GE GFK-0804B manual R1+R2 ! R3 R1+ 1! R4

4

Programming Software Instructions

1.Select Math/Move (F5).

2.Select +ADD (F1) from the Math/Move function keys.

3.Enter the first number to be added. This can be either a constant, or a register location that will contain the number to be added. For example: R001. Then press the Enter key.

4.Enter the second number to be added. This can also be a constant or a register location. Press the Enter key.

5.Enter a register location to contain the total. Press the Enter key.

Examples and HHP Instructions

I1

"

Ladder Diagram

[R1+R2 ! R3]

[R1+ 1! R4]

46131

	Hand-held Programmer
START	F1	I1
MATH	F1	R1
		R2
		R3
OUT	F1 (DROP)
START
MATH	F1	R1
		1
OUT		R4
	F1 (DROP)

In the first rung of the example above, the Positive Transition contact I1 is used as conditional logic to the Addition function. When I1 transitions on, the value in register R2 is added to the value in register R1 and the total is placed in register R3.

In the second rung of the example, there is no contact placed before the Addition function. That means it is executed unconditionally. Each program scan, 1 is added to the value in R1.

In this example, since R1 is also one of the parameters of the first Addition function, these two rungs of logic work together. Each program scan, the second rung increments the value in R1 that is being added to the contents of R2.

GFK-0804B Chapter 4 The Micro PLC Instruction Set 4-23