Rockwell Automation 1772-LP3 PLC - 2/30 Programmable Controller Programming and Operations Manual - Manual (Page 263)

Bit Shifts
Chapter 14
14Ć11
Instruction overview:
Output instruction
3 words of users program required
Key sequence: [SHIFT REG] 17
To program a Reset Shift Bit instruction press [SHIFT REG] 17. A display
represented by Figure 14.10 will appear.
Figure 14.10
RESET SHIFT BIT Format
RESET SHIFT BIT
FILE: 110
BIT NO.: 001
Numbers shown are default values. Bold numbers must be replaced by userĆentered values. The number of default address digits
initially displayed Ċ 3, 4, or 5 Ċ will depend on the size of the data table. Initially displayed default values are governed by the I/O rack
configuration.
FILE : Starting address of the file (file of bit shift instruction).
BIT NUMBER : Decimal number of the bit to be set (1Ć999).
Figure 14.11 shows the format of Figure 14.10 for the following condition
of the bit shift register of Figure 14.1.
File – The file starts at word 400
8
.
Bit No. – Turn bit number 67 in shift register (Figure 14.1) to off (0).
Figure 14.11
RESET SHIFT BIT Example Rung
RESET SHIFT BIT
FILE: 400
BIT NO.: 067
14.6.1
Programming Reset Shift Bit
Instruction