The following table describes the FC bus and SA bus
devices addresses for Johnson Controls
®
MS/TP
controllers communications bus applications.
Refer to the
MS/TP Communications Bus Technical Bul-
letin (LIT-12011034)
for more information on con-
troller device addresses and how to set them on
MS/TP buses.
Removing the Controller cover
Important:
Electrostatic discharge can
damage controller components. Use proper
electrostatic discharge precautions during
installation, setup, and servicing to avoid
damaging the controller.
Important:
Disconnect all power sources to
the controller before you remove the cover
and change the position of any jumper on the
controller. Failure to disconnect power before
changing a jumper can result in damage to the
controller and void any warranties.
The controller cover is held in place by four
plastic latches that extend from the base and
snap into slots on the inside of the housing
cover.
To remove the controller cover, complete the
following steps:
1. Place your fingertips under the two cover lift
tabs (
) on the sides
of the housing cover and gently pry the top of
the cover away from the base to release the
cover from the two upper latches.
2. Pivot the top of the cover further to release it
from the lower two latches.
3. Replace the cover by placing it squarely over
the base, and then gently and evenly push the
cover on to the latches until they snap into the
latched position.
Figure 10: Cover removed showing EOL switch and jumper positions
Setting the End-of-Line (EOL) switch
Each controller has an EOL switch, which, when set
to ON, sets the controller as a terminating device on
the bus. The default EOL switch position is OFF.
Figure 11: End-of-Line switch positions
To set the EOL switch on a field controller, complete
the following steps:
1. Determine the physical location of the field
controller on the FC bus.
FAC3613 Advanced Application Field Equipment Controller Installation Guide
18
