RS232 Public Protocol

Is there a way to mimic an actual button press via the pci and an external device that can generate a rs232 command at the moment i can ramp, switch on and off via the public release protocol but i rally want 1 button that will act as if it was an actual cbus switch to dim up and down etc.

 

Rs232

Slightly clearer,

If i issue a ramp to 0 command to the pci wont the light just ramp to 0 and stop irrespective, of how long the button is held on my remote that is driving the pci? Then if i press the button again i presume nothing will happen because it will just try and ramp the light off again?

 

When you hold in a button on a C-Bus switch it sends a ramp to either 100% or 0% over x seconds. I can't remember what x is but is's something like 8. So it's the dimmer that is doing the ramping over time

When you do this the switch starts an internal ramp of its own that tracks the ramping of the dimmer. The internal switch ramp does nothing except provide the switch with a way to figure out what the level is if (or when) you lift off your finger before x seconds has elapsed. At that point (lets say the 4 second mark) the switch calculated the dimmer would have the light at 50% so the switch sends a ramp to 50% over 0 seconds (instant) this effectively stops the previous dimming command.

You can sometimes see a small correction happen when you are dimming and release your finger, you will see the actual brightness shift slightly.

So in theory you can do all that yourself and just issue the 2 commands at the appropriate time.

Cheers

Rohan

 

rs232

Going to be a tough call to wright a programm to mimic a switch then.

 

I am interested in what you are trying to do. Are you trying to incorporate a C-Bus interface into one of your products and present the user with your own buttons to mimic a C-Bus unit?

If so, you could use a bus coupler to do the C-Bus button interface with your buttons, and use the PC Interface to detect commands on the bus for your system to use. This is probably the easiest way if your system is a one-off.

If you want to integrate C-Bus more directly into your system, there are more ways to achieve what you want, but you would have to join the C-Bus Enabled program to gain access to the details.