YASKAWA MP2000 Technical Note page 16

TECHNICAL NOTE
MOTION APPLICATION ENGINEERING GROUP
The above drawing execution chart graphically illustrates the Drawing Family and Function table
from the previous page.
•
At power up, the A drawing executes AND completes before other drawings execute.
The A drawings execute once only at power up.
•
The high scan drawings always complete within the high speed scan set time as
illustrated above.
•
In the remaining time of the high speed scan, the low scan drawings execute in time
slices until they complete execution within the low speed scan set time.
•
At the completion of the low scan drawings, background system tasks are executed.
•
If an interrupt condition occurs, the I drawing executes immediately, then normal
scanning resumes.
•
Setting Parameters and Monitor Parameters are updated each high speed scan while
low scan I/O updates occur every low speed scan set time.
The update of I/O and parameters as well as understanding drawing execution is critical to
code development so that the proper interlocks exist to obtain expected logical results.
Yaskawa Electric America - 2121 Norman Drive South – Waukegan IL 60085
11/23/2005
Drawing Execution Chart
(800) YASKAWA - Fax (847) 887-7280
16 of 16 eng/05.055/MCD