Publication 1747-UM005B-EN-P - March 2006
Overview
1-3
LED Indicators
There are eight LED indicators on the front of the module. These LED
indicators are used for module diagnostics and operator interface. The
LED indicators and their descriptions are provided below.
LED Indicators
LED Indicator Status
DH485/RS-232C
DH485/RS-232C
ACT
485
CFG
DF1
FAULT
BA LO W
H/D
F/D
INTERFACE
LED
Color
Status
Indication
ACT
Green
ON
(1)
The module is receiving power from the backplane, is configured properly, and
is placed in Run mode.
Flashing
The module requires configuration or is being configured.
OFF
The module is not receiving power from the backplane. A fault condition
exists.
485
Green
ON
The DH485 port is active on the network.
OFF
The DH485 port is not active on the network or the module is in Configuration
mode.
CFG
Green
Flashing
The CONFIG port is transmitting or receiving signals.
OFF
The CONFIG port is not transmitting or receiving signals.
DF1
Green
Flashing
The DF1 port is transmitting or receiving signals. (The flashing may occur so
rapidly that the LED indicator appears to be on.)
OFF
The DF1 port is not transmitting or receiving signals or the module is in
Configuration mode.
FAULT
Red
ON
A system problem was detected during diagnostics. Cycle power to reset. If it
remains on, contact your Allen-Bradley representative.
OFF
No system problems are detected during diagnostics.
BA LOW
Red
ON
The voltage of the battery that backs up configuration RAM is low. A new
battery is needed.
OFF
The voltage of the battery that backs up configuration RAM is at an
acceptable level.
H/D
Amber
ON
The module is configured for half-duplex DF1 protocol (local or remote).
OFF
The module is not configured for half-duplex DF1 protocol.
F/D
Amber
ON
The module is configured for full-duplex DF1 protocol.
OFF
The module is not configured for full-duplex DF1 protocol.
(1)
Indicates normal operation after the module has been configured.
Summary of Contents for 1747-KE
Page 1: ...DH 485 RS 232C Interface Module Catalog Number 1747 KE User Manual AB Parts ...
Page 4: ...Publication 1747 UM005B EN P March 2006 2 Summary of Changes Notes ...
Page 12: ...Publication 1747 UM005B EN P March 2006 4 Preface ...
Page 26: ...Publication 1747 UM005B EN P March 2006 2 4 Quick Start ...
Page 88: ...Publication 1747 UM005B EN P March 2006 7 4 Interpret the LED Indicators ...
Page 116: ...Publication 1747 UM005B EN P March 2006 8 28 Application Examples ...
Page 120: ...Publication 1747 UM005B EN P March 2006 A 4 Specifications ...
Page 130: ...Publication 1747 UM005B EN P March 2006 C 6 Lithium Battery Replacement Handling and Disposal ...
Page 134: ...Publication 1747 UM005B EN P March 2006 D 4 Interface Module Configuration Worksheets ...
Page 138: ......