Honeywell Experion PKS User Manual page 141

Tip
You can view the diagnosis and extended diagnosis of the devices online. For more information, see "Viewing the
slave device diagnosis" on page 100 and "Viewing the slave device's extended diagnosis" on page 101 respectively.
Alarm processing
The following alarms are reported by the Siemens ET200M DSB when the PDC state is "Configured,"
"Opening PDC delivery," or "Connected."
• Module fault on Slot n - This alarm is reported when the diagnostic data indicates failure in the module in
slot "n." When this alarm is reported, the Trip Value field in the alarm summary displays the module status
reported in the extended diagnostics. However, this alarm returns to normal after fresh diagnostics are
received for the slot and the diagnostics does not indicate a module failure. For each faulty slot, an alarm is
reported.
• Channel errors of Module on Slot n - This alarm is reported when the diagnostic data indicates a fault in
one ore more channels of a module configured in the slot "n." When this alarm is reported, the Trip Value
field in the alarm summary displays the faulty channel. However, this alarm returns to normal after fresh
diagnostics are received for the slot and the diagnostics does not indicate channel failure. For each faulty
slot, an alarm is reported.
Attention
In a scenario where both module failure and channel failure conditions exist, the "Channel errors of Module on Slot n"
returns to normal and only the "Module fault on Slot n" alarm is reported.
The following alarm is reported by the Siemens ET200M DSB when the PDC state is other than "Configured,"
"Opening PDC delivery," or "Connected."
• Rack Fault on module - This alarm is reported when the extended diagnostics data indicates a rack failure.
When this alarm is reported, the Trip Value field in the alarm summary displays the faulty module number.
For each faulty module, an alarm is reported. For example, if there are three faulty modules, three alarms are
reported. This alarm returns to normal after fresh diagnostics are received for the slot and the diagnostics
does not indicate a rack failure.
7 DEVICE SUPPORT BLOCK (DSB)
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