Mitsubishi Electric MELSEC IQ-R series Reference Manual page 489

■When accessing from an Ethernet interface module
When accessing a multidrop connection station with the frames (4E frame, 3E frame) for the Ethernet interface module,
specify the start input/output number of a multidrop connection source module (relay station) and the station No. of an access
target to the request destination I/O No. and the request destination module station No. For the request destination I/O No.,
specify the value obtained by dividing the start input/output number by 16 in 4 digits (hexadecimal).
The following shows the setting example of the cases below.
• Multidrop connection source module of the relay station: Start input/output number 0050H (request destination module I/O
No.0005H)
• Multidrop connection station of the access target: Station No.1
External device
: Unnecessary
Access target Frame
Multidrop connection station 4E/3E
Accessing via network
When accessing other stations via network, specify the network No. and station No. of an access target network module to the
network No. and PC No.
The following shows setting examples for accessing other stations via network (network No. 1, station No.2) without a
multidrop connection.
External device
: Unnecessary
Access target Frame
Other station via network 4C
• Network No.1
3C
• Station No.2
4E/3E
Other station accessed 4C
via the network module
3C
set in the "Valid Module
1C
During Other Station
Access" setting. 4E/3E
• Station No.2
1E
Multidrop connection
Connected station
(Host station)
E71 C24
(Relay station)
Start input/output No.0005
Station No. Network No.
 00
Connected station
(Host station)
Network
No.1
Station No. Network No.
00 01
00 01

01
00 FE
00 FE

00
 FE
 
:Station specified to the request destination module I/O No.
:Access target station
Station No.1 (Station specified to the request destination module station No.)
PC No. Request
destination
module I/O No.
FF 0005
Station No.2
:Access target station
(Station specified to the network No. and PC No.)
Other stations
PC No. Request
destination
module I/O No.
02 03FF

02
02 03FF
02 03FF
02 

02
02 03FF

02
Request Self-
destination station
module station No.
No.
01 
Request Self-
destination station
module station No.
No.
00 00

00

00
00 00
 00
 
00 
 
APPENDICES APPENDIX
Appendix 7 Setting Examples
A
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