Johnson Controls F4-XPM Series Installation Manual page 16

Important: Disconnect all power sources to
the expansion module before removing cover
and changing the position of any jumper on the
expansion module. Failure to disconnect power
before changing a jumper can result in damage to
the expansion module and void any warranties.
The expansion module 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 expansion module 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 9: XPM with cover removed showing EOL switch and
jumper positions (XPM09090 model shown)
Setting the End-of-Line (EOL) switch
About this task:
Each XPM expansion module has an EOL switch, which,
when set to ON (up), sets the expansion module as a
terminating device on the bus. The default EOL switch
position is OFF (down).
Figure 10: End-of-Line switch positions
16 F4-XPM Expansion Modules Installation Guide
To set the EOL switch on an expansion module, complete
the following steps:
1. Determine the physical location of the expansion
module on the SA or FC bus.
2. Determine if the expansion module must be set as
a terminating device on the bus.
Note: SA and FC buses have different EOL
termination rules. For detailed information
about EOL termination rules and EOL switch
settings, refer to the FX-PC Series Controllers
MS/TP Communications Bus Technical Bulletin
(LIT-12011670).
3. If the expansion module is a terminating device
on the FC bus, set the EOL switch to ON. If the
expansion module is not a terminating device on
the bus, set the EOL switch to Off.
When an expansion module is connected to
power with its EOL switch set to ON, the amber
EOL LED on the controller cover is illuminated.
Setting the UI current loop jumpers
Risk of Electric Shock:
Disconnect supply power to the expansion module
before attempting to adjust the UI current loop
jumpers. Failure to disconnect the supply power may
result in electric shock.
ATTENTION
Mise En Garde: Risque de décharge électrique:
Débrancher l'alimentation de l'controller avant tout
réglage du UI current loop jumpers. Le non-respect de
cette précaution risque de provoquer une décharge
électrique.
The UI current loop jumpers are on the circuit board
under the expansion module cover near the UI terminals
(Figure 9). When a UI is defined (in the system software)
as a 4-20 mA Analog Input, set the UI's current loop
jumper to the Enabled position (Figure 11).
CAUTION