Table 6: SA/FC Bus Device Address Descriptions
Use on Description
Device
Address
Reserved addresses for wired slave devices
(not for use on controllers).
Note:
FX-PCX 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 controllers on
wireless
FC Buses only
.
Note:
Do
not
connect a 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.
Figure 10: FX-PCX47 with 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. See
for the EOL switch location. The
default EOL switch position is Off.
Figure 11: End-of-Line Switch Positions
To set the EOL switch on a controller:
1. Determine the physical location of the controller on
the SA or FC bus.
2. Determine if the 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
FX-PC
Series Controllers MS/TP Communications
Bus Technical Bulletin (LIT-12011670)
or
MS/TP Communications Bus for BCM System
Technical Bulletin (LIT-12011908)
for detailed
information regarding EOL termination rules
and EOL switch settings on SA and FC buses.
3. If the controller is a terminating device on the FC bus,
set the EOL switch to ON. If the controller is not a
terminating device on the bus, set the EOL switch to
Off.
When a controller is connected to power with its EOL
switch set to ON, the amber EOL LED on the
controller cover is lit.
17
FX-PCX47 Expansion Input/Output Module Installation Instructions
