13ć3 – Rockwell Automation 1772-LP3 PLC - 2/30 Programmable Controller Programming and Operations Manual User Manual
Page 246
Shift Register Instructions
Chapter 13
13Ć3
input word of data and to shift out one word of data to the output word.
The output word data should NOT be considered valid until the bit is set.
Instruction overview:
Output instruction
Key sequence: [SHIFT REG] 10
Counter manipulated by instruction
Can operate in distributed complete or complete modes
Requires 6 words of user program
WARNING: The counter address specified for the Shift File Up
instruction should be reserved for that instruction. Do not
manipulate the counter preset or accumulated values.
Inadvertent change to these values could result in hazardous or
unpredictable machine operation or a run-time error. Damage to
equipment and/or personal injury could result.
To program a Shift File Up instruction press keys [SHIFT REG] 10. A
display represented by Figure 13.3 will appear.
13.1.1
Programming Shift File Up
Instruction
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