Communication and system time startup fault scenarios
Communications Faults
240 Experion C300 Controller User's Guide R301.1
Honeywell 11/06
hardware watchdog timer circuit, the controller would not be protected from corrupt
software execution. Therefore, a run-time diagnostic check verifies the watchdog timer
hardware integrity. If a fault is detected in the watchdog timer hardware circuit, a soft
failure condition occurs. See Hardware Watchdog Timer for more information.
The failed controller module does not contain any diagnostic data, although the
redundant partner module may contain some useful information.
Communications Faults
The System Management Display software application provides the means to configure
and monitor FTE nodes in Experion. The FTE Status Server and FTE Auxiliary display
includes detailed information on FTE links monitored by the FTE Provider. See the
Fault Tolerant Ethernet Status Display User’s Guide for more details.
Communication and system time startup fault scenarios
The tables in this section help to provide guidance for determining the cause of abnormal
startup conditions in the C300 Controller. These conditions may occur when the
controller…
• Cannot establish normal communication on the FTE network to which it is resident
• Cannot obtain its network address from the system’s bootP server
• Cannot obtain system time from the time source configured for the domain on which
it resides,
• Finds that CDA services are not available.
Various indications on the controller’s faceplate display or the state of the Control
Builder icon that represents the C300 Controller (if the controller had been loaded
previously) are described that point to a abnormal condition.
There are six tables that detail the abnormal conditions for both redundant and non-
redudnant controller configurations and whether or not the controller memory has been
retained via battery backup.
Corrective actions for resolving these conditions are found below the tables, (see Notes
).
Non-redundant C300 Controller with no Memory Retention
Controller Faceplate Problem
C300 Block
Time Source
Station Alarm Resolve
Status
Blinking
Red
No communication on FTE
network
Internal C300 OFFNET Note 1
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