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DETAILED CASE AND MODULE DESCRIPTION
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8-26
SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version: B.1
Table 8-12 RIO Module, A80413 User Interface
Component
Function
OUT 1 LED
Lights red when vital Output 1 is energized.
OUT 2 LED
Lights red when vital Output 2 is energized.
OUT 3 LED
Lights red when vital Output 3 is energized.
OUT 4 LED
Lights red when vital Output 4 is energized.
IN 1 LED
Lights red when vital Input 1 is energized.
IN 2 LED
Lights red when vital Input 2 is energized.
IN 3 LED
Lights red when vital Input 3 is energized.
IN 4 LED
Lights red when vital Input 4 is energized.
HEALTH LED
Lights yellow. Flashes approximately 1 pulse per second
when a module is fully operational, 2 pulses per second when
a module is not communicating with the CPU, and
approximately 8 pulses per second when a fault is detected
within the module.
POWER LED
Lights green to indicate that power is applied to the RIO
module.
DIAG
Diagnostic Serial Port
9-pin diagnostic serial port for RIO module.
Table 8-13 Diagnosing RIO Module Problems
The following table shows the diagnostic messages generated by the RIO Module
Diag Display /
Description
Cause
Remedy
No Communications
(Diag4017)
No Communications indicates that
the RIO card is not communicating
with the CPU
a) Check that there is a module in the
appropriate slot
b) Check that the power light on the module
is on
c) Check to see if the module is continuously
rebooting, (health LED goes off for 10s, then
on for 10s), if it is, then replace the module
d) If the module is not continuously rebooting,
then check to see if the module is
unconfigured (health LED is flashing fast). If
only this module is UCFG, then replace it, if
all modules are unconfigured then replace the
CPU