
3. DATA CONTROL FUNCTION
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PMC CONTROL SOFTWARE
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The MDI keyboard, CRT graphic display, reader/punch interface, and NC
command program are accessed using the functions listed in Subsection
3.1.3. Either of the following two types can be specified for the device
control parameters in link control statement data: (For how to specify the
device control parameters, see IV-4.3.1.)
(1) NO-WAIT type: The PMC waits for the completion of an access to
a device described above using the PMC control software. During the
wait period, the task is kept in the run state and another task is not
initiated.
(2) WAIT type: The PMC waits for the completion of an access to a
device described above using the PMC control software. During the
wait period, the task enters the wait state and control is passed to
another task. When the access is completed, the task enters the run
state and proceeds to the next step.
CAUTION
When the wait type is selected for the MDI keyboard, the
PMC enters the wait state and remains there until the
command key is pressed. When the no-wait type is selected
for the MDI keyboard, the PMC does not wait for the
processing to terminate under the PMC control software.
3.1.4
Device Control
Parameters