Emerson Epsilon EP Drive 400518-01 Manual de instalación descargar pdf (Pagina 74)

Epsilon EP-P Drive and FM-3/4 Module Reference Manual

The user must determine which signals are used to enable, activate, and then reset the Capture component. A

CaptureTriggered destination is then available to indicate to the user that data has been captured and is available for use.

Figure 57: Capture Component

A detailed description of all the Capture parameters is below.

CaptureEnable

The CaptureEnable is used to enable or “arm” the capture component. If the CaptureEnable is not active, then the

CaptureActivate has no effect, and the CaptureTriggered remains inactive. Once the CaptureEnable is activated, the Capture

component is ready and waiting for a CaptureActivate signal to capture data. CaptureEnable is a read-only destination on the

Assignments view, and is accessible through a user program.

CaptureActivate

If the Capture component is enabled and has been reset (CaptureTriggered is inactive), then the rising edge of

CaptureActivate will capture the four data parameters and cause CaptureTriggered to be activated. If the Capture component

is not enabled, or has not been reset, the CaptureActivate will be ignored.

CaptureReset

The CaptureReset is used to reset or re-arm the capture component after it has been activated. If the capture has been

activated, the CaptureTriggered destination will be active. The capture component cannot capture data again until it has been

reset. The capture component will automatically reset itself if the CaptureEnable signal is removed.

CaptureTriggered

The CaptureTriggered signal is read-only and indicates that the Capture component was activated and that data has been

captured. CaptureTriggered will activate on the leading edge of CaptureActivate if the Capture component is enabled and

reset. Capture Triggered will remain active until CaptureReset is activated.

Name

You can assign a descriptive name to each capture, making the setup easier to follow. The length of the text string is limited

by the column width with a maximum of 12 characters. Simply double click on the Name field of any capture’s line to assign

a name to it.

Capture Number

This parameter defines the number of Capture objects available. Maximum is eight.

Captured Data

The data that is acquired by the position capture is available to be used as variables in a program. The four parameters can

be accessed as follows:

Capture.#.CapturedTime

The time, in microseconds, from a free-running 32-bit binary counter at which CaptureTriggered activated.

CaptureEnable

CaptureActivate

CaptureReset

CaptureTriggered

Time

Command Position

Feedback Position

Master Position

Captured Data

1 2 ... 69 70 71 72 73 74 75 76 77 78 79 ... 239 240

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Emerson Epsilon EP Drive 400518-01 Manual de instalación Pagina 74