ProcessLogix and ControlLogix System Redundancy Module 25
Publication
1757-IN092E-EN-P - November 2007
Health Status Indicators
The Health status indicator reveals if power has been applied to a module and
if it is operating correctly.
Inter-1757-SRM Module Communication Status Indicator
The Inter-1757-SRM module communication status indicator indicates
activity on the Inter-1757-SRM module communication link.
Status Conditions
Off No power has been applied to the 1757-SRM module.
Solid red • The module is conducting a self test while it is being started.
• The 1757-SRM module has experienced a critical failure.
Flashing red • The 1757-SRM module is experiencing an NVS update.
• The 1757-SRM module has experienced a noncritical failure.
• The 1757-SRM module has been configured improperly.
Solid green The 1757-SRM module is operating normally.
Flashing green The 1757-SRM module is operating normally but is not communicating
with other modules.
Status Conditions
Off • No power has been applied to the 1757-SRM module.
• There is no Inter-1757-SRM module communication activity.
Red < 1 second The 1757-SRM module has been started and has established partner
communication.
Solid red The 1757-SRM module has experienced a critical communication
failure.
Flashing Green • Communication activity is present.
• Sampled every 250 ms.
Allen-Bradley Parts
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