Location: wiggleigh bottom
Posts: 1112
evo8 wrote:
dick dastardly wrote:
.....usually oval timer pin 1 (wbus) to pin 2 of heater is used but this requires that car is shutdown cant open doors etc.
converter removes these restrictions.
....
interesting so it can prevent shutting FBH down by the car when you unlock the car, open the door etc. Does it still keep the functionality in place when the car is regulating (the power of the FBH during the engine running depending on the temps etc?)
i don't know how it does it, but if i've told the converter to heat for 60 minutes, then start engine, go on short trip to shops, stop engine/lock car/do shopping, with engine temp less than normal, then the heater carries on working until engine is up to normal temp. After the converter time is up the car controls the heater as usual via the can bus.
After all that, i think a simple "YES" would have sufficed There's one wheel on my wagon, but i'm still rollin' along, it's the cherokee, they're after me, but I'm singing a happy song
4th Dec 2010 12:37 am
Hijack
Member Since: 19 Jul 2006
Location: Hampshire
Posts: 381
dick dastardly wrote:
I used the webasto T91 remote out into the converter. worked fine until T91 gave up the ghost. was v expensive, so replaced with danhag gsm unit
I've just got my danhag gsm unit, I wonder how have you wired yours? Just red +12V, brown - ground, yellow - pin 2 of webasto, or have you also connected orange cable to ignition switched +12V ?
Quote:
I have just ordered the danhag ipcu unit to control the blowers. dont know how to wire it yet, hope instructions are good.
That's my plan too D3 XS Manual - gone
13th Dec 2010 11:45 pm
Nic
Member Since: 03 Jan 2010
Location: Stockholm
Posts: 3
I've just installed a GSM start with the T-91 remote. since I didn't know if connect the yellow W-bus to the relay cable harness or purple wire that is not wbus I went for the yellow one. Now the Callstart works and starts the blower but not the FBH. Should it not be connected to Wbus?Discovery 3 TDV6 HSE -05
ex Discovery II, TD5 ES
24th Dec 2010 11:51 am
dick dastardly
Member Since: 29 May 2007
Location: wiggleigh bottom
Posts: 1112
Hijack wrote:
I've just got my danhag gsm unit, I wonder how have you wired yours? Just red +12V, brown - ground, yellow - pin 2 of webasto, or have you also connected orange cable to ignition switched +12V ?
yes I now have the GSM unit installed and orange is connected to ignition so that when the ignition is on the GSM shuts the heater down to allow can bus operation only. Also the GSM goes now to the converter which controls the heater. I did this because I bought the cheap GSM unit (not the PRO) and the converter can use a TTV specific data protocol (not wbus) and having much more control over the heater, fuel pump etc.
Also in my original config, the ignition was not being used, so the converter was never shutting down until the configured time.There's one wheel on my wagon, but i'm still rollin' along, it's the cherokee, they're after me, but I'm singing a happy song
25th Dec 2010 1:25 am
Steff1
Member Since: 17 Aug 2009
Location: Trondheim
Posts: 67
So the Danhag GSM pro version is the best choice for TTV in Disco3? It has the converter integrated, right?
I want ONE box that controls everything and not influenced by doors open or not(sleep/awake), but at the same time doesn't override the CAN BUS signalLand Rover - It Hurts So Good
2005 TDV6 HSE PP Java Black, 2009-
MTR, Prospeed Quest roof rack, OEM ladder, B.A.S FBH Controller
yes I now have the GSM unit installed and orange is connected to ignition so that when the ignition is on the GSM shuts the heater down to allow can bus operation only.
Where did you connect to the ignition?
ThanksVolvo XC60 - does all that the D4 should have done
Discovery HSE MY16 (good apart from the heating), now sold
Audi TT Roadster (wow)
MGB Roadster (owned since 1992)
Discovery 3 TDV6 HSE MY08
Saab 9-5 Aero 2002 (gone but not forgotten)
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so it can prevent shutting FBH down by the car when you unlock the car, open the door etc. Does it still keep the functionality in place when the car is regulating (the power of the FBH during the engine running depending on the temps etc?)
