Danfoss VLT Series Programming Manual page 191

Programming
6.5.4.20 DD_ReadParameter_ISD51x
This function block asynchronously reads general objects
from the object dictionary of the axis if the Enable input is
set. For the index and sub-index of the parameters, see
chapter 7 Servo Drive Parameter Description.
The output data is read from the device and is therefore
not immediately available.
DD_ReadParameter_ISD51x
AXIS_REF_- Axis
ISD51x
BOOL Enable
UINT Index
USINT Subindex
UDINT pBu er
UDINT Bu erSize
Illustration 6.44 DD_ReadParameter_ISD51x
Variable Data Default
name type value
VAR_IN_OUT
Axis AXIS_REF_ISD51x
VAR_INPUT
Enable BOOL FALSE
Index UINT 0
Subindex USINT 0
pBuffer UDINT 0
BufferSize UDINT 0
VAR_OUTPUT
Valid BOOL
Busy BOOL
Error BOOL
MG36D102
Programming Guide
Valid BOOL
Busy BOOL
Error BOOL
ErrorInfo DD_ERROR_-
ISD51x
AbortCode DWORD
DataLength UDINT
Description
Reference to the axis.
See
chapter 6.5.4.1 AXIS_REF_IS
D51x.
Get the value of the
parameter continuously
while enabled.
Index of the object to be
read.
Sub-index of the object to
be read.
Pointer to a buffer where
the read data will be
placed (use ADR()
function).
Maximum size of the read
data (size of the provided
buffer given in byte; use
SIZEOF() function)
The function block has a
valid output.
The function block is not
finished and new output
values are to be expected.
An error has occurred
within the function block.
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Variable Data Default
name type value
ErrorInfo DD_ERROR_ISD51x
AbortCode DWORD
DataLength UDINT
Table 6.22 DD_ReadParameter_ISD51x
6.5.4.21 MC_WriteParameter_ISD51x
This function block modifies the value of the specified
parameter.
It can take some time to write the data to the axis.
MC_WriteParameter_ISD51x
AXIS_REF_- Axis
ISD51x
BOOL Execute
INT ParameterNumber
DWORD Value
Illustration 6.45 MC_WriteParameter_ISD51x
Variable Data Default
name type value
VAR_IN_OUT
Axis AXIS_REF_ISD51x
VAR_INPUT
Execute BOOL FALSE
Parameter- INT 0
Number
Value DWORD 0
VAR_OUTPUT
Done BOOL
Busy BOOL
Description
Error identification and
instance identifier.
See chapter 6.5.2.3 Error
Indication.
SDO abort code if there is
an error. Available in the
list of constants:
SdoAbortCodes.
Length of the read data
[Byte].
Done BOOL
Busy BOOL
Error BOOL
ErrorInfo DD_ERROR_ISD51x
AbortCode DWORD
Description
Reference to the axis.
See
chapter 6.5.4.1 AXIS_REF_IS
D51x.
Write the value of the
parameter at rising edge.
Number of the parameter.
See Table 6.20. All other
numbers are not allowed
and lead to an error.
New value of the specified
parameter.
The function block has a
valid output.
The function block is not
finished and new output
values are to be expected.
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