Table 5: SA/FC Bus Device Address Descriptions
Use on Description
Device
Address
Reserved addresses for wired slave devices
(not for use on field controllers).
Note:
Metasys field controllers ship with
switch 128 ON and the remaining
address switches off rendering the
controllers wired slave devices, which
do not operate on MS/TP buses.
0 to 3
(Switch
128 ON)
Valid for MS/TP Master field controllers on
wireless FC Buses only
.
Note:
Do
not
connect a field controller with
switch 128 ON to an active
(
hard-wired
) SA or FC bus. When a
controller with switch 128 ON and a
device address from 4 to 127 is
connected to a wired field bus, the
entire field bus is rendered inoperable
until the controller is disconnected or
switch 128 is set to Off.
4 to 127
(Switch
128 ON)
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 removing cover and
changing the position of any jumper or the
EOL switch on the controller. Failure to
disconnect power before changing a jumper
or EOL switch position 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:
1. Place your fingernails 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.
Setting the
End-of-Line (EOL)
Switch
Each field controller has an EOL switch, which, when set
to ON, sets the field controller as a terminating device on
the bus. See
for the EOL switch location. The
default EOL switch position is Off.
Figure 10: End-of-Line Switch Positions
To set the EOL switch on a field controller:
1. Determine the physical location of the field controller
on the SA or FC bus.
2. Determine if the field controller must be set as a
terminating device on the bus.
Note:
The EOL termination rules for SA buses and
FC buses are different. Refer to the
MS/TP
Communications Bus Technical Bulletin
(LIT-12011034)
for detailed information
regarding EOL termination rules and EOL
switch settings on SA and FC buses.
3. If the field controller is a terminating device on the FC
bus, set the EOL switch to ON . If the field controller
is not a terminating device on the bus, set the EOL
switch to Off.
When a field controller is connected to power with its
EOL switch set to ON, the amber EOL LED on the
controller cover is lit.
Commissioning Field Controllers
You commission
BACnet®
MS/TP field controllers with
the
Controller Configuration Tool (CCT)
software, either
via a Bluetooth
®
Wireless Commissioning Converter, a
ZigBee
™
wireless dongle, or in passthrough mode when
connected to an NAE or NCE. Refer to Controller Tool
Help (LIT-12011147)
for detailed information on
commissioning field controllers.
Troubleshooting Field Controllers
Observe the Status LEDs on the front of the field
controller and see
to troubleshoot the controller.
To troubleshoot an integral or local controller display,
refer to the
DIS1710 Local Controller Display Technical
Bulletin (LIT-12011270)
.
10
IOM3721 Input/Output Module Installation Instructions
