Delta MMC120 - Manual (Page 78)

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If the beginning and ending step numbers are out of range or reversed, this parameter
error is generated.
Unknown Parameter Error
Automatic parameter identification is a feature which has been added to these motion
controllers in firmware dated 19971016 (year-month-day) and newer. If you have
firmware older than this date and would like to use this feature, contact Delta Computer
Systems, Inc. technical support and ask for the latest firmware. You can check your
controller firmware date by selecting Module Configuration… from the Tools menu.
If your firmware is newer than the above date, and a parameter error is still not known,
contact Delta Computer Systems, Inc. technical support with the parameter error number.
It will most likely be necessary to obtain a newer version of the monitor program that
recognizes the new parameter error number.
Otherwise, you can attempt to trace down the error by looking at the command that
generated the parameter error and compare your usage of the command with the help
topic for the particular Command . To clear a parameter error, issue a Set Parameters
command to the axis. If this does not clear the error, then one of the sixteen axis
parameters has an invalid value.
Appendix A: Command Reference
General ASCII Commands
Change Acceleration Command
Character: A
Decimal: 65
Hexadecimal: 041
Command Value: New ACCELERATION value (units depend on Accel/Decel
Mode in the MODE word )
This command sets the ACCELERATION parameter to the value in the COMMAND
VALUE field. The change in acceleration takes place immediately if a move is in
progress.
Change Deceleration Command
Character: D
Decimal: 68