Toshiba Programmable Controller PROSEC T3 - Manual (Page 83)

6. Troubleshooting
6.1
Troubleshooting
procedure
If a trouble occurs, determine whether the cause lies on the
mechanical side or on the control system (PLC) side. A problem
may cause a secondary problem, therefore, try to determine the
cause of the trouble by considering the whole system.
If the problem is found in the T3 or in the T3’s I/O operation, check
the following points:
If the user program operation is
abnormal, follow the procedure in
6.4, Checking the program.
If an abnormalit/ is found in an
input module, follow the procedure
in 6.5, Checking input.
If an abnormality is found in an
output module, follow the procedure
in 6.6, Checldng ou^ut.
If the problem appears temporary and is synchronous with the
operation of the system/equipment, the external environment
(noise, voltage fluctuations, etc.) may have caused it. For details,
follow Section 6.7.
User's manual - Hardware
75