Troubleshooting Procedure - Toshiba V200 Series User Manual

8.1 Troubleshooting Procedure

CAUTION
If trouble occurs, determine whether the cause lies in the mechanical side or in the control system (PLC) side. A
problem may cause a secondary problem, therefore, try to determine the cause of trouble by considering the whole
system.
If the problem is found in the PLC CPU model, check the following points:
Normal operation
Normal operation
1. Pay special attention during the troubleshooting to minimize the risk of electrical shock.
2. Turn off power immediately if the V200 or related equipment is emitting smoke or
odor. Operation under such situation can cause fire or electrical shock.
3. Turn off power before removing or replacing units, modules, terminal blocks or wires.
Failure to do so can cause electrical shock or damage to the PLC and related
equipment.
4. Contact Toshiba for repair/replacement if the V200 or related equipment fails.
Toshiba will not guarantee proper operation nor safety for unauthorized repairs.
PW R (power) LED
Lit
RUN LED
Lit
User program
Input operation
Output operation
Follow the procedure in
Not lit
Power supply check
Follow the procedure in
Not lit
CPU check
Follow the procedure in
Not normal
Program check
Follow the procedure in
Not normal
Input check
Follow the procedure in
Not normal
Output check
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