Installation manual

Publication 1747-RM001G-EN-P - November 2008
7-2 Application Specific Instructions
About the Application
Specific Instructions
These instructions simplify your ladder program by allowing you to use a
single instruction or pair of instructions to perform common complex
operations.
In this chapter you will find a general overview preceding groups of
instructions. Before you learn about the instructions in each of these groups,
we suggest that you read the overview that precedes each section. This chapter
contains the following overviews.
• Bit Shift Instructions Overview
• Sequencer Instructions Overview
• RHC/TDF Instructions Overview
Bit Shift Instructions
Overview
The following general information applies to bit shift instructions.
Entering Parameters
Enter the following parameters when programming these instructions.
• File is the address of the bit array you want to manipulate. You must
use the file indicator (#) in the bit array address.
• Control is the control element that stores the status byte of the
instruction and the size of the array (in number of bits). Note that the
control address should not be used for any other instruction.
Table 7.2 Control File Structure
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Word 0 EN DN ER UL Not Used
Word 1 Size of bit array (number of bits)
Word 2 Reserved