Download vacon user manual

vacon • 58
6.3.3.1
PROFIBUS DP interface
DP-V1 header
The DP-V1 response header consists of 4 fields, each one octet in size.
Octet
number
Field name
Description
Allowed values
Use 0x5E for read requests.
1
Function Number
PROFIBUS DP-specific
operation number.
Use 0x5F for write requests.
Other values are not used in the Parameter
Access.
2
3
4
6.3.3.2
Slot Number
PROFIBUS DP-specific refThis value is mirrored from the associated
erence to internal device
request.
module.
Index
PROFIBUS DP-specific
index used to address different properties.
Data Length
Number of data octets in
the parameter request
frame. This count excludes
the DP-V1 header.
Use 47 for Parameter Access in OPTE5/E3.
Other values should not be used for
Parameter Access.
Number of octets in response header,
parameter address(es) and parameter
value(s) fields.
Error response
If an error occurred in the Parameter Access, the response provided by the slave is an error response. Its
PROFIBUS DP-V1 header contents differ from a normal read/write response. An error response contains 4
octets as described below.
Octet
number
Field name
Description
Allowed values
The slave returns 0xDE to indicate an error
read response.
1
Function Number
PROFIBUS DP-specific
operation number.
The slave returns 0xDF to indicate an error
write response.
Other values are not used in the Parameter
Access.
6
2
Error Decode
Defines how the error
information in the following two fields should be
decoded.
Always 128 in PROFIdrive.
3
Error Code 1
High 4 bits indicate error
class, 4 lower bits indicate
error code.
See chapter 6.3.3.3.
4
Error Code 2
Application-specific.
Always 0 in PROFIdrive.
Other values are not used in the Parameter
Access.
Tel. +358 (0) 201 2121 • Fax +358 (0)201 212 205