YASKAWA JEPMC-MP2300-Y Series

7
Motion Commands
7.2.10
Change Linear Deceleration Time Constant (DCC)
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7.2.10 Change Linear Deceleration Time Constant (DCC)
The DCC command transfers the setting of the Linear Deceleration Time (motion setting parameter
OL

38) to the Second-step Linear Deceleration Time Constant in the SERVOPACK and enables
the setting.

For the SGD-

N and SGDB SERVOPACKs, this command cannot be used because these
SERVOPACKs does not have the parameters for setting the deceleration time constant.

MECHATROLINK-II has a function that automatically updates setting parameters if a parameter
changes. There is no need to execute the DCC command with this function. For details, refer to bit
A (User Constants Self-writing Function) in the 6.4.1 ( 2 ) Function Selection 1 on page 6-18.
( 1 ) Executing/Operating Procedure
1.
Check to see if all the following conditions are satisfied.
2.
Set OW

08 to 11 to execute the DCC motion command.
The DCC command will transfer the setting of the Linear Deceleration Time (motion setting
parameter OL

38) to the Second-step Linear Deceleration Time Constant in the SERVO-
PACK and enables the setting.
IW

08 will be 11 during command execution.
IB

090 will turn ON during the command processing and will turn OFF when the process-
ing has been completed.
3.
Set OWxx08 to 0 to execute the NOP motion command and then complete the change
of the linear deceleration time constant.
( 2 ) Holding and Aborting
The Command Pause bit (OB

090) and the Command Abort bit (OB

091) cannot be used.
( 3 ) Related Parameters
[ a ] Setting Parameters
No. Execution Conditions Confirmation Method
1 There are no alarms.
Both IL

02 and IL

04 are 0.
2 Pulse distribution has been completed for the SERVOPACK.
IB

0C0 is ON.
3 Motion command execution has been completed.
IW

08 is 0 and IB

090 is OFF.
Parameter Name Setting
OW

03
Function 1
Set the speed unit, acceleration/deceleration unit, and filter type.
OW

08
Motion Command
The linear deceleration time constant is changed when this parameter is set to 11.
OB

090
Command Pause
This parameter is ignored for DCC command.
OB

091
Command Abort
This parameter is ignored for DCC command.
OL

38
Linear Deceleration Time
Set the deceleration for feeding as the deceleration time.