52
(b) Communication specifications list of T-branch connection
The following table lists the communication specifications for the T-branch connection.
For the communication specifications not listed in the following table, refer to the performance specifications.
(
Page 21, Section 3.2)
Item
Specifications
Remarks
Transmission speed
625kbps
156kbps
10M/5M/2.5Mbps cannot be used.
Maximum length of the
main line
100m
500m
Cable length between the terminating resistors.
The cable length of T-branch (length of the branch line)
is not included.
Maximum length of the
branch line
8m
Total cable length per branch
Overall branch line
length
50m
200m
Total length of all branch cables
Maximum number of
modules on the branch
line
6 modules/branch
Total number of connected modules is in accordance
with the CC-Link specifications.
Connection cable
Ver.1.10-compatible CC-Link dedicated cable
Ver.1.10-compatible CC-Link dedicated cables made
by different manufacturers can be used in combination.
T-branch terminal
block/connector
• Terminal block
Commercially available terminal block
• Connector
FA sensor connector NECA4202
(IEC947-5-2) or equivalent is recommended.
(NECA: Nippon Electric Control Equipment Industries
Association Standards)
Avoid peeling the sheath of the cable on the main line
side whenever possible.
Maximum length of the
main line, length
between two T-branch
lines, and station-to-
station distance
Ver.1.10-compatible CC-Link dedicated cable (Terminating resistors of 110
are used.)
Transmission speed
Maximum length of the
main line
Length between two T-
branch lines
Distance between remote
I/O stations or remote
device stations
625kbps
100m
No limitation
30cm or more
156kbps
500m
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Bridge
module
Maximum length of the main line (the branch line length excluded)
Terminating
resistor
Terminating
resistor
The length between two T-branch lines
(Branch line length: 8m or shorter)
(Branch line length: 8m or shorter)
: Represents a remote I/O station or remote device station
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