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Rockwell Automation 1772-LV Mini-PLC - 2/15 Programmable Controller (Series B) Programming and Operations User Manual

Page 69

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Advanced Instruction Set

Chapter 6

6Ć12

Figure 6.5

Immediate Input Instruction

I/O Scan

Program Scan

Immediate input instruction

interrupts program scan

Returns to

Program

Scan

Module

Group

(input)

16 bits from

one module group

written into

input image table word

Examine bits in word

112 here in program

Word 112

2

10151ĆI

Function: The instruction is always considered logic true and execution takes
place whether or not other rung conditions allow logic continuity.

Immediate Output Update

Symbol: -(IOT)-

Purpose: Transfers one word from the output image table to the output module
group.

Syntax: Programmed at the output side of the logic rung. When programming
only assign output image table bit addresses (Figure 6.6).

Function: Execution occurs when logic continuity is established.