Toshiba T2N User Manual Page 98

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  • TROUBLESHOOTING
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6.Troubleshooting
Users manual 83
When the T2N CPU has detected a problem through self-diagnosis, it registers in
the Event History Table one of the error messages (and associated information)
shown in the Table on the following pages. When the details of the problem are
such that it is not possible to continue operation, the CPU switches all the outputs to
OFF, and stops the operation. (Error Down)
The latest 30 error messages and the times of their occurrence are stored in the
Event History Table, and these can be displayed on the programmer. The times
when any error were occured, can be recorded while the RAM and calendar are
maintained by a capacitor and battery in the T2N. (Power supply ON/OFF can
also be registered)
When the T2N system has been stopped by Error Down, first connect the
programmer and make it display the Event History Table, then check the details
of the error.
The following is the procedure for making the programmer display the Event
History.
(1) Connect the T2N CPU module and the programmer (T-PDS) by a dedicated
cable.
(2) Switch ON the power supply of the programmer (T-PDS). (The power supply
of the T2N system should also be ON)
(3) Start up T-PDS by keying-in TPDS [Enter] from the programmer (T-PDS).
(4) If some key (any key) is pressed, the T-PDS initial menu screen will be
displayed. At this time, Receive Time Out should not be displayed.
(5) In this state, if S and E are keyed-in, the Event History will be displayed.
(Example of Event History display screen)
*)The Event History can be registered even if initial set of the calendar is not
executed. In this case, the Date and Time displays will be shown as
??-??-?? ??:??:??.
6.8
List of Items for Self-
Diagnostic Check
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