HEIDENHAIN PROFIBUS-DP (DPV2) - Manual (Page 55)

Acyclic parameter data
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7.3 Base mode parameter access
7.3.1 General characteristics
A single acyclic parameter can be transmitted in one access. A
parameter access can be up to 240 bytes long.
7.3.2 Parameter requests and responses
Request header: Request ID, DO-ID and number of parameters of
the access.
Parameter address: One address for each parameter, if several
parameters are accessed.
Parameter value: If the Request ID is 0x02 (change value) the
value is set in the request and if the Request ID is 0x01 (request
value), the value appears in the reply.
7.3.3 Changing the preset value
The table below shows the structure of a change value request.
Write of Preset value, parameter 65000 parameter request
Request reference 0x00
Request ID 0x02 0x02->Change value,
0x01->read value
DO-ID (axis) 0x01 Drive object ID
No of parameters 0x01
Attribute 0x10 0x10->value
No of elements 0x00
Parameter number 0xFDE8 Parameter 65000
Sub index 0x0000
Format 0x04 Data type integer 32
Number of values 0x01
Table 23 Write of preset value