Mitsubishi MELSEC-A Series Reference Manual page 33

2. TWO-TIER SYSTEM IN THE MELSECNET DATA LINK SYSTEM
(4) Using MELSECNET mode and MELSECNET mode-compatible modules in the
same network
The link module which can be connected to MELSECNET data link system includes
the MELSECNET mode-compatible link module and the MELSECNET mode-
compatible link module.
The MELSECNET data link system even allows MELSECNET mode-compatible
modules and MELSECNET mode-compatible modules to be used in the same
network.
The MELSECNET mode-compatible link module can also be connected to the
data link system of the operating MELSECNET mode.
The MELSECNET data link system has parameters for setting its operation mode so
that various combinations of system configuration are possible.
The operation mode includes MELSECNET mode, MELSECNET mode, and
MELSECNET composite mode.
Refer to Section 1.2 for details on the differences between these modes.
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