Velleman VMB8PBU - Manual (Page 4)

4 8-channel pushbutton module | VMB8PBU – ed.1
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 pushbutton can be given a name of up to 16 characters (max.).
The module can send following messages:
• Pushbutton pushed, pushed long or released
• Module status
• Module type: 8-channel pushbutton module (including software version)
• Pushbutton names
• Communication fault counter
• Memory content
The module can receive following commands:
• Switch off indicator LEDs
• Switch on indicator LEDs
• Slowly flashing of the indicator LEDs
• Fast flashing of the indicator LEDs
• Very fast flashing of the indicator LEDs
• Request status
• Request module type and software version
• Request pushbutton names
• Request memory content
• Overwrite memory content
• Request communication fault counter