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6.1.2.
NRT communication
(Non Real-time communication)
MG80-PN can perform NRT command communication (Non Real-time
communication) with a master (PLC of PROFINET device) at any timing.
Commands such as measurement parameter change and reset are performed by
NRT command communication.
The data structure of the send command is shown below.
Data structure of command transmission
Offset
Label
Item
Description
0
INC
Transmission
count
Each time a command is sent, a value of +1 is
set.
1
CMD
Command
number
Set the command number (Hex value) to be sent.
*Refer to the NRT communication command list
for details.
2
RSV1
Reserved
Unused, it is set to zero.
3
RSV2
Reserved
Unused, it is set to zero.
4
~
15
DATA1
~
DATA12
Transmission
data
12 byte of transmission data
*The description of the transmission data changed
due to the command to be transmitted.
The dummy part is filled with zeros.
For details, refer to 6.1.3. NRT communication
command list.
The response data is 8bytes of header information plus 16bytes of response
data.
The following shows the response data structure.
Response data structure
Offset
Label
Item
Description
0
~
7
HEAD Header
information
8-byte NRT header information
8
~
23
DATA Response data
16-byte response data
*The description of the transmission data changed
due to the command to be transmitted.
The dummy part is filled with zeros.