Precautions For System Configuration - Mitsubishi Electric MELSEC Q Series User Manual

2.2.2
(1) QJ61CL12 position
Install the QJ61CL12 on either end of the trunk line.
Since T-branch connection is available, the module can be apparently installed on any position on the trunk line.
However, the trunk line length is defined as the length between the terminating resistors.
Terminating
*1
*2
*3
(2) Number of branch line levels
Up to two branch line levels can be configured in a CC-Link/LT system.
Three or more branch line levels cannot be configured.
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Precautions for system configuration

Trunk line length
Branch
*3
line
Power
length
resistor
supply
adapter
*2
*1
Branch line length
Remote
The branch line length includes the length of *2.
The maximum length of the branch line and overall branch line length include the length of this item.
For the terminating resistor connection method,
Remote
station
search engine
Master station
Terminating resistor
Remote Remote
station station
Remote
station
Station-to-station
distance
station
Remote
station
Page 59, Section 4.5.4.
Remote
station
Remote
station
The third branch line level cannot be configured.
Trunk line
Branch line
*3
*1
Branch line length
Remote
station
*2 *2 *2
Remote Remote
station station
Remote
station
Trunk line
Remote
Branch line
station