Rockwell Automation 1336T PLC Comm. Adapter, Series B, FRN 2.xx-3.xx - Manual (Page 231)

8–5
Publication 1336 FORCE–5.13 –– September, 1998
Warning Faults
A warning fault has the lowest priority of all types of faults. A
warning fault indicates a condition that if left uncorrected could
result in a soft fault and is designed to annunciate a condition present
in the system. When a warning fault occurs, the drive is not
commanded to stop. Drive operation is not affected, but a fault code
is entered into the fault queue reflecting the condition. You can
recover by initiating a Clear Fault command, but this is not necessary
for continued operation.
Configurable Faults
By using parameter programming, you can configure whether certain
faults are reported as a soft fault, a warning fault, or no fault when
the fault condition is present. You can use parameters 425, 426, 430,
and 431 to configure the faults when you are using RIO
communications. If you want the PLC Communications Adapter
Board to report the fault condition as a soft fault, you need to set the
appropriate bit in parameter 425 for channel A or parameter 430 for
channel B. To have the PLC Communications Adapter Board report
the fault condition as a warning, you need to set the appropriate bit in
parameter 426 for channel A or parameter 431 for channel B and
make sure that the corresponding bit is not set in parameter 425 or
430.
When a fault condition that is specific to RIO communications
occurs, the PLC Communications Adapter Board first checks
parameter 425 or 430. If the bit representing the fault condition is
set, the condition is reported as a soft fault. If the bit is not set, the
PLC Communications Adapter Board then checks parameter 426 or
431. If the corresponding bit is set in 426 or 431 but not set in
parameter 425 or 430, the condition is reported as a warning. If the
bit is not set in either parameter, the PLC Communications Adapter
Board does not report the condition and drive operation continues
unaffected.