Rockwell-automation 1772-LV Mini-PLC - 2/15 Programmable Controller (S Manual de usuario descargar pdf (Pagina 88)

Advanced Instruction Set

Chapter 6

631

Here is an explanation of each value:

Counter Address: Address of the instruction in accumulated

value area of data table.

Current Step: Position in sequencer table (accumulated

value of counter).

Seq Length: Number of steps (preset value of the

counter).

Words per Step:Width of sequencer table.

File: Starting address of sequencer table.

Mask: Starting address of mask file.

Output Words: Words controlled by the instruction.

Load Words: Words fetched by the instruction.

Input Words: Words monitored by the instruction.

Sequencer Input

Symbol: SEQ 1

Purpose: Compares input data to stored data for equality.

You can compare up to 64 inputs.

Syntax: programmed as an input instruction. May be programmed with a

sequencer output instruction.

You mask the unused input bits (chapter 10 explains the term mask).

The counter is externally controlled by the ladder diagram logic.

This instruction requires 5-8 words of your program.

Function: You must externally index the counter in your program.

1 2 ... 83 84 85 86 87 88 89 90 91 92 93 ... 214 215

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Rockwell-automation 1772-LV Mini-PLC - 2/15 Programmable Controller (S Manual de usuario Pagina 88