Danfoss VLT PROFIBUS DP MCA 101 User Manual

description attribute (20 H) subindex=1. If bit 10 is set, a
descriptive text exists for each value of the parameter.
As an example, parameter 0-01 Language has settings 0–5.
For each of these values, a specic text exists: 0=English,
2=Deutsch, and so on.
5.2.19 Format
Species the format type for each parameter (word, byte,
and so on), see Table 5.12.
5.2.20 Supported Data types
Value Data type
3 Integer16
4 Integer32
5 Unsigned8
6 Unsigned16
7 Unsigned32
9 Visible string
10 Octet string (byte string)
33 N2 (standardised value)
35 V2 (bit sequence)
44 Error
54 Time dierence without date indication
Table 5.12 Supported Data Types
5.2.21 Value
The value eld contains the parameter value of the
request. When the response is negative, the eld contains
a corresponding fault code. If the values consist of an odd
number of bytes, a 0-byte is appended to maintain the
word structure of the telegrams.
For a positive partial response, the parameter value
eld
contains the following attributes:
•
Format = Data type or byte, word, double word.
•
Number of values = Actual number of values.
•
Value = Parameter value.
For a negative partial response, the parameter value eld
contains the following:
•
Format = Error (44H).
•
Number of values = 1.
•
Value = Error value = Error number.
5.2.22 Fault Codes for Drive Prole V 3.0
When the parameter request is invalid, the frequency
converter returns a corresponding fault code. Table 5.13
lists the full range of fault codes.
Fault
code
Description More Info
0x00 Unknown parameter. 0
0x01 Parameter is read-only. Subindex
0x02 Value out of range due to maximum/
minimum value.
Subindex
0x03 Wrong subindex. Subindex
0x04 Parameter is no array. 0
0x05 Wrong data type (wrong data length). 0
0x06 This parameter may not be set, only reset. Subindex
0x07 Descriptive element is read-only. Subindex
0x09 No description available (only value). 0
0x0b Process control not possible. 0
0x0f No text array available (only value). 0
0x11 Not possible in current state. 0
0x14 Value out of range due to frequency
converter state/conguration.
Subindex
0x15 Reply too long (more than 240 bytes). 0
0x16 Wrong parameter address (unknown or
unsupported value for attribute, element,
parameter number, or subindex, or illegal
combination).
0
0x17 Illegal format (for writing). 0
0x18 Value amount not consistent. 0
0x65 Wrong axis: Action not possible with this
axis.
–
0x66 Unknown service request. –
0x67 This service is not possible with multi-
parameter access.
–
0x68 Parameter value cannot be read from bus. –
Table 5.13 Fault Codes for DP-V1 Parameter Requests
5.3
PCV Parameter Access
The PROFINET cyclic data exchange performs parameter
access via the PCV channel. The PCV channel forms part of
the PPOs described in chapter 4 Control.
Use the PCV channel to read and write parameter values,
and read status for descriptive attributes of each
parameter.
5.3.1 PCA Handling
The PCA part of PPO types 1, 2, and 5 performs several
tasks. Using PCA, the master controls and supervises
parameters and requests a response from the slave. Then
the slave responds to a request from the master. Requests
and responses are a handshake procedure and cannot be
Parameter Access Programming Guide
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Danfoss VLT PROFIBUS DP MCA 101 Specifications

General

Brand	Danfoss
Model	VLT PROFIBUS DP MCA 101
Category	Media Converter
Language	English