Control Techniques Epsilon EP-P, Справочное руководство

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Epsilon EP-P Drive Reference Manual
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www.controltechniques.com Revision: A4
Distance rather than units of Time.
Use the combo box in the Timebase column to change the individual Timer Timebase settings.
Timer Preset
This parameter is used to control the actual duration of the timer delay.
If the Timebase is set to Realtime, the user specifies the Preset value in units of seconds with resolution of 1 microsecond (0.000001 seconds).
If the Timebase is set to Synchronized, the Preset value is set in units of Master Distance and the resolution is dependant upon the Master
Distance Units Decimal Places configured on the master Units view.
Once a timer has begun timing, if the Preset is modified, it is ignored until the next time the timer starts.
The Preset value must always be positive and can range from 0 to 2147483647 with the decimal place removed (example: 0.000000 to
2147.483647 with six decimal places).
Timer "Elapsed Time"
This is a read only parameter available on the Online tab that acts as feedback to the user to indicate how much of the Preset time has expired.
This value starts at zero and counts up to the Preset value.
This parameter has the same resolution as the Preset parameter.
If a Timer is Reset or Enable deactivates, this value is zeroed out automatically. Once the Preset time is reached, the Elapsed Time will remain
at its full preset value until the Timer is Reset, the Enable deactivates, or the Output deactivates.
3.22.1 Timer Signals/Events
The Timer objects has several inputs and outputs that are available on the Assignments view, or within a user program. A block diagram of the
Timer object is seen in Figure 77 below.
Figure 77: Timer Object Block Diagram
Input Events / Destinations
The following signals are available in user programs and as Destinations on the Assignments view.
Timer.#.TimerEnable
The Timer Enable event is level sensitive (not edge only) and is used to enable the Timer object. If a timer is not Enabled, the Output will never
activate regardless of the state of the Input.
When the TimerEnable is deactivated, all output events associated with that Timer object will also deactivate and Elapsed Time will be set to
zero.
All timer types use the Enable even though it is not shown in the individual timing diagrams. See examples of how TimerEnable affects timer
functionality in Figure 78 and Figure 79.
Preset
Type
Timebase Elapsed Time
Timer.#
Output Events Input Events
TimerActive
TimerOutput
TimerEnable
TimerInput
TimerReset