A-9
Appendix 5. Troubleshooting
Simple troubleshooting methods for the use of A1S64TC are described in this
section.
Refer to the PC CPU User’s Manual for the troubleshooting regarding the PC
CPU.
Appendix 5.1 Handling the A1S64TC errors
The following table shows the processing details of the A1S64TC when an error
occurs with the A1S64TC or PC CPU, or the PC CPU is changed from RUN to
STOP.
Processing details
Output status setting when in the setting
mode (buffer memory address : A9)
Status
PID stop
PID continue
When an
A1S64TCTT
error occurs
When an error which
continues operations
occurs such as write
error
The operation is continued with data before the
write that caused the write error at the buffer
memory address, and external output is per-
formed.
During reset of PC CPU
When an error which
stops the PC CPU op-
erations occurs
Stops operation and turns off external output.
When PC
CPU error
occurs
When an error which
continues the PC CPU
operations occurs
Continues operation and performs external out-
put.
PC CPU RUN
→
STOP
When the remote I/O station has a link
error (when installed to a remote I/O sta-
tion)
Stops operation and
turns off the external
output.
Continues operation
and performs external
output.
!
DANGER
l
Take sufficient caution when setting the PID continue flag which controls
external output.
l
Erroneous output may be made due to the output element or internal
circuit malfunction.
For output signals that may cause significant damage, configure a circuit
which monitors them externally.
