
164
6 BASIC INSTRUCTIONS
6.2 Arithmetic Operation Instructions
Precautions
■
When specifying the same device in the source and destination
The same device number can be specified for both the source and the destination. In this case, note that the addition result
changes in every operation cycle if a continuous operation type ADD instruction is used.
■
Difference between ADD(P) instruction, +(P) instruction, and INC(P) instruction in a program
for adding "+1"
When ADD(P) instruction is used to add 1 to the contents of D0 every time X1 turns from OFF to ON, ADD(P) instruction is
similar to +(P) instruction and INC(P) instruction described later except for the contents shown in the table below
Operation error
There is no operation error.
ADD(P) instruction
+(P) instruction, INC(P) instruction
Flag (zero, borrow or carry)
Operates
Does not operate
Operation result
(s)+1=(d)
+32767
0
+1
+2
…
+32767
-32768
-32767
…
ADD
D0
K25
D0
X1
(D0)+25
→
(D0)
Summary of Contents for MELSEC iQ-F FX5 series
Page 1: ...MELSEC iQ F FX5 Series Programming Manual Instructions Standard Functions Function Blocks ...
Page 2: ......
Page 21: ...19 PART 1 PART 1 OVERVIEW Part 1 consists of the following chapter 1 OVERVIEW ...
Page 98: ...96 4 STANDARD FUNCTIONS FUNCTION BLOCKS 4 2 Standard Function Blocks MEMO ...
Page 840: ...838 23 TIME DATA FUNCTIONS 23 4 Division MEMO ...
Page 887: ......