Delta Electronics DVP15MC11T

Chapter 12 Troubleshooting
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1
and BufferMode. The master axis can be a real axis, virtual axis or encoder axis. The salve axis can
be a real axis or virtual axis.
2. In the instruction execution, the slave axis need be enabled and the master axis can be enabled or
disabled.
3. If the MC_GearIn instruction is executed when the e-gear relationship between two axes has not
been built yet, the velocity of the slave axis will reach the target velocity according to the values of
RatioNumerator, RatioDenomenator, Acceleration, Deceleration and Jerk specified by the
instruction.
After the e-gear relationship between two axes has been built (when InGear of the instruction
changes to TRUE), the relationship among the velocity of the slave axis, gear ratio numerator, gear
ratio denominator and the velocity of the master axis is shown as below.
4. E-gear ratio
If the e-gear ratio is a positive number, the motion directions of the slave axis and master axis are
same.
If the e-gear ratio is a negative number, the motion directions of the slave axis and master axis are
opposite.

Programming Example
Below is the example of execution of MC_GearIn instructions.
1. The variable table and program
Variable name
Data type
Initial value
Vel
MC_MoveVelocity
Axis1
USINT
1
Axis2
USINT
2
Vel_Ex
BOOL
FALSE
Vel_Dir
MC_DIRECTION
1
Vel_BM
MC_Buffer_Mode
0
Vel_Invel
BOOL
Vel_Bsy
BOOL
Vel_Act
BOOL
Vel_Abt
BOOL
Vel_Err
BOOL
Vel_ErrID
WORD
GearIn1
MC_GearIn
GearIn1_Ex
BOOL
FALSE
GearIn1_BM
MC_Buffer_Mode
0
GearIn1_InGear
BOOL
GearIn1_Bsy BOOL
GearIn1_Act
BOOL
GearIn1_Abt
BOOL
GearIn1_Err
BOOL
GearIn1_ErrID
WORD
Accelera tion (or Deceleration)o f Slave axis Acce lerati on (or Deceleration) of M aster axis= x
RatioNumerator
RatioDenominator
Target velocity of Slave axis Velocity of Master axis= x
Gear ratio n umeberator
Gear ratio denominator
E gear ratio- =
RatioNum erator
RatioDenominator
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