burden and clock

I'm a C-Bus installer in Japan.
I would like to understand configuration of burden and clock.

1. Hardware burden and software burden, which one is best for preparing for trouble.
2. How many clock generators should be arranged on c-bus network.

Hello everyone,

My understanding of burden is,
Hardware burden is better than software burden.
When a trouble occurs in the unit by which soft burden is set up, a network is because burden is lost.

My understanding of clock is,
------ Inside C-Bus -----
6.16 No C-Bus Clock
If there is no C-Bus clock on the network then the C-Bus network will not work. There is
an algorithm in the C-Bus units that checks to see if a C-Bus clock has been enabled. If
there is more than one clock on the C-Bus Network, then the C-Bus units will see this
and disable as many clocks as needed. This process is automatic and usually takes any
time between 1 second to around 2 minutes.
It is recommended that no more than 3 C-Bus Clock be enabled. This will avoid
communication delays after the C-Bus Network is powered up.
-------------------------
Two clock-muster should be arranged in c-bus network.
These two units should be connected directly in short cable.
If clock muster is only one in c-bus network,
When a trouble occurs in the unit by which clock-muster is set up, a network is because clock is lost.
If two clock musters arranged both edge of c-bus network and it is instability network, clock-muster getting process does not work smoothly.

C-Bus distributed environment is quite good.
I would like to delete single point of failure in c-bus network.

Please give me any suggestion for my understanding.

Thank you very much.
Yoshi

 

Hi Yoshi

The most reliable configuration is:

• C-Bus Clock enabled on 3 different devices in the network. If one fails for some reason then one of the other 2 units will start to generate the clock. If the clock is enabled on lots of devices then it can take a long time for the network to settle with only 1 device generating the clock signal.
• 1 Network Burden per network. Software or Hardware Burden is OK. Many installers prefer to use only the Hardware Burden because they can see it physically and can guarantee only 1 is connected. There is never any doubt when a hardware burden is used. Occasionally the pink heat-shrink on the outside of the hardware burden may interfere with the RJ-45 connector and needs to be trimmed back a little bit, this is the only thing to check.

 

Thank you

Hi Newman
Thank you very much for your explanation.
I clearly understand configuration for making stable c-bus network.

I developed c-bus www interface software, which is working in microchip's demo board.
It is still under development phase.
If you can evaluate it, please access.
URL is
For PC access http://infos2.dyndns.org
For Mobile access http://infos2.dyndns.org/mobile.htm
User name user1
Password 123456* (* is the number displayed on a top page)
You can access Control and Web Camera pages.
You can check light condition in Web Camera page.
Web Camera is made by Panasonic. It needs to install ActiveX.
If you don't want to install it, Please don't touch Web Camera tab.

Thank you very much.
Yoshi