Ross openGear GPI-8941 Series, User Manual

Page: 49 / 92

GPI-8941 User Guide (v9.0) Configuring the GPI Inputs • 49
Configuring the GPI Inputs
This chapter applies if you have the following cards:
• GPI-8941-I16
• GPI-8941-I32
• GPI-8941-I16-O16
Configuring a GPI Input
The number of GPI Inputs displayed in the GPI Input Setup tab depends on the card model you are using. The
examples in this section feature the GPI-8941-I32 and the number of GPIs on your card may differ from what is
presented here. You must configure each GPI Input that will be used to communicate with your external device.
Each GPI Input can be configured independently by setting its Type, Polarity, and Toggle behaviors in the GPI
Input Setup > Setup tab. You can also choose to configure all inputs with the same settings.
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If the GPI All Configuration box is selected in the Config tab, you can change the settings for all GPI Inputs on
the Setup tab.
For More Information on...
• the options in the Setup tab, refer to the section refer to the section “GPI Input Setup Tab” on page 12.
To configure a specific GPI input
1. From the Tree View , select the node for the GPI-8941 you want to configure.
2. Select the GPI Input Setup tab.
3. Select the Setup sub-tab located at the bottom of the GPI Input Setup tab.
4. Use the Type menu to specify whether the contact closure is Wet or Dry. Choose from the following:
• Isolated — The GPI is activated when driven by an external voltage. (Dry)
• Pull to Ground — The GPI is activated when the +Input is connected to ground. (Wet)
5. Use the Polarity menu for level-triggered GPI inputs to set whether triggers are Normal (Active High) or
Inverted (Active Low).