Yaskawa MP900 Series Ladder Programming Manual - Manual (Page 40)

3.1 Ladder Program Design Procedures
3.1.8 Checking the Operation of the Ladder Programs
3-13
Ladder Program Development Flow
3
( 3 ) Confirming the Operation of the 0001st Line (Timer Circuit)
Set MB000002 to ON in the Register List. Confirm the following points.
c
The DW00000 timer must increment every second.
d
After five seconds, the coil for MB000011 must turn blue in the Ladder Editor.
e
In the Register List, MB000011 must be ON for step
d
.
If no problems occur in the above procedure, then this concludes checking the operation of the 0001st line.
Input ON.
c Confirm that the value
increments every second.
d Confirm that the coil changes to blue.
e Confirm that the register is ON.