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 the 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
(Figure 3) 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-PCG 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 Figure 10 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 FC bus.
2. Determine if the controller must be set as a
terminating device on the bus.
Note: Refer to the FX-PC Series Controllers MS/TP
Communications Bus Technical Bulletin
(LIT-12011670) or to the MS/TP
Communications Bus for BCM System
Technical Bulletin (LIT-12011908) for detailed
information about EOL termination rules and
EOL switch settings on FC buses.
Refer to the N2 Communications Bus Technical
Bulletin (LIT-636018) for detailed information about
EOL termination rules and EOL switch settings on N2
buses.
3. If the controller is a terminating device on the 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 an FX-PC controller is connected to power with
its EOL switch set to ON, the amber EOL LED on the
controller cover is lit.
20FX-PCG16 General Purpose Programmable Controller Installation Instructions
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