Mitsubishi Electric MELSEC iQ-F Series FX5 User Manual page 26

Ex.
When specifying the default processor (0005H) as the request destination module I/O number
0 0 0
ASCII code
30H 30H 30H
Request destination
module I/O No.
Request destination multi-drop station number
■Request message
Header
Subheader
destination
■Response message
Header
Subheader
destination
Specify the station number of the SLMP compatible device linked by the multi-drop connection in the access destination,
within the range shown in the table below.
When not specifying the SLMP compatible device linked by the multi-drop connection, set 00H.
No. Access station of external equipment
1 Stations on the multi-drop connection
("F" in the figure below)
2 A station that relays the network and the multi-drop connection
("E" in the figure below)
*1
3 Other than above
*1 Please use specification No.3 to access FX5CPU.
External device
Ethernet
Ex.
When specifying 00H as the requested multi-drop station number
ASCII code
0 0
30H 30H
Requested multi-drop
station number
3 MESSAGE FORMAT
24
3.1 Message Format
Binary code
5
35H
Request Request Request
destination destination
network station No. module I/O
No. No.
Application data
Request Request Request
destination destination
network station No. module I/O
No. No.
Another station
Connecting
station
Network
A
No. 1
Another station
No. 3
Binary code
05H 00H
Request destination
module I/O No.
Application data
Request Request
destination data
multidrop length
station No.
Request Response
destination data length
multidrop
station No.
Another station
B
Relay
station
C
B
Another station
00H
Requested multi-drop
station number
Reserve Command Subcommand Request
End Response
code data
Request destination multi-drop station number
Set the station number (00H to 1FH (0 to 31))
("F" in the figure below)
00H (0)
00H (0)
Multi-drop connection
D
Multi-drop
connecting
station
Network
E
No. n
MELSEC iQ-R
series etc.
D
No. 2
data
Multi-drop Multi-drop
connecting connecting
station station
F F
No. 1