Mitsubishi MELSEC-A Series Reference Manual page 178

7. DATA LINK SETTINGS
(3) Assignment of inputs (X) and outputs (Y)
(a) Input and output range used for data link by the master station
The master station uses the X/Y0 to X/Y14F range as I/O of host station.
For the data link, the X/Y150 to X/Y7FF range can be used.
(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.4
Inputs (X): X0 to BF
Outputs (Y): Y80 to 19F
(c) Assignment of local stations
In this example, inputs (X) and outputs (Y) are not required because there is
empty area in the link relay (B) assignment. However, to simplify the explanation,
128 input (X) points and 128 output (Y) points are assigned.
1) Assignment of local station No.2
Local station No.2 uses the X/Y0 to X/Y17F range as I/O of host station. For
the data link, the X/Y180 to X/Y7FF range can be used.
2) Assignment of local station No.3
Local station No.3 uses the X/Y0 to X/Y14F range as I/O of host station. For
the data link, the X/Y150 to X/Y7FF range can be used.
Fig 7.19 Input (X) and output (Y) assignment example
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