Toshiba V Series, User Manual

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6F8C0904
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2.4 LED Display
2
2.4 LED Display
The LEDs on the EN311 front panel indicate the status of the system. These LEDs show
the operating state of the EN311.
The combinations of the RUN LED and the STBY LED indicate the module state (run,
standby or down).
* See section 4.8, "Operating Mode Control Requests", for detailed information on run,
standby and down modes.
Table 2-1 LED Descriptions
LED Description
RUN (Run)
Green Indicates whether or not the module is operating normally.
On . . . . . The module is operating normally.
Off . . . . . A module error occurred.
STBY (Standby)
Red Indicates the operating mode while the module is operating normally or the
outline of the cause when the module is down.
On . . . . . Standby (while operating normally)
Off . . . . . Run (while operating normally)/self-diagnostic error (when the
module is down)
Blinking . The module went down while operating (when the module is
down).
SEND (Send)
Green Indicates whether or not the module is transmitting data.
On . . . . . Data transmission in progress
Off . . . . . No data is being transmitted.
RCV (Receive)
Green Indicates whether or not the module is receiving data from the transmission
line.
On . . . . . Data is present on the transmission line.
Off . . . . . The transmission line is empty.
COL (Collision)
red Indicates whether or not a collision is occurring on the transmission line
during a data transmission.
On . . . . . Collision(s) occurred.
Off . . . . . No collisions occurred.
ACC (Access)
Green Indicates whether or not the S controller is accessing the module.
On . . . . . The S controller is accessing the module.
Off . . . . . The S controller is not accessing the module.
EXT. POWER
(External Power)
Green Indicates whether or not 12-V DC power is supplied to the MAU power
supply terminal block.
On . . . . . The 12-V power is supplied normally.
Off . . . . . The 12-V power is either not supplied.
Note that this LED will not light unless the S controller power is turned on.
Combination of LEDs
Description
RUN on, STBY on The module is operating normally in standby mode
(Parameter setting wait state)*
RUN on, STBY off The module is operating normally in run mode
(Data transfer ready state)*
RUN off, STBY blinking An error occurred while the module was operating (Down mode)*
RUN off, STBY off An error was detected during power-on self-diagnostics
(Down mode)*