User`s manual

E-4 Motion Mate™ DSM314 for Series 90™-30 PLCs User's Manual – January 2001 GFK-1742A
E
Table E-1. Local Logic Math/Logical Operation execution times
Local Logic Math and
Logical Operations
(Assignment, := )
Local Logic Execution
Time
(In Microseconds)
Add (+) 0.90**
Subtract (-) 0.90**
Multiply (*) 1.30
Divide (/) 2.90
Modulus (MOD) 2.90
Absolute (ABS) 1.70**
BWAND 0.20
BWOR 0.30
BWXOR 0.20
BWNOT 0.50
**Note
Execution times for Addition, Subtraction and Absolute value (ABS) assume there
are no computation overflows.
Table E-2. Local Logic Conditional Operation Execution Times
Local Logic Conditional
Operations (IF…THEN)
Local Logic Execution
Time
(In Microseconds)
Greater Than (>) 2.50
Less Than (<) 2.50
Greater/Equal (>=) 2.50
Less/Equal (<=) 2.50
Equal (=) 2.30
Not Equal (<>) 2.30
BWAND 1.40
BWOR 1.40
BWXOR 1.40
BWNOT 1.60
Null operator (
IF var THEN
)1.10
END_IF 0.00
Note
The execution time for the conditionals is for the case where the IF…THEN
operation evaluates to FALSE. This represents the worst case execution
time, since the execution time required to evaluate a conditional that is
TRUE is less. Note that the END_IF instruction does not require any
execution time.