General Electric Analog I/O Module

Purpose

The Analog Input (AI) block sends and receives analog data from an I/O driver or OPC server every time

the Scan, Alarm, and Control (SAC) program scans the block.

Features

• 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 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

• Read and write analog values at set time intervals or by exception from an I/O address, such as a

PLC register.

• Perform smoothing, signal conditioning, and alarm-limit checking.

• Assist in control situations such as direct digital control when chained to a PID or On-Off Control block.

• Initiate the processing of other blocks through the Next Block field.

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