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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 fingernails under the two cover
lift tabs (Figure 1) 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 onto 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 controller as a terminating device
on the bus. The default EOL switch position is OFF.
Figure 10: 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
controller on the FC bus.
2. Determine if the controller must be set as a
terminating device on the bus.
Note:
For detailed information regarding EOL
termination rules and EOL switch settings on
FC buses, refer to the
MS/TP Communications
Bus Technical Bulletin (LIT-12011034)
.
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.
Commissioning
You commission expansion modules with the
Controller Configuration Tool (CCT) software,
using NxE Passthru, Bluetooth (with BTCVT),
through Mobile Access Portal (MAP) Gateway at
version 4.2 or above. Refer to the
Controller Tool
Help (LIT-12011147)
for detailed information on
commissioning expansion modules.
Note:
The MAP Gateway serves as a
replacement for the BTCVT, which is no longer
available for purchase, but continues to be
supported.
Troubleshooting
Observe the Status LEDs on the front of the
expansion module. Table 7 provides LED status
indicator information for troubleshooting the
expansion module.
LED status and states
Table 7: Status LEDs and description of LED states
LED label
LED color
Normal LED state Description of LED states
POWER
Green
On Steady
Off Steady = No Supply Power. The expansion module’s polyswitch/resettable
fuse may be open. Check output wiring for short circuits and cycle power to
expansion module.
On Steady = Power Connected
FAULT
Red
Off Steady
Off Steady = No Faults
On Steady = Device Fault
Blink - 2 Hz = Download or Startup in progress: not ready for normal operation
SA/FC BUS
Green
Blink - 2 Hz
Blink - 2 Hz = Data Transmission (normal communication)
Off Steady = No Data Transmission (N/A - auto baud not supported)
On Steady = Communication lost; waiting to join communication ring
IOM3731-0A Expansion Input/Output Installation Guide
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