Rockwell Automation 1772-LP3 PLC - 2/30 Programmable Controller Programming and Operations Manual - Manual (Page 261)

Bit Shifts
Chapter 14
14Ć9
Figure 14.7
EXAMINE ON SHIFT BIT Example Rung
EXAMINE ON
SHIFT BIT
FILE: 400
BIT NO.: 067
The Set Shift Bit output instruction sets a specified bit in a bit shift register
such as that shown in Figure 14.8. The user specifies the bit number of the
bit to be set and the starting address of the file. The instruction executes
upon a true-rung condition.
NOTE: If file is shifted, new data in the same bit position will be set if set
shift bit rung is still true.
Instruction overview:
Output instruction
Key sequence: [SHIFT REG] 16
3 words of users program required
To program a Set Shift Bit instruction press [SHIFT REG] 16. A display
represented by Figure 14.8 will appear.
14.5
Set Shift Bit
14.5.1
Programming Set Shift Bit
Instruction