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Numbers shown are default values. Bold numbers must be replaced by user entered 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.
FILE
: Starting address of the file (file of bit shift instruction).
BIT NUMBER
: Decimal number of the bit to be examined (1 999).
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Figure 14.4
EXAMINE OFF SHIFT BIT Format
EXAMINE OFF
SHIFT BIT
FILE:
BIT NO.:
Figure 14.5 shows the format of Figure 14.4 for the following conditions
for the shift register of Figure 14.1.
File – Starts at word 400
Bit No – Examine bit number 67 in the shift register for an off (0)
condition
Figure 14.5
EXAMINE OFF SHIFT BIT Example Rung
FILE:
BIT NO.:
Chapter 14
Bit Shifts
110
001
EXAMINE OFF
SHIFT BIT
400
067
14 7
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