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Mitsubishi Electric MELSEC FX Series - Page 705

Mitsubishi Electric MELSEC FX Series
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7 Applied Instructions
7.23 Data Table Operation
703
FXCPU Structured Programming Manual
(Basic & Applied Instruction)
1
Outline
2
Instruction List
3
Configuration of
Instruction
4
How to Read
Explanation of
Instructions
5
Basic Instruction
6
Step Ladder
Instructions
7
Applied
Instructions
8
Interrupt Function
and Pulse Catch
Function
A
Relationships
between devices
and addresses
Cautions
1) When handling 32-bit data in a structured program, a 16-bit device cannot be specified directly as in the
case of a simple project. Use a label to handle 32-bit data.
A 32-bit counter can be specified directly as it is a 32-bit long device.
Use a global label to specify a device.
2) When the output value overflows, it is handled as follows:
a) In the 16-bit operation
The output value is a 16-bit binary value with sign. Accordingly, if the operation result is outside the
range from -32768 to 32767, it is handled as follows:
b) In the 32-bit operation
The output value is a 32-bit binary value with sign. Accordingly, if the operation result is outside the
range from -2,147,483,648 to 2,147,483,647, it is handled as follows:
Error
An operation error is caused when the instruction is executed in the setting status shown below. The error flag
M8067 turns ON, and the error code (K6706) is stored in D8067.
(Contents of the device specified by ) > (contents of the device specified by )
Lower limit value of dead band =10
Input value =-32,768
Output value =-32,768-10
=8000H-AH
=7FF6H
=32,758
s1
s3
Lower limit value of dead band =1000
s1
Input value =-2,147,483,648
s3
Output value=-2,147,483,648-1000
=8000000H-000003E8H
=7FFFFC18H
=2,147,482,648

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