How To Read Instruction Tables - Mitsubishi MELSEC QCPU Programming Manual

2 INSTRUCTION TABLES

2.2 How to Read Instruction Tables

The instruction tables found from Section 2.3 to 2.6 have been made according to the following
format:
2
Category
+
BIN 16-bit
+P
addition
and
+
subtraction
operations
+P
1 2
Description
1 ...........Classifies instructions according to their application
2 ...........Indicates the instruction symbol added to the instruction in a program
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Table 2.2 How to Read Instruction Tables
Symbol
+ S D
S D
+P
+ S1 S2 D
S1 S2 D
+P
3
Instruction code is built around the 16-bit instruction. The following notations are used to
mark 32-bit instructions, instructions executed only at the leading edge of OFF to ON,
real number instructions, and character string instructions:
•
32-bit instruction ......................... The letter "D" is added to the first line of the instruction
Example + D+
16-bit instruction 32-bit instruction
•
Instructions executed only at the leading edge of OFF to ON
................................. The letter "P" is added to the end of the instruction
Example
+ +P
Instructions Instructions executed only at the
executed when ON leading edge of OFF to ON
•
Real number instructions ........... The letter "E" is added to the first line of the instruction
Example
+
Real number instructions
•
Character string instructions ...... A dollar sign "$" is added to the first line of the
Example +
Character string instructions
Processing Details
(D)+(S) (D)
(S1)+(S2) (D)
4
E+
instruction
$+
MELSEC-Q/QnA
Execution
Condition
3 6-16
4 6-18
5 6 8
7
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