Chapter 12 Troubleshooting
1
2. Motion Curve and Timing Chart
When Vel_Ex changes from FALSE to TRUE, Vel_Bsy changes to TRUE. One cycle later,
Vel_Act changes to TRUE and the execution of the velocity instruction starts. When the target
velocity is reached, Vel_Invel changes to TRUE and Vel_Bsy and Vel_Act remain TRUE.
When Vel_E changes from TRUE to FALSE, Vel_Inve, Vel_Bsy and Vel_Act remain TRUE.
Programming Example 2
Below is the example that one MC_MoveVelocity instruction aborts another MC_MoveVelocity
instruction.
1. The variable table and program
Vel1_Ex
BOOL
FALSE
Vel_Ex
Vel_Invel
Vel_Bsy
Vel_Act
Vel_Abt
Vel_Err
300
Velocity
Time
Vel
11-23
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