Mitsubishi Electric MELSEC FX Series - 7.23 Data Table Operation; 7.23.1 LIMIT

7 Applied Instructions
7.23 Data Table Operation
695
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
7.23 Data Table Operation
7.23.1 LIMIT
Outline
This instruction provides the upper limit value and lower limit value for an input numeric value, and control the
output value using these limit values.
1. Format and operation, execution form
2. Set data
FX3U(C) FX3G FX2N(C) FX1N(C) FX1S FXU/FX2C FX0N FX0(S)
Instruction
name
Operation
Execution
form
Expression in each language
Structured ladder ST
LIMIT 16 bits Continuous LIMIT(EN,s1,s2,s3,d);
LIMITP 16 bits Pulse LIMITP(EN,s1,s2,s3,d);
DLIMIT 32 bits Continuous DLIMIT(EN,s1,s2,s3,d);
DLIMITP 32 bits Pulse DLIMITP(EN,s1,s2,s3,d);
Variable Description
Data type
16-bit
operation
32-bit
operation
Input
variable
EN Execution condition Bit
Lower limit value (minimum output value) ANY16 ANY32
Upper limit value (maximum output value) ANY16 ANY32
Input value controlled by the upper and lower limit values ANY16 ANY32
Output
variable
ENO Execution state Bit
Head device storing the output value controlled by the upper and
lower limit values
ANY16 ANY32
LIMIT
EN ENO
d
s1
s2
s3
LIMITP
EN ENO
d
s1
s2
s3
DLIMIT
EN ENO
d
s1
s2
s3
DLIMITP
EN ENO
ds1
s2
s3