Applicable System; Precautions For System Configuration - Mitsubishi Melsec-L Series User Manual

5.2

Applicable System

This section describes a MELSEC-L series system using a master module.
(1) Number of connectable modules
For the number of connectable modules, refer to the following.
MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection)
MELSEC-L CC-Link IE Field Network Head Module User's Manual
The number of connectable modules depends on the number of I/O points of the CPU module used and the
number of occupied I/O points setting for the master module.
(2) Compatible software version
GX Works2 is required for executing CC-Link/LT diagnostics and configuring intelligent function module switches.
GX Developer cannot be used.
5.3

Precautions for System Configuration

(1) Master module position
Install the master module on either end of the trunk line.
Since T-branch connection is available, the master 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.
Branch
*3
line
Terminating
length
resistor
Branch line length
*1 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 *2.)
*3 For the terminating resistor connection method, refer to
Software
GX Works2
Trunk line length
Power Remote
supply
station
adapter
*2
Remote
*1
station
Station-to-station
distance
Remote
station
CHAPTER 5 SYSTEM CONFIGURATION
Version 1.62Q or later
Master station
*3
Terminating resistor
Branch line length
*2 *2
Remote Remote
station station
Remote
station
Remote
station
Remote
station
Page 46, Section 6.3.4.
Version
*1
Remote
station
*2
Remote
station
Trunk line
Branch line
5
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