TestWare-SX Data Limit Detector

This type of process produces an event and should be sequenced in parallel with a command process. Meaningful data cannot be acquired unless the control channel is doing something.

How it works

The data limit process is useful to trigger other processes. A limit can be a number segments, an amount of time, or a sensor signal value. A limit can be specified as a relative value (starting when the process begins) or an absolute value (from a zero reference).

Three types of trigger options offer different ways to complete the process.

More Information

The Data Limit Detector Design window names the process and sequences it in a test template.

The Data Limit Detector Parameters window defines the characteristics of the process.


Data Limit Detector Design Window

This window specifies when the process starts and stops. The information in this window is saved with the test template.

Label

Names the process. Type the name you want to call the process in the entry field.

Start Trigger

Specifies the beginning of the process. Press the list icon and select a trigger.

End Trigger

Specifies the end of the process. Press the list icon and select a trigger.

Channel

The channel for the data limit detector determines how the limit is detected.

Select time to specify how long the process waits.

Select a control channel to count the number of segments of the control channel.

Select an input channel to monitor a sensor signal.

More Information

You can find detailed information about this process in Chapter 6 of the 790.10 TestWare-SX Application Manual.

Go to How it Works for an overview of the process.

After you complete this window, you can double-click the name of this process in the Edit Template window to display the Data Limit Detector Parameters window. This allows you to assign parameters to the default procedure.


Data Limit Detector Parameters Window

You must create a data limit detector process in a template with the Data Limit Detector Design window before you can access this window. Use this window to define the parameters of the process. The information in this window is saved with the test procedure.

Limit Value

The limit value can be expressed one of three ways (according to the channel selection in the Data Limit Detector Design window).

Time is expressed with a unit such as hours, minutes, and seconds.

Segments can be counted for the selected control channel. You can count either segments or cycles. Each cycle of a cyclic command consists of two segments. Counting cycles should be selected only when monitoring a cyclic command. Counting segments functions for all command processes.

Sensor feedback signals can be monitored to detect a specific sensor value or a change in sensor value.

Absolute and relative values

The limit value can be specified as an absolute or relative value.

The absolute selection for the time and segment count limit values reference the beginning of the test. The relative selection references the limit value to the beginning of the process.

The absolute selection for a sensor limit value references the value to zero. The relative selection references the limit value as a change from whatever the sensor feedback value may be when the process begins

Trigger Options

A limit can be detected in one of three ways.

Selecting Greater than limit value causes the process to end whenever the selected sensor feedback is more positive than the limit value.

Selecting Less than limit value causes the process to end whenever the selected sensor feedback is more negative than the limit value

Selecting Either transition causes the process to end whenever it crosses the limit value.

More Information

You can find detailed information about this process in Chapter 6 of the 790.10 TestWare-SX Application Manual.

Go to How it Works for an overview of the process.