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5-3
Chapter 5. FUNCTIONS
■
Events 1 to 3
Events 1 to 3 are event configuration data. These are used after the event type,
event standby, hysteresis and ON delay time are set.
A total of three event types are available: PV type events, controller status events
and time events.
●
PV type events
• Basic specifications
The following page shows event type PV, deviation, absolute value deviation,
SP, MV and MFB. In the figures, the thick lines show ON-OFF changes in state.
The upper line expresses the ON state, and the lower line the OFF state.
EV and H stand for event setting value and hysteresis, respectively.
Output in the READY state is OFF.
• Event standby
Events function as follows when event standby has been set to ON.
• If the DCP32 is in the
state in the figure when changing from the READY
to the RUN mode and after restoring the power, operation is the same as when
event standby is set to OFF. The up-facing arrow in the figure indicates a
change to ON, and a down-facing arrow indicates a change to OFF.
• If the DCP32 is outside the
state in the figure when changing from the
READY to the RUN mode and after restoring the power, the state is OFF.
After entering the
state, the up-facing arrow in the figure indicates a
change to ON, and a down-facing arrow indicates a change to OFF.
• Event ON delay
The event No. to apply the delay to and the delay time can be set regardless of
event type. “Delay” functions to turn output ON when the event is continuously
ON for the preset delay time after the event OFF
→
ON condition is satisfied.
When event ON delay is combined with event standby, event standby must first
be canceled before event ON delay functions.
• Segment progression
• Output is OFF until the program progresses to a segment containing the event
setting.
• When the program progresses to a segment containing an event setting, event
ON/OFF operation is carried out according to the event setting value.
• The previous setting is valid until the program progresses to a segment
containing a new event setting. Accordingly, set as follows to disable the
event set to the preceding segment from a certain event onwards:
Direct action events:
Upper limit value of event setting
Reverse action events: Lower limit value of event setting
However, note that with some event types the event sometimes turns ON even
if you set as shown above.
• When the program has progressed to the No.1 segment by the cycle or pattern
link functions, the previous setting is disabled. Output is OFF unless the No.1
segment contains an event setting.