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MACH-Air™ VAV Controller
Networking
2002 Reliable Controls™ Corporation
End-of-Line Termination
On all EIA-485 networks it is necessary to add end-of-line
(EOL) terminators to prevent reflected noise returning into the
network. The EOL terminators must be installed on the
controllers at the extremities of the network. To determine
the network extremities, calculate the maximum network
length between any two controllers. The controllers at the
extremities must be terminated.
To terminate a MACH-Air™
VAV controller, remove the
black ABS cover and install
EOL jumpers J15 and J16. The
jumpers are located to the left
of the network protection
fuses.
If the network is not terminated
correctly, the controller may fail to
network properly.
End-of-Line Jumpers