Velleman VMB1RS - Manual (Page 5)

Velbus manual VMB1RS– edition 1 – rev.1.0
5
USE
Connect the module to the VELBUS system and the computer (see Connexion).
Run a computer programme allowing you to communicate with the VELBUS system. You can also write a
programme of your own.
When powering the module, a ‘Bus active’ and ‘Reception ready’ message will be sent to the computer.
All messages appearing on the VELBUS system will also be sent serially to the computer.
Valid commands generated by the computer will be sent to the module via the COM port.
These commands are placed on the VELBUS system through the serial interface module.
When an excessive amount of commands have been sent in one time, the reception buffer will be filled. This will
be reported to the computer. The computer programme must interrupt the forwarding and wait for a ‘Reception
ready’ message to be able to offer new commands.
If the commands can not be placed correctly on the VELBUS, a bus error will occur and will be forwarded tot the
computer. The serial interface module will auto-restart after 25 seconds and erase the reception buffer.
Velbus forward LED
Velbus reception LED
RS232C forward LED
RS232C reception LED
Velbus power LED
Connection to the computer’s serial port
Termination
12V power supply
-
+
L
H
Velbus