Parameter Responses - Danfoss VACON 100 industrial Installation Manual

PROFINET IO protocol
5.4.6

Parameter responses

There are two types of parameter responses in PROFIdrive:
• Write response (response to a Write request)
• Read response (response to a Read request)
A read response consists of two elements:
• Response header
• Parameter value(s) (depending on the request type)
Response header
5.4.6.1 Error response
If an error occurred in the Parameter Access, the response provided by the slave is an error
response. An error response contains 4 octets as described below.
Octet
Field name
number
Function Num-
1
ber
2 Error Decode
3 Error Code 1
4 Error Code 2
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
Parameter value(s)
Table 34. Error response
Description
Operation number.
Defines how the error infor-
mation in the following two
fields should be decoded.
High 4 bits indicate error
class, 4 lower bits indicate
error code.
Application-specific.
Allowed values
The slave returns 0xDE to indicate an
error read response.
The slave returns 0xDF to indicate an
error write response.
Other values are not used in the Param-
eter Access.
Always 128 in PROFIdrive.
Other values are not used in the Param-
eter Access.
See Chapter 5.4.6.3 "PROFIdrive
Parameter Access errors"
Always 0 in PROFIdrive.
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