En311 Operation Modes And Station Statuses - Toshiba V Series User Manual

4.3 EN311 Operation Modes and Station Statuses

The EN311 operation modes and its station statuses are described here. The method for
controlling the operation modes is described in section 4.8, "Operating Mode Control
Requests". The EN311 operation modes include the following:
(1) Initialize mode
• Indicates that the EN311 is processing the reset.
• When the reset processing is completed, the mode is changed to "Standby
mode".
• If the reset processing is completed abnormally (such as by error in self-testing
etc.), the mode is changed to "Down mode".
• During Initialize mode, the instructions from the S controller user program cannot
be executed.
(2) Standby mode
• In this mode, the EN311 parameters can be set for the EN311.
• The Standby mode is the only the only mode in which the EN311 parameters can
be set.
• After setting the EN311 parameter, the mode can be changed to "Run mode" by
the S controller user program instruction.
(3) Run mode
• In this mode, the EN311 can perform transmission with other nodes.
• The mode can be changed to "Standby mode" by the S controller user program
instruction.
• In Run mode, whether the computer link/PC link procedure can be transmitted or
not and whether the socket interface can be transmitted or not can be specified
separately.
(4) Down mode
• Indicates that the EN311 is placed in unrecoverable abnormal condition.
• Once the mode is changed to the Down mode, it can be recovered only by turning
on the power again or using the resetting switch.
• The details of the Down mode can be checked by means of the data on the I/F
buffer memory with the S controller.
(Refer to "7.2 Down Information".)
Figure 4-2 shows the EN311 mode transition diagram. The EN311 operation modes are
indicated in rectangular frames. The operation modes shown inside the boldface frames
can be controlled by the user program. The thick arrows in the diagram indicate the
requests which can be specified by the user program.
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4.3 EN311 Operation Modes and Station Statuses
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