Digital Input Block

Purpose

The Digital Input (DI) block sends and receives digital data (1 or 0) from an I/O driver or OPC server every time the Scan, Alarm, and Control (SAC) program scans the block.

Features

The Digital Input block:

• Is a primary block.
• Can be used as a stand-alone block.
• Generates alarms when values are outside of defined limits.
• Sends and receives values from an I/O driver or OPC server when placed in Automatic mode.
• Receives values from an operator input in the iFIX WorkSpace, from scripts, from Program blocks, or from Easy Database Access programs when operating in Manual mode.
• Can be used in a chain with exception-based or time-based processing.

Typical Uses

Example

Fields