Rockwell Automation 1772-L8_LW_LWP_LX_LXP,D17726.5.8 User Manual - Manual (Page 178)

EAF Math Instructions
Chapter 14
14-6
Figure 14.3
EAF Input and Result Rung
060
000
EXECUTE AUX
FUNCTION
FUNCTION NUMBER:
DATA ADDR:
RESULT ADDR:
01
040
060
G
061
300
G
062
000
G
063
000
G
040
000
G
041
250
G
042
000
G
043
000
G
050
000
G
051
G
050
052
000
G
053
000
G
Result
Operand A
Operand B
Keystrokes
Enter an EAF input and result rung (like Figure 14.3) be performing the
following steps.
1. Press .
2. Enter Result and Operand branches.
3. Enter the values for Operands A and B. You can enter these values
from the keyboard of your 1770-T3 terminal or through ladder
diagram functions.
4. Complete the parallel branches.
5. Press [Shift] [EAF].
6. Enter the appropriate function number (Table 14.A).
7. Enter the data and result addresses for the EAF instruction.
ATTENTION: Do not enter data in hexadecimal. Enter all
data in BCD. Failure to observe this warning could cause
unwanted machine motion and may injure personnel.
This EAF adds (or subtracts) two numbers. Word formats for addition or
subtraction are the same. The only difference between the two EAFs is
their function number: addition is 01 and subtraction is 02.
(+/- xxx xxx . xxx xxx) +/- (+/- xxx xxx . xxx xxx) = +/- yyy yyy . yyy yyy
or
(+/- Operand A) +/- (+/- Operand B) = +/- Result
Enter a rung like that shown in Figure 14.4
Addition and Subtraction