Opener configuration issue. time out

hi.

sks ht4200 wiring based on generic bus system wiring guide.

every time i try to configure the opener it times out waiting for door open the signal.

during configuration it always connects to bridge during first stage but during opener configuration it says it is not connected to bridge continue or cancel… if i continue it times out during door opener stage. if i set up bridge again it connects then when i start configuration it says it is not connected to bridge cancel or continue.

any troubleshooting tips appreciated