Bit Shift Registers
Chapter 20
20-10
Programming an Examine On Bit Shift Instruction
To program an Examine On Bit Shift Instruction:
The prompt SHIFT REGISTER 12 appears in the lower left hand corner of
the screen.
EXAMINE ON
FILE:
BIT NO.
001
070
00
110
SHIFT BIT
19
A display represented by Figure 20.8 shows the format of an Examine On
Bit Shift.
Figure 20.8
Examine On Bit Shift Format
EXAMINE ON
FILE:
BIT NO.
001
110
SHIFT BIT
Numbers shown are default values. The number of default address digits initially displayed, 3, 4,
or 5 will depend on the size of the data table. Initially displayed default values are governed by the
I/O rack configuration.
This Value:
Stores This:
File
Starting address of the file (file of bit shift instruction).
Bit number
Decimal number of the bit to be examined (1999).
After you have entered the following conditions:
The file starts at word 400
Bit number 67 is for an on (1) condition.
