T-Branch Communication Specifications List - Mitsubishi MELSEC Q Series User Manual

7 PROCEDURE BEFORE STARTING THE DATA LINK

7.6.2 T-Branch communication specifications list

Item
Transmission rate
Maximum length of the main line
Maximum length of the branch line
Overall branch line length
Maximum number of connected
stations on the branch line
Connection cable
T branch terminal block/connector
Maximum length of main line, distance
between T branches, and length of
cable between stations
Terminal
resistor
R
2
1
1
(Length of branch line: 8m (26.25 ft.) or shorter)
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The following describes the communication specifications for T branch connection.
For communication specifications not listed below, see Section 3.1.
Specification
625 kbps
100 m
(328.1 ft.)
8 m (26.25 ft.)
50 m (164.05 ft.)
6 stations per branch
CC-Link dedicated cable
Ver. 1.10 compatible CC-Link dedicated cable
Terminal block: Off-the-shelf terminal block
Connector: Connector for the FA sensor
(ICE947-5-2) comparable product is recommended
CC-Link dedicated cable, Ver.1.10 compatible CC-Link dedicated cable (uses 110 Ω terminal resistor)
Transmission Maximum length
rate of main line
625 kbps 100 m (328.1 ft.)
156 kbps 500 m (1640.5 ft.)
3: The cable length of 1m (3.28 ft.) or longer is for a system configured only with remote I/O stations and remote
device stations.
4: The cable length of 2m (6.56 ft.) or longer is for a system configuration that contains local stations and intelligent
device stations.
Maximum length of main line (not including the branch line length)
2 2
Master station
2
R
L/I
R
R
156 kbps
500 m
(1640.5 ft.)
200 m (656.2 ft.)
Length of cable between the
Distance
remote I/O stations or remote
between T
branches device stations
No limit 30 cm (11.8 in.) or longer
Distance between T branches
1 1
R R R
2
L/I
(Length of branch line: 8m (26.25 ft.) or shorter)
R
Indicates a remote I/O station or a remote device station.
L/I Indicates a local station or an intelligent device station.
MELSEC-Q
Remarks
10 M/5 M/2.5 Mbps are not allowed.
Indicates the length of the cable between terminal
resistors. The length of the T branch cable (branch line
length) is not included.
Indicates the overall cable length per branch.
Indicates the overall length of the entire branch cable.
The total number of connected stations depends on the
CC-Link specifications.
The CC-Link dedicated high-performance cable
cannot be used.
Mixing of different brands of CC-Link dedicated
cables is not allowed.
Mixing of different brands of Ver. 1.10 compatible
CC-Link dedicated cables is allowed.
When wiring cables for the main line side, try not to
remove the covering as much as possible.
Length of cable between the
master/local station or
intelligent device station and
1
the adjacent station(s)
1 m (3.28 ft.) or longer (
2 m (6.56 ft.) or longer (
2
2
L/I L/I
2
R
2
1 1 1
R R R
2
3
)/
4
)
Terminal
resistor
1
R R
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