Preface
MicroLogix 1000 Programmable Controllers User Manual
11–8
Entering Parameters
Enter the following parameters when programming these instructions:
• File
is the address of the sequencer file. Y
ou must use the file indicator (#) for
this address.
Sequencer file data is used as follows:
Instruction Sequencer File Stores
SQO Data for controlling outputs
SQC Reference data for monitoring inputs
• Mask (SQO, SQC) is a hexadecimal code or the address of the mask word or
file through which the instruction moves data. Set mask bits to pass data and
clear mask bits to prevent the instruction from operating on corresponding
destination bits. Use a mask word or file if you want to change the mask
according to application requirements.
If the mask is a file, its length will be equal to the length of the sequencer file.
The two files track automatically.
• Source is the address of the input word or file for a SQC from which the
instruction obtains data for comparison to its sequencer file.
• Destination is the address of the output word or file for a SQO to which the
instruction moves data from its sequencer file.
Note You
can addr
ess the mask, sour
ce, or destination of a sequencer instruction as a
wor
d or file. If you addr
ess it as a file (using file indicator #), the instruction
automatically steps thr
ough the sour
ce, mask, or destination file.
• Control (SQO, SQC) is the control structure that stores the status byte of the
instruction, the length of the sequencer file, and the current position in the file.
You should not use the control address for any other instruction.
EN DN ER FD
15 13 11 08 00
Length of sequencer file
Position
Word 0
Word 1
Word 2
efesotomasyon.com - Allen Bradley,Rockwell,plc,servo,drive
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