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Installation manual
CNC 8060
CNC 8065
2.
MACHINE PARAMETERS.
(REF: 1402)
OEM machine parameters.
2.12 OEM machine parameters.
READING DRIVE (SERCOS OR MECHATROLINK) VARIABLES.
DRIVEVAR
Drive variables table.
Parameter DRIVEVAR may be used to define the list of DRV variables that grant access to
the variables and/or parameters of the digital drives via part-program, MDI/MDA mode, PLC
or interface.
The table has the following machine parameters.
Characteristics and limitations of Mechatrolink devices.
The access to Mechatrolink devices using DRV variables has the following characteristics
and limitations.
• Access to variables and/or parameters of the devices is only available for the Mlink-II
mode with 32 bytes.
• The variables can only be read, whereas the parameters may be read or written.
• Access to the variables of the drive is asynchronous (managed through the service
channel) whereas access to the parameters is synchronous (managed through the cyclic
channel).
• Either the parameters or the variables may be defined for the same axis, not both.
• If variables have been defined, it is not possible to access the DDSSetup or the setup
assistance.
• The maximum number of variables per axis or spindle is 2. There is no limit for parameters
per axis.
SIZE
Number of variables to be consulted at the drive.
Possible values: From 0 to 99.
Default value: 0.
Associated variable: (V.)DRV.SIZE
Parameter included in the DRIVEVAR table.
This parameter sets the number of variables to be consulted at the drive.
DATA
Variables of the drives.
This parameter shows the table to define the list of DRV variables.
• Sercos. DRV variables can access the variables of the drive. These variables
may be read-only or read and written.
• Mechatrolink. DRV variables can access the variables and/or parameters of the
drive. The variables of the drive can only be read, whereas the
parameters may be read or written.
DRIVEVAR
SIZE Number of elements of the drive variables table
DATA Variables of the drives.
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