Allen-Bradley Flex I/O, Руководство по установке

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12 FLEX I/O Digital Input and Output Modules w/ Diagnostics
Publication 1794-IN096C-EN-P - August 2015
Diagnostics
(See configuration information below for location of diagnostic bits.) Note: Each unused
sensor port requires a dummy resistor to mask the channel diagnostic function.
Diagnostic Functions for the 1794-IB16D
Ext.
Power Wiring Input
Status Channe
l LED
Status Open
Wire
Error
Bit Short
Error
Bit Rev.
Error
Bit Module
Error
Bit/LED
OFF Open Off Off 0 0 0 0/OFF
On Off 0 0 0 0/OFF
Short Off Off 0 0 0 0/OFF
On Off 0 0 0 0/OFF
Normal Off Off 0 0 0 0/OFF
On Off 0 0 0 0/OFF
ON Open Off RED 1 0 0 1/RED
On RED/YEL 1 0 0 1/RED
Short Off RED 0 1 0 1/RED
On RED/YEL 0 1 0 1/RED
Normal Off Off 0 0 0 0/OFF
On YEL 0 0 0 0/OFF
REV Open Off Off 0 0 1 1/RED
On Off 0 0 1 1/RED
Short Off Off 0 0 1 1/RED
On Off 0 0 1 1/RED
Normal Off Off 0 0 1 1/RED
On Off 0 0 1 1/RED
The module monitors each sensor-power port for current and voltage. It turns on the channel red LED
and sets (1) the error bit when 1) the module detects a short circuit (no voltage at the sensor-port), and 2)
the module detects an open wire ( no current at the sensor-port).