Mitsubishi Electric MELSEC iQ-R Series, Руководство по программированию

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1908
27 ARITHMETIC OPERATION FUNCTIONS
27.2 Multiplication
27.2
Multiplication
MUL(_E)
These functions output the product of input values ((s1)

(s2)

(s28)).
*1 The input variable s can be changed within the range from 2 to 28.
Setting data
■ Description, type, data type
Processing details
■ Operation processing
• These functions multiply the INT, DINT, REAL, or LREAL data type values input to (s1) to (s28) ((s1)

(s2)

(s28)), and
output the operation result, in the same data type as (s), from (d).
Ex.
Data type: INT
• Input an INT, DINT, REAL, or LREAL data type value to (s1) to (s28).
• If an underflow or overflow occurs in the operation result, the output from (d) will be as follows.
Ladder, FBD/LD
*1
Structured text
*1
[Without EN/ENO] [With EN/ENO] [Without EN/ENO]
d:=MUL(s1,s2);
[With EN/ENO]
d:=MUL_E(EN,ENO,s1,s2);
Argument Description Type Data type
EN Execution condition (TRUE: Executed, FALSE: Not executed) Input variable BOOL
s1 (IN1) to s28 (IN28) Input Input variable ANY_NUM
ENO Output status (TRUE: Normal, FALSE: Abnormal) Output variable BOOL
d Output Output variable ANY_NUM
Data type: INT Data type: DINT Data type: REAL/LREAL
• Even if an underflow or overflow occurs, no
operation error is issued. When MUL_E is used,
ENO outputs TRUE.
• Even if the operation result is outside the INT data
type range, the INT data type value is output; (In
this case, the output value is of INT data type with
the upper 16 bits deleted although the operation
result is a DINT data type value.)
• If the operation result is outside the INT data type
range, convert the input value to the DINT data
type by using the INT_TO_DINT function, and
then perform operation.
• Even if an underflow or overflow occurs, no
operation error is issued. When MUL_E is used,
ENO outputs TRUE.
• Even if the operation result is outside the DINT
data type range, the DINT data type value is
output; (In this case, the output value is of DINT
data type with the upper 32 bits deleted although
the operation result is 64-bit data.)
• If the operation result is outside the DINT data
type range, convert the input value to the REAL
data type by using the DINT_TO_REAL function,
and then perform operation.
An operation error occurs and an undefined value
is output.
RnCPU RnENCPU
RnSFCPU RnSFCPU RnPCPU RnPCPU
(Standard) (Safety) (Redundant) (Process)
s1 d
s2
EN ENO
d s1
s2
(s1)
(s2)
(d)
1500 15 × 100
INT INT INT