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4 FUNCTIONS
MELSEC-Q
4.4.4 Communicating with intelligent device stations (Remote net mode)
The remote net mode allows communication with all stations (remote I/O stations,
remote device stations, local stations, intelligent device stations, and standby master
stations). Furthermore, it allows not only cyclic transfer, but also transient transmission,
which transfers data at an arbitrary timing, to intelligent and local stations.
[Setting method]
Set the remote net mode in "Mode" of the network parameters using the
GX Developer. For more details on the setting, see Sections 6.3 to 6.5.
4.4.5 Speeding up the response from remote I/O stations (Remote I/O net mode)
The remote I/O net mode can be used for a system consisting of only the master
station and remote I/O stations. The remote I/O net mode allows cyclic transmission at
high speed, thus shortening the link scan time.
The table below lists the link scan times for both the remote I/O net mode and the
remote net mode.
Table 4.7
Number of stations
Remote I/O net mode
Remote net mode
8
0.61 ms
1.2 ms
16
0.94 ms
1.6 ms
32
1.61 ms
2.3 ms
64
2.94 ms
3.8 ms
(Transmission rate: at 10 Mbps)
[Setting method]
Set the remote I/O net mode in "Mode" of the network parameters
using GX Developer. For more details on the setting, see Section 6.6.
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