Manual

Troubleshooting
Chapter 5
5-3
The numeric displays are used to indicate hardware fault conditions. When
the fault indicator is lit, the left display will show a number indicating the
type of hardware fault. Table 5.C gives a description of the faults.
Table 5.C
Hardware
Faults
This number: Indicates this fault: Meaning
Processor Fault A hardware fault was detected in the processor.
This is a major fault. Return the Communications
Controller for servicing.
Flash EPROM Fault The checksum stored in the Flash EPROM does not
match the actual checksum for it. This indicates bad
cells in the Flash EPROM.
This is a major fault. Return the Communications
Controller for servicing.
RAM Fault The static RAM cannot be reliably written to.
This is a major fault. Return the Communications
Controller for servicing.
Stuck Button Detected One or more push buttons are stuck on. This could be
caused by a mechanical problem with the buttons, or
by an object pressing on the push buttons.
If the cause is mechanical, the Communications
Controller should be returned for servicing. Otherwise,
remove the pressure from the push buttons to clear the
fault condition.
The Communications Controller will continue to
communicate when this fault is detected, but
configuration will not be possible.
Flash EPROM Write
Fault
The Flash EPROM could not be burned correctly
during download of new firmware.
This is a major fault. Return the Communications
Controller for servicing.
Serial EEPROM Major
Fault
The Smart Transmitter Interface was unable to write
the new configuration to the EEPROM.
This is a major fault. Return the Communications
Controller for servicing.
Serial EEPROM Minor
Fault
On power up, the Smart Transmitter Interface detected
invalid configuration data in the EEPROM. The Smart
Transmitter Interface recovered by writing the factory
default configuration to the EEPROM. You must power
the module off and back on, and then reconfigure it.
This is not a major fault, but if the problem persists,
return the Communications Controller for servicing.
Power Failure The power supply voltage is below the minimum rating
for the Communications Controller.
The Communications Controller will continue to
communicate when this fault is detected, but
configuration will not be possible.
Remote I/O Fault A hardware fault was detected in the Remote I/O
Interface. This is a major fault. Return the
Communications Controller for servicing.
Interpreting the
Communications Controller
Numeric Displays