Features

• Two-wire connection
• Soft-I/O supplies power to the dry contacts
• Supply power choice of 5V or 24V
• User editable state names
• State inverse settings
• De-bounce time
• Flexible pin assignments
• Non-volatile saving of settings
• Flexible tags for remote control

In Action

You configure the dry contact by giving it a name--for example "Door is Open" and then drag-and-drop the connections to any Soft-I/O pins.  Mechanical dry contacts "bounce" when they close.  Because Soft-I/O is so fast, Soft-I/O can sense multiple "bounces" of the contacts and could perform the function more than once.  To avoid multiple responses, you merely configure the "de-bounce time" when you configure the dry contact Soft-Device.  Generally a time of 25 milliseconds will allow the contacts to settle.  When you have finished the configuration, merely submit your choices and then test the dry contacts on the Soft-Device page.  What could be simpler?

Technical Specifications

Each dry contact is connected to the Soft-I/O module with two wires—the module supplies switch power, and that simplifies wiring.
Non-volatile, user-configurable parameters include: Soft-I/O module supplied 24 V or 5 V power selection; normally open or normally closed switch sensing and state naming; switch debounce time; and Soft-I/O pin assignments.