Velleman projects VMBDMI Extended user manual - Manual (Page 5)

VMBDMI Dimmer manual – edition 1 5
VELBUS CHARACTERISTICS
 2-wire communication for Velbus data + 2 wires for power supply
 Data transmission rate: 16.6 Kbit/s
 Serial data protocol: CAN (Controller Area Network)
 Short circuit protected (both towards ‘+’ and ‘-‘ of the power supply)
 Bus error indication: 2 short flashes of the indicator LEDs
 Self repairing after 25 seconds when a bus fault occurs
Each dimmer can be given a name of up to 16 characters (max.).
The dimmer module can send following messages:
 Dimmer status
 Module type: dimmer module (including software version)
 dimmer name
 Communication fault counter
 Memory content
The dimmer module can send following commands:
 Turn off LEDs on a control module
 Turn on LEDs on a control module
 Make LEDs flash slowly or fast on a control module
The dimmer module can receive following commands:
 The status of a pushbutton module
 The status of a slider button
The dimmer module can receive following commands:
 Set dimmer value
 Return to last used dimming value
 Stop dimming
 Start timer
 Forced off
 Cancel forced off
 Forced on
 Cancel forced on
 Suppress
 Cancel suppress
 Request dimmer status
 Request type of module and software version
 Request communication fault counter
 Request dimmer name
 Request memory content
 Overwrite memory content
 Clear pushbutton indication LED