Parameter Access Via Acyclic Data Exchange (Record Data); Table 5: Record Data Request - TR-Electronic MP-Series Benutzerhandbuch

5.4 Parameter access via acyclic data exchange (record data)

Up to a maximum of 4 bytes of useful data can be transmitted with a PKW command.
Much greater quantities of data can be transmitted with an acyclic parameter
command, on the other hand. In particular, sub-areas of arrays can be transmitted in a
command.
The acyclic connection between IO controller and encoTRive is created automatically.
The IO controller writes an acyclic request with an ID, which the encoTRive checks
and processes before finally sending a response with the corresponding ID.
Please note the following:
● Only one command can be processed at a time.
● The initiative always comes from the IO controller (no spontaneous messages)
● Only one parameter can be processed in a command.
Byte Name
0 Request reference
1 Request ID
2 Axis
Number of
3
parameters
4 Attribute
Number of
5
elements
6 Parameter number
7 Parameter number
8 Subindex
9 Subindex
10 Format
11 Number of values
12-... Values

Table 5: Record Data Request

Printed in the Federal Republic of Germany
06/06/2019
Meaning
Uniquely identifies request / response. The control changes the
reference for each new request to ensure unique assignment.
0x01 Request parameter – read parameter
0x02 Change parameter – write parameter
Axis addressing for multi-axis drives.
Not currently evaluated
With multi-parameter accesses, this field contains the number of
parameters. With encoTRive: value 0x01
Specifies what is to be accessed:
0x10 Access to value
0x20 Access to description
When accessing simple parameters: value 0x00
Otherwise: Number of array elements to be accessed.
High Byte
Low Byte
High Byte
Low Byte
Data type according to Table 25
page 195;
Also allowed are:
0x41 Byte
0x42 Word
0x43 Double Word
Number of following values
TR - EMO - BA - DGB - 0019 - 08
This part is only available
when write-accessing
parameters
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