Chapter 8 Ras Function; Led Indication; I/O Module Status; Operation In The Event Of I/O Module Abnormality - Toshiba V Series User Manual

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Chapter 8 RAS Function

Describes the FL654's RAS function.

The front panel of the FL654 module has LED indicators. The indication of these LED

indicators allows the module status to be identified.

In the normal state, the "PER" LED goes off, while the other LEDs are all lit (green).

For more information on this, see Chapter 3.

For LED indication in the event of module down, see 8.5, LED Indication in the Event of

Module Down.

The statuses of the healthy counter and each I/O module, indicating that I/O module

input/output is performed normally, are sent to the first 4 words of the talker area of the

FL654. The high-level controller can see the statuses of the FL654 module and connected

I/O modules on the basis of these status information.

For more information on this, see Chapter 7.

The FL654 checks whether the I/O modules are normal or abnormal each time input/output

cycle is complete. If any I/O module is detected to be faulty, the FL654 stops input to or

output from such an I/O module and sets the noted module status to abnormal.

However, the FL654 continuously performs inputs/outputs with respect to the remaining

normal I/O modules.

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