T-Branch Communication Specifications List - Mitsubishi Electric MELSEC QS Series User Manual

7
PROCEDURE BEFORE STARTING THE DATA LINK

7.7.2 T-Branch communication specifications list

The following describes the communication specifications for T branch connection.
For communication specifications not listed below, see Section 3.1.
Item
Transmission speed 625kbps
Maximum length 100m
of the main line (328.1 ft.)
Maximum length
of the branch line
Overall branch line
50 m (164.05 ft.)
length
Maximum number
of connected
stations on the
branch line
• Ver.1.10 compatible CC-Link
Connection cable dedicated cable
• CC-Link dedicated cable
• Terminal block: Off-the-shelf terminal
block
T branch terminal
• Connector: FA sensor connector
block/connector
equivalent to ICE947-5-2 is
recommended.
Ver.1.10 compatible CC-Link dedicated cable, CC-Link dedicated cable (uses 110 W terminating
Maximum length
resistor)
of main line,
distance between
Transmission
speed
T branches, and
length of cable
625kbps
between stations
156kbps
Maximum length of main line (not including the branch line length)
Terminal
registor
*2
R
*2
R
*1
R
*1
R
(Length of branch line: 8m (26.25ft.) or shorter)
Specification
156kbps
500m
(1640.5 ft.)
8m(26.25 ft.)
200 m (656.2 ft.)
6 stations per branch
Maximum length Distance between
of main line T branches
100 m (328.1 ft.)
No limit
500 m (1640.5 ft.)
*2
*1
Master
R
station
*1
R
R
7.7 T-Branch Connection with the CC-Link Dedicated Cable
7.7.2 T-Branch communication specifications list
For 10, 5, or 2.5Mbps, form T-branching using repeaters.
Indicates the length of the cable between terminating
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.
• Mixing of different brands of Ver. 1.10 compatible CC-Link
dedicated cables is allowed.
• Mixing of different brands of CC-Link dedicated cables is
not allowed.
• The CC-Link dedicated high-performance cable cannot be
used.
• When wiring cables for the main line side, try not to remove
the covering as much as possible.
Length of cable between
the remote I/O stations or
remote device stations *1
30 cm (11.8 in.) or longer
Distance between T branches
*1
*1
R R
R
*1
*1
R R
(Length of branch line: 8m (26.25ft.) or shorter)
Indicates a remote I/O station or a remote device station.
Remarks
Length of cable between the
safety master station and the
pervious/next station *2
1m or longer
Terminal
registor
*1
*1
R R
*1 *1 *1 *1
R R R
1
2
3
4
5
6
7
8
R
7
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