Technical data

Technology functions
CPU 317T: Technology Functions
6-244 A5E00251798-03
6.6.8 FB 455 MC_ReadDriveParameter - Reading drive parameters
Valid for firmware version V3.1.x of the integrated technology
Purpose
• The "MC_ReadDriveParameter" technology function allows the user program
to read the parameters of a drive connected to DP(DRIVE).
Applicable to
• Profidrive-compliant drives on DP(DRIVE)
Requirements
• The drive is configured for operation on DP(DRIVE).
• The drive must support data record communication.
• The drive must support the parameter number and the index.
Overriding commands
An MC_ReadDriveParameter command can not be canceled by any other
command.
An MC_ReadDriveParameter command does not cancel any other commands.
Input parameters
Parameter Data
type
Start value Description
Execute BOOL FALSE Start of the command at the positive edge
InOut BOOL FALSE
I/O assignment of the logical base address of
the drive
FALSE: input address
TRUE: output address
Address INT 0 Definition of the logical base address of the module
ParameterNumber DINT 0 Specification of the parameter number, from where the
data should be read - Range of values: 0 to 65535
SubIndex DINT 0 Definition of the parameter index used to address the
first array element of an array parameter (only when
NumberOfElements > 0, otherwise the value is set
internally to zero) - Range of values: 0 to 65535
NumberOfElements DINT 0 Number of sub-parameters to be read:
Value > 0: Parameter with subindex, range of values
0 to 234 (according to the max. length
of the data area at
input parameter Data)
Value = 0: Parameter without subindex
Value < 0: Not permitted