Appendix G  MSG-SND/MSG-RCV Functions (Ethernet)
G.2  Message Receive Function (MSG-RCV)
A-114
G.2.8 Relationship between Data Address, Data Size, and Offset for MSG-RCV 
Function
The relationships between data address, data size, and offset when received with offset are as follows:
( 1 ) When Reading
Start address of 
the read data 
Start address of 
the read data 
MW00000
IW
Data address B
Offset A
Data size C Data
M register
MP2000 series (reception: slave)
IW00000
IW
Data address B
Offset A
Data size C Data
I register
Remote device (transmission: master)
Data size CData
Data flow when reading
Parameter list
PARAM00
PARAM01
:
PARAM08
PARAM09
PARAM10
PARAM11
PARAM12
PARAM13
:
PARAM16
Offset A
Write range
♦ Transmission side sets the data address B and the data size C. 
♦ In case of non-procedure, read cannot be received. 
♦ The valid offset parameter may differ according to each data type. 
♦ The data type and register correspond as follows:
          Coil: MB, holding register: MW
          Input relay: lB, input register: IW
[MSG-RCV function] Parameter list