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CHAPTER2 Dependence Functions
2.4.6.7 Sequencer
This is a function to abort the program execution when the program is executedalong
with the event order specified by the user.
■ Control by Sequencer
Set two events, and set the flow in order from level 1 to level 2 as the condition for terminating the
sequencer. This sequencer is called a two-level sequencer.
Also, all previous information of the flow can be reset, and events for restarting monitoring the flow
through level 1 can be set again.
■ Operation of Sequencer
When the event for each level is set as shown below, the sequencer operates as shown in Figure 2.4-7 .
Figure 2.4-7 Example of Sequencer Operation
[Example] Level 1 : Event 1
Level 2 : Event 2
Restart : Event 3
Program execution start
Event 1 occurs
NO
YES
Level 1
YES
Break
Event 3 occurs
Event 2 occurs
NO
Level 2
YES
NO