Latch mode (8 of 1 bit each), Analog/digital output mode (8 of 1 bit each) – Rockwell Automation 1794-OF8IH FLEX Isolated Input/Output HART Analog Modules User Manual

Page 79

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Publication 1794-UM065B-EN-E - September 2010

1794-IF8IH and 1794-OF8IH Configuration 67

Latch Mode (8 of 1 bit each)

Latch Mode determines channel operation under wire off/lead break fault
conditions. Channel fault detection occurs on a continuous basis. If a fault is
detected, the channel fault alarm is set (if Fault Mode is enabled).

If latch is ON the fault is latched until a Global Reset is issued at which time
the fault is reset.

If latch is OFF the channel reports the fault until the fault is corrected. Upon
correction the fault is reset.

Range: 0=OFF, 1=ON
Default: 0

Analog/Digital Output Normal and Fault State Operation

Analog/Digital Output Mode (8 of 1 bit each)

Selects if the channel acts as a normal analog output or as a switched digital
output.

Reset

Hold Last

MIN Range

MAX Range

Hold Last

Fault State Value

Normal State

Value

Fault State

Value

Fault

Latch

Mode

100 ms

Filter

Blink

Timer

Reset

Output Mode

(Analog/Digital)

45287

FAULT_ALARM_0

FAULT_LED_0

CHANNEL_0

GLOBAL_RESET

LATCH_MODE_0

FAULT_MODE_0

SHRT_CRKT_0

LB_0

LOCAL_FAULT_MODE_0

PROG/RUN (EDT word Bit 15)

FAULT (EDT word Bit 14)

BUS_COM_FAULT, other internal module faults

ANALOG_DIGITAL_MODE_0

ANALOG_FAULT_STATE_0

DIGITAL_FAULT_STATE_0

OUT_0

ANALOG_FAULT_STATE_VALUE_0

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