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5 MELSEC FUNCTIONS
5.19 Data Control
5.19.1 Upper/lower limit control LIMIT_MD
The output value is controlled depending on whether the specified BIN 16-bit data is within the upper/lower limit
value range or not.
Function definition
BOOL LIMIT_MD (BOOL EN, ANY16 S1, ANY16 S2, ANY16 S3, ANY16 D);
Argument Name
IN/OUT
Description
EN IN
Execution condition (Function is executed only when the
result is TRUE)
S1
IN
Lower limit value (BIN 16-bit data)
S2
IN
Upper limit value (BIN 16-bit data)
S3
IN
Input value (BIN 16-bit data)
D
OUT
Output value (BIN 16-bit data)
Remarks: The output value is controlled as described below.
When S1 (lower limit value) > S3 (input value)
......................................................... S1 (lower limit value) D (output value)
When S2 (upper limit value) < S3 (input value)
.........................................................S2 (upper limit value) D (output value)
When S1 (lower limit value)
≤
S3 (input value)
≤
S2 (upper limit value)
..................................................................S3 (input value) D (output value)
Return Value
Description
BOOL Execution
condition
Example of use
(* When execution condition X0 turns ON, the output value is stored into Result *)
(* depending on whether or not the input value specified in iData3 is within the *)
(* per/lower limit value range specified in iData1 and iData 2.
*)
LIMIT_MD (X0, iData1, iData2, iData3, Result);
Corresponding MELSEC command
LIMIT (16-bit upper/lower limit control)
For the usable data type, refer to "3.2.2
About ANY type".
Содержание MELSEC L series
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