Publication 1794-UM063A-EN-P - March 2006
6-2 Troubleshoot the FLEX I/O Analog I/O Modules
1794-OE8H Module
The 1794-OE8H module has one power indicator that is on when power is
applied to the module, and one status indicator for each input.
Repair
This module is not field repairable. Any attempt to open this module will void
the warranty. If repair is necessary, return this module to the factory.
Chapter Summary
In this chapter you learned how to troubleshoot the FLEX I/O analog
modules. Refer to publications 1794-IN108 and 1794-IN109 for complete
specifications for your module.
Table 6.2 1794-OE8H Status Indicators
Indicator Color State Meaning
Status Red On At power up – Channel 0 indicator lights at powerup until
all internal diagnostics are checked. After successful
powerup, the indicator goes off if no fault is present.
After successful powerup – Indicates a critical fault
(diagnostic failure, etc.)
Blinking (when
faults are
enabled, and bit
set)
Indicates a noncritical channel fault
Yellow On/blinking HART device was found on the associated channel (when
configured)
Power — Off Module not powered
Green On Module receiving power
Blinking No flexbus communication
41442H
A B C
1794- OE8H
Allen-Bradley
B
-
A
OUT 1OUT 0 OUT 2 P WROUT 7OUT 6OUT 5OUT 4OUT 3
4
8 CHANNEL ANALOG OUTPUT
I/O
A = Status indicators
B = Insertable labels for writing individual input
designations
C = Power indicator
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