Siemens Simatic PCS7 Function Manual page 128

Operator control and monitoring
6.10 Maintenance status of redundant components
Maintenance status
Redundant component
Good
At least one process value is being simulated Unknown/untested
At least one process value is being simulated Component passivated
At least one process value is being simulated Out of service
At least one process value is being simulated At least one process value is
Local operation
Maintenance required
Maintenance demanded
Maintenance alarm
At least one process value is being simulated. Configuration change
Local operation
Local operation
Local operation
Local operation
Local operation
Local operation
Maintenance required
Maintenance demanded
Maintenance alarm
Local operation
Maintenance required
Maintenance required
Maintenance required
128
Component A
Good
being simulated
Local operation
Maintenance required
Maintenance demanded
Maintenance alarm
Good
Unknown/untested
Component passivated
Out of service
At least one process value is
being simulated
Local operation
Maintenance required
Maintenance demanded
Maintenance alarm
Configuration change
Good
Unknown/untested
Component passivated
Function Manual, 03/2016, A5E36187641-AA
Component B
At least one process value is
being simulated.
At least one process value is
being simulated.
At least one process value is
being simulated.
At least one process value is
being simulated.
At least one process value is
being simulated.
At least one process value is
being simulated.
At least one process value is
being simulated.
At least one process value is
being simulated.
At least one process value is
being simulated.
At least one process value is
being simulated.
Local operation
Local operation
Local operation
Local operation
Local operation
Local operation
Local operation
Local operation
Local operation
Local operation
Maintenance required
Maintenance required
Maintenance required
Maintenance Station