T-Branch Connection - Mitsubishi Electric MELSEC-Q Series User Manual

6.2.3

T-branch connection

This section describes how to connect CC-Link dedicated cables in T-branch.
(1) T-branch system configuration
The following is a system configuration in T-branch.
Remote I/O station/
Remote device station
(Branch line)
Terminating resistor
[between DA and DB]
Remote I/O station/
Remote device station
Remote I/O station/
Remote device station
Remote I/O station/
Remote device station
A maximum of six stations
can be connected.
(a) Precautions
When the following modules are the master stations, change the procedure of connecting terminating resistors.
• AJ61BT11: Hardware version C or earlier
• AJ61QBT11: Hardware version C or earlier
• A1SJ61BT11: Hardware version D or earlier
• A1SJ61QBT11: Hardware version D or earlier
Connect the terminating resistors between DA and DB and between DA and DG. Use the following terminating
resistors and do not use the terminating resistors included with the module.
110
110
(Main line)
Remote I/O station/
Master
Remote device station
station
(Branch line)
Local station/
Intelligent device
station
The number of branch lines is determined by the branch line length per branch line and
the overall branch line length.
DA
DB
DG
SLD
FG
CHAPTER 6 INSTALLATION AND WIRING
T-branch
terminal block/connector
Local station/
Intelligent device
station
(Branch (Branch
line) line)
Remote I/O station/
Remote device station
Local station/
Remote I/O station/
Intelligent device
Remote device station
station
A maximum of six stations
can be connected.
110 ±5%, 1/2W × 4 pieces
(Connection between DA and DG and between DB and DG):
Connect a terminating resistor to each module at both ends
of the main line.
[Terminating resistor model name]
ERDS1TJ111: Manufactured by Panasonic Corporation
Ex.
Terminating resistor
[between DA and DB]
Remote I/O station/
Remote device station
79
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