
Publication 1797-6.5.3 - March 2006
7-2 Troubleshoot the FLEX Ex Analog I/O Modules
1797-OE8H Module
The 1797-OE8H module has one power that is on when power is applied to
the module and one status indicator for each input.
Table 7.1 1797-IE8H Status Indicators
Indicator Color State Meaning
Status Red On At cycle power – Channel 0 indicator lights when you
cycle power until all internal diagnostics are checked.
After successful power cycle, the indicator goes off if no
fault is present.
After successful powerup – Indicates a critical fault (for
example, diagnostic failure)
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
1797- OE8
Allen-Bradley
B
-
A
OUT 1OUT 0 OUT 2 PWROUT 7OUT 6OUT 5OUT 4OUT 3
4
8 CHANNEL ANALOG OUTPUT
41442
A B C
A = Status indicators
B = Insertable labels for writing individual input
designations
C = Power indicator
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