YASKAWA SVC - FIXPRM_CHG (Change Fixed Parameter)

4.3 Motion Subcommand Details
4.3.7 FIXPRM_CHG (Change Fixed Parameter)
4
Motion Control Program Commands and Instructions
4-135
4.3.7 FIXPRM_CHG (Change Fixed Parameter)
You can use FIXPRM_CHG subcommand to change the value of some of the fixed parameters
from a user application. The results of the change are immediately applied when execution of
the command ends.
The FIXPRM_CHG subcommand changes only the values in RAM. Therefore, any changes
made are lost when the power supply to the MP3000 is turned OFF and ON again, or when
data is saved on the Fixed Parameters Tab Page.
Furthermore, any changes that are made cannot be viewed on the MPE720. Use the FIX-
PRM_RD (Read Fixed Parameter) motion subcommand to confirm any changes that are made
to fixed parameters with this motion subcommand.
The FIXPRM_CHG command can be used to change the following fixed parameters:
Execution and Operating Procedures
1. Make sure that the following condition is met.
* This subcommand cannot be executed until the execution of other motion subcommands is completed.
2. Set the following setting parameters.
• OW54 (Auxiliary SERVOPACK Parameter Number)
• OL56 (Auxiliary SERVOPACK Parameter Set Value)
3. Set the OW0A setting parameter (Motion Subcommands) to 6 to execute the FIX-
PRM_CHG motion subcommand.
The IW0A monitor parameter (Motion Subcommand Response Code) is 6 during execution of
this command.
4. Set OW0A to 0 to execute the NOP motion subcommand.
This concludes the change fixed parameter operation.
No. Name Setting Range Setting Unit Default
12 Positive Software Limit
-2
31
to 2
31
−1
Reference units
2
31
−1
14 Negative Software Limit
-2
31
to 2
31
−1
Reference units
-2
31
No. Execution Condition Confirmation Method
1
Execution of motion subcommands must be
completed.*
IW0A must be 0 and bit 0 in
IW0B must be 0.
• OW54 and OL56 are normally used to set SERVOPACK parameter infor-
mation, but for the FIXPRM_CHG subcommand, these parameters are used to set the
fixed parameter information.
• An attempt to use this command to change any fixed parameters other than those
listed in the above table will result in a Command Error End (i.e., bit 3 in IW09 will
change to 1).
Information