KMC Controls
Revision E
Installing the controller
Connecting to an MS/TP network
10
See Application Note AN0404A,
Planning BACnet Networks
for addional information
about installing controllers.
Note
The BAC-7401 EIA–485 terminals are labeled
-A
,
+B
and
S
. The
S
terminal is
provided as a connecting point for the shield. The terminal is not connected to
the ground of the controller. When connecting to controllers from other
manufacturers, verify the shield connection is not connected to ground.
End of line termination switches
The controllers on the physical ends of the EIA-485 wiring segment must have end-
of-line termination installed for proper network operation. Set the end-of-line
termination to
On
using the
EOL
switches.
Illustration 2-4 MS/TP network wiring
S
+B
-A
S
+B
-A
S
+B
-A
S
+B
-A
Illustration 2-5 End of line termination
Set end-of-line termination to
On
in these controllers only.
