SMC Networks LECSN-T Series User Manual

20 - 15
20．PROFINET COMMUNICATION
20.4 ACYCLIC DATA EXCHANGE
20.4.1 Acyclic data exchange communication format
PROFIdrive parameters are transmitted/received between the master upper side and slave with acyclic
communication.
The transmission/receive will be in accordance with the following formats. The maximum size is 240 bytes.
Refer to the standards of PROFIdrive for details.
(1) Acyclic Data Exchange PROFIdrive parameter request format
Block definition
Byte n
Byte n + 1
n
Request header
Request reference
Request ID
0
Axis-No./DO-ID
No. of parameters = i
2
1
st
Parameter address
Attribute
No. of elements
4
Parameter number (PNU)
Subindex
i
th
Parameter address
...
4 + 6 × (i - 1)
1
st
Parameter value(s)
(only for request "Change
parameter")
Format
No. of values
4 + 6 × i
Values
...
i
th
Parameter values
...
4 + 6 × i + … + (Format_n ×
Qty_n)
(2) Acyclic Data Exchange PROFIdrive parameter response format
Block definition
Byte n
Byte n + 1
n
Response header
Request ref. mirrored
Response ID
0
Axis-No./DO-ID mirrored
No. of parameters = i
2
1
st
Parameter value(s)
(only after request
"Request")
Format
No. of values
4
Values or Error values
...
i
th
Parameter values
...
4 + ... + (Format_n × Qty_n)

SMC Networks LECSN-T Series Specifications

General

Brand	SMC Networks
Model	LECSN-T Series
Category	Controller
Language	English