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MELSEC-QnA
15 FUNCTIONS (FUNCTION VERSION B OR LATER)
15.8 Remote I/O Net Mode
For the system configured only with the master station and the remote I/O stations,
communication can be performed without setting parameters.
15.8.1 Features
When the system is configured only with the master station and the remote I/O
stations, the following advantages can be obtained by the use of the remote I/O net
mode.
(1) The setting of network parameters can be eliminated.
(2) The data link start request need not be set.
(3) Because the link scan time is shortened, the input/output response speed is
increased more than that obtained by the use of the remote net mode.
15.8.2 Software version corresponding to master module and its CPU
Table 15.8 shows the software versions corresponding to the master modules and
their CPUs in the remote I/O net mode.
Table 15.8 Master modules and applicable CPU-compatible software versions
Master module, CPU type Corresponding software version
AJ61QBT11, A1SJ61QBT11 P (manufactured on Sep. 1998) or later
Q2ACPU (S1), Q3ACPU, Q4ACPU L (manufactured on Sep. 1998) or later
Q2ASCPU (S1), Q2ASHCPU (S1) T (manufactured on Sep. 1998) or later
15.8.3 Set item
When using the remote I/O net mode, set the following three items.
(1) Set the master station's mode setting switch to 1 (remote I/O net mode).
(2) Set the master station's station number setting switch to the last station number of
the remote I/O stations.
(3) Set the automatic refresh parameter using the software package.