Mitsubishi MELSEC-A Series Reference Manual page 171

7. DATA LINK SETTINGS
(3) Assignment of inputs (X) and outputs (Y)
(a) Input and output range used for data link by master station
The master station uses the X/Y0 to X/Y14F range as I/O of host station. The X/
Y150 to 7FF range can be used for the data link.
(b) Assignment of remote I/O stations
1) Assignment of remote I/O station No.1
Inputs (X) : X0 to 8F
Outputs (Y) : Y30 to 10F
2) Assignment of remote I/O station No.2
Inputs (X) : X0 to BF
Outputs (Y) : Y80 to 19F
Fig 7.14 Inputs (X) and outputs (Y) assignment example
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