Rockwell Automation 1775-S4B,D17756.5.3 User Manual SCANNER/MSG HND - Manual (Page 84)

Using Symbols and Expressions
in Report Generation
Chapter 8
8Ć16
The bit patterns for the two values are given below:
User Symbol Value Stored Bit Pattern (32Ćbits)
A
B 5
10 00...00000101
00...00001010
The following command lines show a bit shift execution on a negative
value:
A=-1
B=(A>>1)
P A
P B
The 1775-S4B scanner prints out the value -1 for user symbol A and -1 for
user symbol B which is a bit shift operation on user symbol A.
The bit patterns for the two values are given below:
User Symbol Value Stored Bit Pattern (32Ćbits)
A
B Ć1
Ć1 11...11111111
11...11111111
Report generation supports the slash (/) for a bit test:
If the bit is: Then the 1775ĆS4B scanner returns:
On
Off 1
0
For example:
If you enter:
P ($I:12/010)
The 1775-S4B scanner returns the value 0 or 1:
If Input word 12, bit 10 is: Then the 1775ĆS4B scanner returns:
On
Off 1
0
8.5.7
Bit Operation