Bailey Infi 90 IMDSO01, Instruction

Page: 29 / 45

TROUBLESHOOTING
CONTROL MODULE ERRORS
5 - 2 I-E96-310B
®
Fuse Status LED
The fuse status LED has two possible states to indicate the
condition of the digital output fuses. When the fuse status LED
is on (illuminated red), one or more of the fuses are faulty.
When the fuse status LED is off (not illuminated), all output
fuses are functioning properly. Refer to the repair/replacement
procedures section for detailed information about replacing
fuses.
CONTROL MODULE ERRORS
The control module performs status checks on the DSO mod-
ule. If this status check finds the status of the DSO module
bad, the control module will report the bad condition to the
operator interface. If the I/O expander bus address of the I/O
module does not match the address configured in the control
module function block configuration, the control module gen-
erates a
MISSING I/O MODULE error. If the I/O expander bus is
not connected between the control module and the I/O mod-
ule, the control module generates a
MISSING I/O MODULE
error.
EDGE CONNECTORS
Tables 5-2 , 5-2 , and 5-2 list the DSO edge connector pin
assignments.
Off
(continued)
I/O module not
responding
(continued)
Control module in
configure mode Put control module into execute mode
Control module config-
uration not correct Verify function code 83 is in the control
module configuration
No power to I/O module I/O module not
completely inserted in
module mounting unit Verify I/O module is completely
inserted in the module mounting unit
(faceplate flush with module mounting
unit and latching screws in the locked
position)
Red I/O expander bus fault
timer error (time-out con-
dition) I/O expander bus clock
failure Verify the control module is operating
properly
Control module bad Replace control module
Bad I/O module Replace I/O module
Dipshunts not installed
between control
module and I/O module Verify dipshunt is properly installed in
the I/O expander bus socket on the
module mounting unit backplane
between the control module and the
I/O module
NOTE: Replace the DSO module if the corrective actions listed in this table do not correct the problem.
Table 5-1. Module Status LED Error Indications and Corrective Actions
(continued)
LED State Error Indication Probable Cause Corrective Action