Toshiba 6F3B0253 user manual Self-diagnostic items

6F3B0253

10.Troubleshooting

10.2Self-diagnostic items

If an error is detected by the self-diagnostic check of the T1-16S CPU, the error messages and the related information shown on the following pages will be recorded in the T1-16S’s event history table. If the error is severe and continuation of operation is not possible, the T1-16S turns OFF all outputs and stops the operation (ERROR mode).

The latest 15 error messages are stored in the event history table. This event history table can be displayed on the programming tool. (Power ON/OFF is also registered)

If the T1-16S has entered into ERROR mode, connect the programming tool to the T1- 16S to confirm the error message in the event history table. This information is important to recover from a trouble. For the key operations on the programming tool to display the event history table, refer to the separate manual for the programming tool.

(An example of the event history)

		< Event History>
	Date	Time	Event	Count	Info 1	Info 2	Info 3	Mode
1.	98-02-21	16:48:01	I/O no answer	3	#00-04			RUN	Down
2.	98-02-21	15:55:26	System power on	1				INIT.
3.	98-02-21	12:03:34	System power off	1				RUN
4.	98-01-15	09:27:12	System power on	1				INIT.
5.	98-01-14	19:11:43	System power off	1				HALT
6.	98-01-14	10:39:11	No END/IRET error	3	M-001	H0024		HALT	Down

In the event history table, No.1 message indicates the latest event recorded. Each column shows the following information.

Date: The date when the error has detected (Enhanced model only)

Time: The time when the error has detected (Enhanced model only)

Event: Error message

Count: Number of times the error has detected by retry action

Info n: Related information to the error detected

Mode: T1-16S’s operation mode in which the error has detected (INIT. means the power-up initialization)

Down: Shows the T1-16S has entered into ERROR mode by the error detected

If the T1-16S is in the ERROR mode, operations to correct the program are not accepted.

In this case, execute the Error reset operation by the programming tool to return the HALT mode before starting the correction operation.

288 T1-16S User’s Manual