BASIC commands
PROGRAMMING MANUAL 73
Revision 3.0
3.2.89 DRIVE_WRITE
/i
3.2.90 EDIT
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3.2.91 ELSE
See IF..THEN..ELSE..ENDIF.
3.2.92 ELSEIF
See IF..THEN..ELSE..ENDIF.
Type Axis command
Syntax DRIVE_WRITE(parameter, size, value [,mode])
Description The DRIVE_WRITE function writes to the specified parameter of the Servo
Driver via the MECHATROLINK-II bus. Upon successful execution, this com-
mand returns -1. If the command cannot be executed, the value 0 is returned.
The command is executed on the driver for the base axis set with BASE. It
can be changed using the AXIS modifier, as with all other axis commands and
parameters. For some parameters the driver needs to be powered off and on
again. The DRIVE_RESET command can be used for that purpose.
Note: This command waits for the response of the axis so, its execution is
slow and the time variable. Do not use this command together with other com-
mands that require quick execution.
Note: Executing a DRIVE_WRITE will temporarily disable the Servo Driver
Front Panel display.
Note: DRIVE_WRITE returns -1 on success. It also returns -1 with no parame-
ter read if the parameter number does not exist or has the wrong size.
Arguments • parameter
The number of the parameter to write to. Note that the parameter num-
bers are hexadecimal. The format of the data can be found in the Refer to
the Servo Driver manual for the format of the data.
• size
For most parameters the size is normally 2 bytes. Some special parame-
ters may be 4 bytes long. Sizes for each parameter can be found in the
Servo Driver manual.
• value
The value to be written into driver parameter.
• mode
The write mode. Possible values: 0 (or omitted) - write and store in RAM;
1 - write and store in EPROM.
Example IF DRIVE_WRITE($100,2,90) THEN
PRINT "The new speed loop gain is: 90"
ELSE
PRINT "The speed loop gain could not be written in RAM"
ENDIF
See also • DRIVE_READ, DRIVE_RESET, $ (HEXADECIMAL INPUT)
Caution
Be sure that no Parameter Unit or Personal Computer Software is
connected to the Servo Driver when executing this command. Oth-
erwise the program task will be paused until the connection of the
other device to the Servo Driver is removed.
Type Program command
Syntax EDIT [ line_number ]
ED [ line_number ]
Description The EDIT command starts the built in screen editor allowing a program in the
controller to be modified using a VT100 Terminal. The currently selected pro-
gram will be edited.
The editor commands are as follows:
This command is implemented for an offline (VT100) terminal. Within Trajexia
Tools, users can select the command from the Program menu.
• Quit Editor: [CTRL] K and D
• Delete Line: [CTRL] Y
Arguments • line_number
The number of the line at which to start editing.
Example No example.
See also SELECT.
I52E-EN-03.book Seite 73 Freitag, 29. Juni 2007 11:55 11
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