Balluff BIS U-6127-081-1 4-06-ST36 Betriebsanleitung Seite 321

BIS U-6127-081-1_4-06-ST36
Processor unit
9
OPC UA (continued)
ReadMultipleTagDataFormatted
This method can be used to read and output formatted
data selected from several tags. The data which is to be
read and how it is to be formatted can be set and read via
the methods SetTagDataFormat() (see page 153) and
GetTagDataFormat() (see page 153).
Furthermore, it is possible to specify whether and which
data should be prepended or appended to the outputs.
This can be set and read via the methods
SetMultipleTagDataHeader() (see page 151) and
GetMultipleTagDataHeader() (see page 152).
Call parameter
Name Data Type
Maxtags UInt32
Password ByteString
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Description
Specifies the maxi-
mum number of
tags that can be
read from.
The maximum
number is limited
because the Read-
Data output para-
meter is limited to
512000 bytes. The
product of Maxtags
and the variable Buf-
ferLenReadFormat-
ted (see page 159)
therefore must not
exceed the
value 5120000.
If the area to be read
is locked, the corre-
sponding 4-byte-
long password must
be entered here.
Only one password
can be specified.
For tags with a
different password,
the read command
cannot be executed.
Return parameter
Name Data Type
ReadData ByteString
ReadTags UInt32
Status AutoIdOperati-
onStatusEnu-
meration (see
chapter 9.7.2 on
page 161)
Description
The successfully
read data are output
here as a Byte-
String.
Indicates the
number of success-
fully read tags.
Returns the result of
the operation.
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