8.1 Troubleshooting Procedure
CAUTION 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.
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:
PWR (power) LED
Lit
RUN LED
Lit
User program
Normal operation
Input operation
Normal 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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