T-Branch Connection With The Cc-Link Dedicated Cable; T-Branch System Configuration - Mitsubishi MELSEC Q Series User Manual

7 PROCEDURE BEFORE STARTING THE DATA LINK

7.6 T-Branch Connection with the CC-Link Dedicated Cable

7.6.1 T-Branch system configuration

Remote I/O station/
remote device station
Terminal resistor
[between DA and DB]
7 - 11
This section explains how to perform a T-branch connection using the CC-Link
dedicated cable.
The following shows a system configuration using T-branch connection.
(Main line)
Master
station
(Branch line)
Remote I/O station/
remote device station
Remote I/O station/
remote device station
Local station/
intelligent
device station
Remote I/O station/
remote device station
A maximum of 6 stations
can be connected
When the model name and hardware version of the master module are as indicated
below in a T-branch system configuration, change the terminating resistor connection
method as described below.
When using the other master module, connect the terminating resistor packed with the
product.
AJ61BT11 : Hardware version C or earlier
AJ61QBT11 : Hardware version C or earlier
A1SJ61BT11 : Hardware version D or earlier
A1SJ61QBT11 : Hardware version D or earlier
110Ω
[Connection]
110Ω
T-branch terminal
block/connector
Remote I/O station/
remote device station
(Branch line) (Branch
line)
Remote I/O station/
remote device station
The number of branch lines is determined by the branch line length
per branch line and the overall branch line length.
110 Ω ± 5 %, 1/2W × 4
DA
(Connect between DA and DG/DB and DG) ... both ends
DB
DG
Use a commercially available terminal resistor of
SLD 110 Ω ± 5% and 1/2 W resistance.
FG
110 Ω and 130 Ω resistors that are supplied with the
master/local modules cannot be used.
Local station/
intelligent
device station
(Branch line)
Remote I/O station/
remote device station
Local station/
intelligent
device station
A maximum of 6 stations
can be connected
MELSEC-Q
Terminal resistor
[between DA and DB]
Remote I/O station/
remote device station
7 - 11