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VELBUS INSTALLATION GUIDE
5 CONNECTING THE MODULES
TERMINATORS
Each Velbus module has a terminator that is open on delivery. In a normal
Velbus system two terminators should be closed, ideally at the extreme ends
of the installation. Usually a terminator is closed somewhere in the first
electrical cabinet and another one at the end of (more or less) the longest
cable. This is done simply by closing the circuit between the two header pins
on a module; a standard jumper is supplied for this purpose. (Some modules
have a switch instead of a jumper, putting the switch on "1" closes the
terminator.)
It is best to note where these terminators are closed, given that they may be
hidden later on in the wall (or cabinet). In Velbuslink a terminator icon
can
be manually set next to the modules with closed terminators. (Note that for
most modules this information is not stored in the modules themselves, but
only in the Velbuslink project file on your PC).
ADDRESSES
Velbus modules must each have a unique 8 bit address, meaning that a
2
maximum of 253 devices
can be on any single Velbus installation. In the
configuration software Velbuslink this address can be represented
hexadecimally (00-FF) or decimally (0-255).
Addresses 00 and FF (hexadecimally), or 0 and 255 (decimally) are reserved
2
255 minus two (0 and 255) which are reserved addresses
©2015 Velbus
22
www.velbus.eu
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