Exhausto VEX100CF Series, Installation Manual

Page: 7 / 20

1.1.2 Termination
The first and last devices on the bus must be terminated. The diagrams below show
two termination examples. See position of jumper JP2 on EXact2 Main Board in
section “Terminal board on EXact2 Main Board”.
If Then See diagram no.
HMI is the only device on
the bus (bus connector
optional) the jumper must be connected
to JP2, which applies a resist-
ance of 120
Ω
1
both buses are used the jumper must not be con-
nected 2
the bus connectors are
not used the jumper must be connected
to JP2 as per diagram 1, which
applies a 120
Ω
resistance
1
1.
2.
3005760-2017-05-03
Connection diagram for supply voltage
and connection box
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