YASKAWA SVC - KFS (Change Feedforward)

4.2 Motion Command Details
4.2.15 KFS (Change Feedforward)
4-74
4.2.15 KFS (Change Feedforward)
The KFS command transfers the set value of the OW30 setting parameter (Speed Feed-
forward Compensation) to the Feedforward SERVOPACK parameter and enables the setting.
Execution and Operating Procedures
1. Make sure that all of the following conditions are met.
* Before you change to this command during the execution of another command, you must check whether
the command can be changed and how operation changes when the command is changed. Refer to the
following section for details on changing from another command.
4.4 Changing the Command on page 4-137
2. Set the OW08 setting parameter (Motion Commands) to 16 to execute the KFS
motion command.
The value of OW30 is transferred to the Feedforward SERVOPACK parameter and is enabled.
The IW08 monitor parameter (Motion Command Response Code) is 16 during execution of this
command.
During command processing, bit 0 (Command Execution Flag) in the IW09 monitor parameter
will change to 1 (Processing). When processing is completed, this bit will change to 0 (Completed).
3. Set OW08 to 0 to execute the NOP motion command.
This concludes the process for changing the feedforward compensation.
Holding and Canceling Commands
Bit 0 (Hold Command) and bit 1 (Cancel Command) in the OW09 setting parameter can-
not be used to stop the axis.
Related Parameters
The parameters that are related to this command are listed in the following table.
 Setting Parameters
An SVC Function Module can automatically transfer setting parameters to SERVOPACK parame-
ters when they are overwritten. The KFS command is not required if this function is used. Refer to
the following section for details.
3.4 Motion Parameter Details −  Function Selection Flags 1−  Bit A: SERVOPACK Parameter Auto-
Write on page 3-29
No. Execution Condition Confirmation Method
1 There must be no alarms. Both IL02 and IL04 must be 0.
2
Motion command execution for the target axis
must be completed.*
IW08 must be 0 and bit 0 in
IW09 must be 0.
Register
Address
Name Setting Details
OW
08 Motion Commands
Set this parameter to 16 (KFS) to change the feedforward compensa-
tion.
OW
09
Bit 0
Hold Command This bit is ignored for the KFS command.
OW
09
Bit 1
Cancel Command This bit is ignored for the KFS command.
OW
30
Speed Feedforward
Compensation
Set the feedforward amount for the SERVOPACK as a percentage.
Important