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1-4 Chapter 1: Module Overview

User’s Manual Pub. 0300272-01 Rev. A.0

1.5.1 LED Indicators

The 1734 analog HART module uses several LEDs to show operational status. The LEDs

for the module consist of four Red/Green LEDs representing Module Status, Network

Status, and two Output Connection Status LEDs. The status LEDs are defined below:

Table 1-1 (LED Status Indicators)

Indicator

State

Description

Module Status

Off

No power applied to device

Green

Device operating normally

Flashing Green

Device needs commissioning due to

configuration missing, incomplete, or incorrect

Flashing Red

Unrecoverable fault may require device

replacement

Red

Recoverable fault

Flashing

Red/Green

Device is in self-test mode

Network

status

Off

Device is not online:

 Device has not completed dup_MAC_id

test

 Device is not powered. Check module

status indicator

Flashing Green

Device is online but has no connections in the

established state

Green

Device is online and has connections in the

established state

Flashing Red

One or more I/O connections are in timed-out

state

Red

Critical link failure–failed communication

device. Device detected error that prevents it

communicating on the network

Flashing

Red/Green

Communication faulted device–the device has

detected a network access error and is in

communication faulted state

Channel status

Off

Channel not in use (module is in CAL mode)

Solid Green

Normal (channel scanning inputs)

Flashing Green

Channel receiving HART data

Solid Red

No power or major channel fault

Flashing Red

Channel at end of range

Flashing

Red/Green

Hart device error on HART-enabled channel

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 73 74

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