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Overview of Quantum Hot Standby
840 USE 106 00 January 2003 19
LED Display The following illustration shows five status indicators on the face of each CHS 110
module.
The following table shows the five status indicators.
Error messages are discussed in detail in
Com Act Error Patterns, p. 209
.
Indicator Color Message
Ready Green If steady, power is being supplied to the module and it has
passed initial internal diagnostic tests. If blinking, module is
trying to recover from an interface error.
Com Act Green If steady, CHS 110 modules are communicating. If blinking, an
error has been detected.
Primary Green Module is Primary controller.
Com Err Red Module is retrying CHS communications or CHS
communications failure has been detected.
Standby Amber If steady, module is Standby controller, and is ready to assume
Primary role if needed. If blinking, program update is in
progress.
140
CHS 110 00
HOT STANDBY
Active
Ready Fault
Run Bal Low
Pwr ok
Modbus Com Err
Modbus! Error A
Com Act Error B
Primary
Mem Prt Standby