TestWare-SX Digital Output

This type of process produces an output to control external devices and should be sequenced in parallel with a command process. Use this process when you want to trigger an external device.

Prerequisite

Equipment monitoring the digital output signals should be connected to the rear panel connector J55. You must know what type of signal will activate the external device.

How it works

The Digital Output process can signal up to eight external devices during a test. The process produces up to 8 output signals through the rear panel connector J55. All output channels that have an action assigned are issued when the process is executed.

More Information

The Digital Output Design window names the process and sequences it in a test template.

The Digital Output Parameters window assigns a signal action to each output.


Digital Output Design Window

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

Using the window

Use this window to designate a Digital Output process in a step of a template.

1	Name the process with the Label entry field.

2	Select a Start Trigger to start monitoring digital inputs. This process should be sequenced in parallel with a command process

3	Use the default End Trigger. This process happens so quickly it is unlikely that another process could stop it.

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 Digital Output Parameters window. This allows you to assign parameters to the default procedure.


Digital Output Parameters Window

You must create a digital output process in a template with the Digital Output Design window before you can access this window. The information in this window is saved with the test procedure.

Channel

Connector J55 on the digital controller provides up to 8 channels of digital output. When you use a digital output, you must know what digital devices are connected to that channel.

Actions

Set each channel to one of the following signals: None disables the channel.

Set turns the channel on, a logic high signal (+24 Vdc).

Clear turns the channel off, a logic low signal (0 Vdc).

Toggle inverts the current state from high-to-low or low-to-high).

Pulse inverts the current state for the duration of the Pulse Width specification

Pulse Width

Specifies the duration of a pulse action. Enter a value in the left entry field. The pulse width applies to all channels with the Pulse action selected.

Using the window

Use this window to establish the output requirements for each of the 8 digital outputs from the rear panel connector J55. The digital output provides 24-volt signals. Review the following characteristics:

Select an action that is appropriate for the device connected to the channel.

If a pulse action is selected, enter a pulse width appropriate for the device.

The 8 channels can be output to multiple destinations.

All 8 outputs are activated when the process begins.

When the process is complete, the outputs remain in the designated state. Only the pulse action returns the output to its original state.

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.