Remote alarm (8 of 1 bit each), Loop alarm (8 of 1 bit each), Module diagnostic status (1 of 8 bits) – Rockwell Automation 1794-OF8IH FLEX Isolated Input/Output HART Analog Modules User Manual

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Publication 1794-UM065B-EN-E - September 2010

1794-IF8IH and 1794-OF8IH Configuration 49

Remote Alarm (8 of 1 bit each)

Alarm from remote transmitter, indicating transmitter difficulties, sensor
difficulties or loop to the sensor is open. If no transmitter is present this alarm
can be utilized as a Low Low and/or High High Alarm. This is accomplished
programmatically by "ANDing" together the Remote Alarm and the Low
Alarm for a Low Low Alarm and the Remote Alarm and the High Alarm for a
High High Alarm.

This alarm is active for both a high indication and low indication.
Alarm thresholds are adjustable by the Remote High High and Remote Low
Low Alarm Limit parameters for Data Formats 0…7.
Alarm thresholds are preset for Data Formats 8…15.

Range: 0=normal, 1=fault detected
Data Table Reference: rem alarm, Status Word 1, bits 8…15

Loop Alarm (8 of 1 bit each)

Alarm indicating the loop to the transmitter, or, if there is no transmitter, the
loop is open or shorted. When active, this alarm triggers at 2 mA and 22 mA
for open and short respectively.

Range: 0=normal, 1=fault detected.
Data Table Reference: local fault, Status Word 1, bits 0…7

Module Diagnostic Status (1 of 8 bits)

Response from module on its condition.

Diagnostic Status Value: 0

Channel

Failure

0x00

All

No Errors (default)

0x10

Channel 0