Lenze i55 Series User Manual

9.6.11 Read parameter data
This secon describes the request and response for the acyclic reading of a parameter.
Details
•
When a read request is processed, no parameter value is wrien to the slave.
•
When a read request is transmied by mul-parameters, the parameter aribute, index
and subindex are repeated.
•
A read request must not exceed the maximum data length of 240 bytes.
Request header
Byte 1 Byte 2 Byte 3 Byte 4
Request reference Request idencaon Axis Number of indices
Field Data type Values
Request reference U8 This value is dened by the master.
Request idencaon U8 0x01: Request parameters for reading.
Axis U8 0x00 or 0x01
Number of indices U8 0x"n" (n = number of parameters requested)
Parameter aribute
Byte 5 Byte 6
Aribute Number of subindices
Field Data type Values
Aribute U8 0x10: Value
Number of subindices U8 0x00
Index and subindex
Byte 7 Byte 8 Byte 9 Byte 10
Index Subindex
HIGH byte LOW byte HIGH byte LOW byte
Field Data type Values
Index U16 0x0001 ... 0xFFFF (1 ... 65535)
Subindex U16 0x0000 ... 0x00FF (0 ... 255)
Response to a correctly executed read request
Responses to a read request do not contain parameter aributes, indices and subindices.
Response header
Byte 1 Byte 2 Byte 3 Byte 4
Request reference
(mirrored)
Response idencaon Axis
(mirrored)
Number of indices
Field Data type Values
Request reference U8 Mirrored value of the parameter request.
Response idencaon U8 0x01: Parameter has been read.
Axis U8 0x00 or 0x01
Number of indices U8 0x"n" (n = number of parameters requested)
Conguring the network
PROFIBUS
Read parameter data
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Lenze i55 Series Specifications

General

Brand	Lenze
Model	i55 Series
Category	Inverter
Language	English