ID 442710.00 30WE KEEP THINGS MOVING
More about PROFINET?
6
Operation manual PROFINET
6.4.3.2.3 RECORD data record - Header "Request" and "Response"
Parameter values are generally transferred via the header of the RECORD
data record. Depending on whether this is a request or response header, the
headers are structured differently.
Header "Request"
A Request header has the following elements in the specified sequence.
Element Data type Value, V.-range Meaning
Request_
reference
Byte 00
hex
– FF
hex
Freely selectable number for
a request
Request_ID Byte 01
hex
Read request
02
hex
Write request
All other values Reserved
Axis_number Byte 0 – 3 Addressing the axis
Number_of_
parameters
Byte 1 Number of parameters that
should be processed
All other
values
Reserved
Attribute Byte 10
hex
Access type: value
80
hex
Access type: raw value
81
hex
Access type: integer
82
hex
Access type: floating point
Number_of_
elements
Byte 1 1 Parameter value should be
written or read
2 – 32
hex
2 – 50 Parameters should be
read or written
Parameter_
number
Word 2000
hex
– 5FFF
hex
Group and targets of the
parameter address
Subindex Word 0 – 3E80
hex
0 = Parameters that are not
a record or array
Format Byte 08
hex
Transfer format: floating
point
41
hex
Transfer format: byte
42
hex
Transfer format: word
43
hex
Transfer format:
double word
Number_of_
values
Byte 1 Number of values to be
processed
Value Dint Parameter value or error
code in the event of an error
(see "Error values" table)
Element Data type Value, V.-range Meaning
To Next Page
Loading...
