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3 SPECIFICATION
MELSEC-QnA
3.2.1 Maximum overall cable distance (for Ver. 1.00)
The relationship between the transmission speed and the maximum overall cable
distance is described below:
(1) For a system consisting of only remote I/O stations and remote
device stations
Maximum overall cable distance
Remote I/O station
or remote
device station
Master station
Remote I/O station
or remote
device station
Remote I/O station
or remote
device station
Remote I/O station
or remote
device station
2
2 1 1
1 Cable length between remote I/O stations or remote device stations.
2 Cable length between the master station and the adjacent stations.
CC-Link dedicated cable (terminating resistor 110 Ω)
Station-to-station cable length
Transmission rate
1
2
Maximum overall cable distance
156 kbps 1200 m (3937.2 ft.)
625 kbps 600 m (1968.6 ft.)
2.5 Mbps
30 cm (11.81 in.) or more
200 m (656.2 ft.)
30 cm (11.81 in.) to
59 cm (23.23 in.)
110 m (360.9 ft.)
5 Mbps
60 cm (23.62 in.) or more 150 m (492.15 ft.)
30 cm (11.81 in.) to
59 cm (23.23 in.)
50 m (164.1 ft.)
60 cm (23.62 in.) to
99 cm (38.98 in.)
80 m (262.5 ft.)
10 Mbps
1 m (3.28 ft.) or more
1 m (3.28 ft.) or more
100 m (328.1 ft.)
CC-Link dedicated high performance cable (terminating resistor 130 Ω)
Station-to-station cable length
Transmission rate
1
2
Maximum overall cable distance
156 kbps 1200 m (3937.2 ft.)
625 kbps 900 m (2952.9 ft.)
2.5 Mbps 400 m (1312.4 ft.)
5 Mbps 160 m (524.96 ft.)
Number of connected
stations: 1 to 32
30 cm (11.81 in.) or more
100 m (328.1 ft.)
30 cm (11.81 in.) to
39 cm (15.35 in.)
80 m (262.5 ft.)
Number of connected
stations: 33 to 48
40 cm (15.75 in.) or more 100 m (328.1 ft.)
30 cm (11.81 in.) to
39 cm (15.35 in.)
20 m (65.52 ft.)
40 cm (15.75 in.) to
69 cm (27.17 in.)
30 m (98.43 ft.)
10 Mbps
Number of connected
stations: 49 to 64
70 cm (27.56 in.) or more
1 m (3.28 ft.) or more
100 m (328.1 ft.)
The cable length between remote I/O stations or remote device stations is within this range and if even one location is wired, the
maximum overall cable distance will be as indicated above.