Mitsubishi Electric MELSEC iQ-R Series User Manual page 37

Communication specifications for a T-branch connection
The following table lists the communication specifications upon T-branch connection.
For those not listed below, refer to the performance specifications. ( Page 17 Performance Specifications)
Item
Transmission speed
Maximum length of the main line
Maximum length of the branch line
Overall branch line length
Maximum number of connected
modules on the branch line
Connection cable
T branch terminal block
T branch connector
■Maximum length of the main line, distance between T-branches, and cable length between
stations
(4)
R
(4)
R
(3)
R
(3)
R
Master station
M
Remote I/O station or remote device station
R
Local station or intelligent device station
L/I
No. Item
(1) Maximum length of the main line (not including the branch line length)
(2) Distance between T branches
(3) Station-to-station cable length between remote I/O stations or remote device stations
(4) Station-to-station cable length between a master station, local station, or intelligent device station
and an adjacent station to the front or back
*1 This applies to a system configuration with a remote I/O station and remote device station.
*2 This applies to a system configuration including a local station and intelligent device station.
Specifications
625kbps
100m
8m
50m
6 stations per branch
Ver.1.10-compatible CC-Link dedicated cable
Commercially available terminal block
A connector for an FA sensor conforming to NECA4202 (IEC947-5-2) or
equivalent product is recommended.
(NECA: Nippon Electric Control Equipment Industries Association)
(1)
(4)
(3)
M R R
(4)
L/I
156kbps
500m
200m
(2)
(4)
(3)
R
R
(4)
(4) (3)
L/I R
Transmission speed
625kbps
100m
No restriction
30cm or more
1m or more
Remarks
10M, 5M, and 2.5Mbps cannot be
used.
A cable length between terminating
resistors.
The length (branch line length) of a T-
branch cable is not included.
A total cable length for each branch
A total length of all branch cables
The total number of connected
stations depends on the CC-Link
specifications.

Do not remove the jacket of the
cables on the branch line, if possible.
(4)
L/I L/I
(3) (3) (3)
R R R R
156kbps
500m
*1 *2
/2m or more
6 WIRING
6.4 T-branch Connection
6
35