Led Display - Toshiba V Series User Manual

Chapter 8 Error Handling

8.1 LED Display

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The EN311 indicates its module status in the RUN, STBY, ACC, and EXT.POWER
LEDs.
Table 8-1 lists the states indicated by the RUN and STBY LEDs. Note that the EN311
operating mode can be determined by the combination of the RUN and STBY LED
display states as listed in Table 8-2.
User programs should read out and verify the down information error codes listed in
Table 8-2 using the MREAD instruction issued for the down information in the S controller
interface buffer (see section 7.2, "Down Information").
Modules that fail (go to the down state) should be replaced.
Table 8-1 States Indicated by the RUN and STBY LEDs
LED display
RUN(Run) Indicates the module normal/error (down mode) status.
On
Off
STBY(Standby) Indicates the module operating mode when the module is operating
normally and an abbreviated error indication when the module is down.
On
Off
Blinking
Description
Module normal
Module error (down)
Standby (normal mode)
Run (normal mode)/Self-diagnostics error (down mode)
Module went down during operation (down mode)
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