User Manual, AUX FUNCT PROM Manual
Programming
Chapter 3
313
4. Enter values for operands 1 and 2.
You can enter these values from the keyboard of your industrial terminal or
through ladder diagram functions. Entry of operand 1 - 102746 and operand 2 -
256384 produces the result 359130 when the addition function executes.
Figure 3.4 shows how the result is stored.
Figure 3.4
AF4
Addition Function Format After Execution
171615141312111076543210
S
02
Bit No
Data Address
Operand 1
Operand 2
S
Result Address
Result
DERE
E = Enable Bit (1 = Function in Progress)
S = Sign Bit (1= Negative)
D = Done Bit (1 = Function Complete)
ER = Error Bit (1 = Overflow)
11483
Word 201
Word 202
Word 203
Word 204
Word 305
Word 306
(0)
S
(0)
1
467
562
843
593
301
(0) (0) (1) (0)
Entry and Display of Input and Result Values
Figure 3.5 shows one method for inserting input values and displaying input
values and results of AF4 addition computations. Although there are several
techniques for accomplishing this, we chose get instructions. The first rung
requests an AF4 addition. The second rung shows the two operands in its top
branch and the resultant sum in its lower branch.