Mitsubishi MELSEC-L Series User manual

1
How to read this guide
The following shows the symbols used in this Quick start guide with descriptions and examples.
Symbol Description Example
This symbol explains information
you need to know.
Select [View] →[Comment] ( key + key). The
comment display/hide setting can be switched.
This symbol describes the
references of manuals and pages
for more details.
For details, refer to the following manual.
MELSEC-L CPU Module User's Manual
(Function Explanation, Program
Fundamentals)
: SH-080889ENG
This symbol describes the
explanations of the terminology.
Device : A place where ON/OFF or numeric values and
character string data is recorded in the
programmable controller.
This symbol describes content that
must be noted in operation. When mounting the module, the power must be turned off.
[ ] Menu names on the menu bar
([ ] → [ ] shows drop-down menus.) Select [Project] → [New project].
Buttons on the screen button
Keys on the keyboard key
( )
Another procedure corresponding
to a drop-down menu (icons and
keys on the keyboard)
Select [View] → [Comment] ( key + key).
Point Ctrl
F5
Reference
Terminolog
y
Caution
F4
Ctrl
F5

2
Introduction
This Quick start guide explains the basic procedures for the first-time use of the Mitsubishi
programmable controller MELSEC-L series CPU module (CPU module).
You can easily understand how to use the programmable controller with this guide.
Reference
●Precautions
Read "SAFETY PRECAUTIONS" in the MELSEC-L CPU Module User's Manual or "Safety
Guidelines" that is an included manual of CPU module carefully.
Caution
This Quick start guide explains operations in the programmable controller system described in
" System Configuration" (P.9).
Read the manuals referred on the following page when you design or manage the system.
"Related manuals" (P.6)
Mounting and wiring modules
Checking operations
Creating programs
0
3
X7X6
X8
Quick start
guide 100VAC 24VDC
󱦱

3
Operations that can be performed using
MELSEC-L series
■Programmable controllers
The programmable controllers perform sequence control and logical operations by switching the output
of output equipment ON/OFF according to the command signal from the input equipment.
Other equipment is shown below.
Terminology
Sequence control : Consecutively processes each control step based on the fixed order or
procedure.
Logical operations: One of the basic operation methods in programming.
Logical operations consist of three basic operations: logical AND, logical
OR, and logical NOT.
Limit switch : A switch to stop the movement of mobile objects on both sides of a moving
apparatus for safety reasons.
Relay : Breaks/connects the electricity with electrical switching.
Contactor : Generally called an electromagnetic contactor to break circuits and switch
the heater.
Solenoid valve : An electromagnet with a direct/alternating current. Connected to the output
side of the programmable controller.
Power Power
<Input equipment> <Programmable controller> <Output equipment>
Push-button
switch
Input module
Operation
Input interface
Output interface
Memory
CPU module Output module
Data
Program
Personal computer
Creating and
debugging programs
<Examples of input equipment>
Limit switch Input relay Switch
<Examples of output equipment>
Contactor Solenoid valve

4
■Features of CPU module
MELSEC-L series programmable controllers are all-in-one programmable controllers that have the
following functions built into the CPU module. The use of these built-in functions enables you to design
a smaller-scale system.
* The illustration represents
L26CPU-BT.
Positioning function
High-speed counter function
Secure data collection is possible
with just simple setting.
CSV
format
Saving to the SD
memory card in the
CSV format is
possible.
Setting
:
18:55:18 67,723,36,0
18:55:19 68,741,36,0
18:55:20 69,712,36,1
18:55:20 70,724,36,1
18:55:20 71,732,36,1
18:55:20 72,733,
18:55:16 65,725,36,1
18:55:17 66,756,36,0
General-purpose input function Interrupt input function Pulse catch function
GX Works2 GX Works2 GOT
CC-Link
Hub
Ethernet
Vision sensor
General-purpose output function
Built-in Ethernet function
A maximum of 16 external devices can be connected via
a hub.
The reading/writing of the device data of the CPU module
and the sending/receiving of the data of the other
connected devices can be performed to/from a personal
computer and GOT.
MELSEC-L CPU Module User's Manual
(Built-in Ethernet functions): SH-080891ENG
Built-in I/O function
Single function exclusive modules become unnecessary, and
a smaller-scale system can be configured using only LCPU.
Therefore, system cost reduction can be realized.
MELSEC-L CPU Module User's Manual
(Built-in I/O functions): SH-080892ENG
Data logging function
Logging can be performed under various conditions
using the exclusive configuration tools. The collected data
can be saved to the SD memory card in the CSV format.
MELSEC-L CPU Module User's Manual
(Data logging functions) : SH-080893ENG
Built-in CC-Link function
I/O modules, intelligent function modules, and special function
modules, which are arranged separately, can be controlled with
the CPU module. In addition, a simple separately-configured system
can be designed by connecting multiple CPU modules using CC-Link.
*CC-Link function is only built into L26CPU-BT.
MELSEC-L CC-Link System Master/Local Module
User's Manual : SH-080895ENG

5
■System enhancement according to application
By connecting various types of modules, the system can be enhanced according to the application. As a
baseless structure is employed, the space of the control panel can be used effectively without being
limited by the size of the base.
Display unit
SD memory card
Power supply module
USB connection
CPU module END cover
RS-232 adapter
I/O module
or
intelligent function module
GX Works2
* The illustration represents
an L02CPU CPU module.
Attached when connecting to GOT.
MELSEC-L CPU Module User's Manual
(Hardware Design, Maintenance and
Inspection): SH-080890ENG
RS-232 adapter (optional)
SD memory card (optional)
Using an SD memory card enables the
following functions to be used.
Data logging function
Boot operation via the SD memory
card
Backing up data to the SD memory
card
Restoring backup data
MELSEC-L CPU Module User's Manual
(Function Explanation, Program
Fundamentals) : SH-080889ENG
MELSEC-L CPU Module User's
Manual (Data logging functions)
: SH-080893ENG
This is a programming tool to design,
debug, and maintain sequence programs
on a Windows personal computer.
GX Works2 Version 1 Operating
Manual (Common) : SH-080779ENG
Programs can also be created
effectively using FB (Function Block).
Mitsubishi integrated FA software
MELSOFT GX Works2 FB Quick
start guide : L08182ENG
GX Works2
Display unit (optional)
The system status can be
confirmed and the system
setting values can be
changed by attaching this
to the CPU module.
MELSEC-L CPU Module
User's Manual (Function
Explanation, Program
Fundamentals)
: SH-080889ENG
END cover
Provided with the CPU
module. Be sure to connect
an END cover on the right
of the terminal module.
MELSEC-L CPU Module
User's Manual
(Hardware Design,
Maintenance and
Inspection)
: SH-080890ENG
The following modules can be attached
as required.
I/O modules
Analog I/O modules
Serial communication modules
Manual for each module
I/O module or intelligent
function module

6
Related manuals
This Quick start guide explains the basic procedures for introducing programmable controllers.
Read the following manuals to use each module with a full understanding according to your purpose.
■Learning about programmable controllers
■Learning about programming tools (software)
● MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection) . . . SH-080890ENG
This manual explains specifications, installation, and maintenance methods for the CPU
module and the power supply module.
●
MELSEC-L CPU Module User's Manual (Function Explanation, Program Fundamentals) . . . .SH-080889ENG
This manual explains the functions of the CPU modules.
It also explains the operations of devices, parameters, and display unit that are the basic
knowledge necessary for programming.
●GX Works2 Beginner's Manual (Simple Project). . . . . . . . . . . . . . . . . . . . . . . . . .SH-080787ENG
This manual explains the basic operations for creating, editing, and monitoring programs on
simple projects for operators who are using GX Works2 for the first time.
●GX Works2 Version 1 Operating Manual (Common) . . . . . . . . . . . . . . . . . . . . . .SH-080779ENG
This manual explains the common functions of both the simple and structured projects of GX
Works2, including the operation methods for system configurations, parameter settings, and
online functions.

7
Using programmable controllers
The programmable controllers are installed with procedures as shown below.
" Preparing for Operation" (P.8)
Preparing the necessary equipment
" System Configuration" (P.9)
Introducing equipment used for operations in this Quick start guide
" Mounting Modules" (P.10)
Mounting the prepared modules
" Wiring Modules" (P.12)
Wiring the power supply module and the external I/O devices
" Checking Power Supply" (P.15)
Turning on the system to check the condition of the CPU module
" Programming" (P.16)
Creating a program with GX Works2
" Writing Programs" (P.22)
Writing a program created with GX Works2 to the CPU module
" Checking Operation" (P.25)
Executing the program by turning the CPU module to RUN and checking
that ON/OFF of inputs correspond to ON/OFF of output

8
Preparing for Operation
■Preparing the necessary equipment
*GX Works2 Version 1 needs to be installed in your personal computer in advance.
Pro
g
rammable controller Personal computer GX Works2
A6CON1
External power supply DIN rail
(Including DIN rail
stopper)
Explanations for each
module are on the next page
Windows personal computer
Version1.20W
USB mini B type
Install*
Lamp SwitchUSB cable

9
System Configuration
■System configuration example
This Quick start guide explains the following system configuration as an example.
Inputs and outputs are configured as switches and lamps respectively.
* Wires to the power supply module and the power of the external I/O devices are omitted.
No. Name Model Description
Power supply
module L61P Supplies power to modules such as
CPU module.
CPU module L02CPU Integrates the control of the
programmable controller.
END cover L6EC
Supplied with the CPU module. Be
sure to connect an END cover on the
right of the terminal module.
Connection cable
(USB cable)
MR-J3USBCBL3M
(USB A type - USB mini B type)
Connects the personal computer with
GX Works2 installed and the CPU
module.
DIN rail
(IEC 60715)
• TH35-7.5Fe
• TH35-7.5Al
• TH35-15Fe
The programmable controller system
is secured by attaching it to the DIN
rail.
DIN rail stopper −Use DIN rail stoppers that can be
attached to the DIN rails.
External power
supply −
Supplies power to the external I/O
devices. Use the CE marked models
and be sure to perform grounding for
the FG terminal.
Switch (input) Lamp (output)Programmable controller
①
②
③
④
⑤
⑥
⑦

10
Mounting Modules
Mount the prepared modules.
A battery connector must be connected when using the CPU module for the first time.
■Mounting modules
Caution
The power supply must be disconnected when mounting modules.
Point
●Connect a battery in the CPU module by the following procedure.
Release the module joint
levers located on the top and
bottom of the CPU module.
(Slide them towards the front
of the module.)
Install the modules by
inserting the connectors of
the CPU module and the
power supply module straight
so that they can be engaged.
Lock the module joint levers
located on the top and
bottom of the CPU module.
(Slide them towards the back
of the module.)
Using the same
procedure, attach the
END cover.
Complete
to
Open the cover at the
bottom of the CPU module.
Confirm the directions of
the connectors, and insert
the battery side connector
into the CPU module side
connector.
Close the cover at the
bottom of the CPU module.
CPU module
side
connector
Battery side
connector
Battery
CPU module
Complete

11
■Mounting Modules to DIN Rail
DIN rail
stopper
DIN rail
Engage the claw with
the top of the DIN rail.
Claw
Claw
Pull down all the DIN rail
hooks on the back of the
modules. (Pull them down
until they click.)
Engage the claws at the top
of the modules with the top
of the DIN rail, and then
insert the DIN rail to install.
Engage the claw at the
bottom of a DIN rail
stopper with the bottom of
the DIN rail, and then engage
the claw at the top of the DIN
rail stopper with the top of
the DIN rail.
(Engage the DIN rail stopper
after confirming the arrow
indication on the front surface
of the DIN rail stopper.)
Lock the DIN rail hooks of
the modules to
engage them
with the DIN rail.
(Push them up until they click.
If your finger does not reach
the DIN rail hook, use a
screwdriver, etc.)
Loosen the screws of the
DIN rail stoppers.
Slide the DIN rain stopper to
the edge of the module and
tighten the screw using a
screwdriver.
(Using the same procedure,
attach a DIN rail stopper to
other side of the module.)

12
Wiring Modules
Wire the power supply module and the external I/O devices.
■Wiring the power supply module
The following shows an example of wiring the power line and the ground wire.
Grounding is performed to prevent electric shocks and malfunctions.
Caution
The power supply must be disconnected when wiring modules.
Reference
For details of wiring precautions, refer to the following manual.
MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection)
: SH-080890ENG
FG
LG
INPUT
100-240VAC
Connect the
100VAC power
supply to the
power input
terminals via
the breakers and
the isolation
transformers.
Connect the LG
and FG terminals
to the ground.
Power supply module
(L61P)
Ground wire
Grounding
100/200VAC
AC

13
■Wiring connector for external devices
The following shows an example of wiring the connectors for external devices.
Caution
The pin arrangements of the connectors for external devices differ considerably from those of
the I/O modules. Be sure to confirm the flat cable arrangement in the illustration shown above
before connection.
A6CON1
Switch 1
Signal: X6
Switch 2
Signal: X7
Switch 3
Signal: X8
Lamp 2
Signal: Y6
Lamp 3
Signal: Y7
Lamp 1
Signal: Y0
External power supply
Output common
Input
common
The flat cable arrangement and section to be
connected are as shown below. (Viewed from
the insertion point of the connector)
Switch 3 (X7)
Lamp 3 (Y7)
Output common
Input common
Switch 1 (X6)
Switch 2 (X8)
Lamp 1 (Y0)
Lamp 2 (Y6)
L
L
L
B20 A20
B19 A19
B18 A18
B17 A17
B16 A16
B15 A15
B14 A14
B13 A13
B12 A12
B11 A11
B10 A10
B09 A09
B08 A08
B07 A07
B06 A06
B05 A05
B04 A04
B03 A03
B02 A02
B01 A01

14
Point
Wire the power supply lines for the I/O equipment and the programmable controller separately
as shown below.
Terminology
Isolation transformer : A two-winding transformer. The primary and secondary coils are wound
separately to protect the secondary load.
Control panel : This is a panel that consists of breakers, switches, protection devices,
relays, and programmable controllers, etc.
By combining them, the panel performs the following operation.
• Receiving signals from external switches and sensors
• Suppling electricity to operate motors and solenoid valves of external
machines and equipment
• Giving the signals to other equipment.
100/200VAC
Main
power
supply
Relay
terminal
block
Programmable
controller
power supply
Programmable
controller
I/O power supply
Isolation
transformer
Inside of control panel
I/O equipment
T1

15
Checking Power Supply
Check that the power supply runs normally after configuring the system, mounting modules, and wiring.
Operating procedure
1. Check before turning on the power supply.
• Wiring of the power supply
• Power supply voltage
2. Set the CPU module to STOP.
Open the cover on the front of the CPU module and set the
switch to STOP.
3. Turn on the power supply module.
4. Check that the power supply runs normally.
Check the front LEDs on each module.
The following shows the normal state of the LEDs.
Power supply module: "POWER" LED lights in
green.
CPU module: "MODE" LED lights in green.
When a parameter or program is not written to the
CPU module, the "ERR." LED flashes red, but it is not
a problem at this stage.
The LED goes off when a program is written.
" Writing Programs" (P.22)
Construction of the system is complete.
Turn off the power supply.
Point
●If the "POWER" LED of the power supply module is off, even though the power is turned on, check
the wiring and installation statuses to confirm whether or not they are correct.
●If the "BAT." LED of the CPU module is flashing, check whether the battery has been correctly
connected.
Terminology
Parameter : Setup information necessary to operate the programmable controller system.
Modules and the network are set by writing parameters to the CPU module.
RESET/STOP/RUN
①
②
󱦻
"ERR." LED
flashes red.

16
Programming
Create a program (sequence program) for sequence control.
■"Devices" and "Instruction symbols" in programming
Combine "Devices" and "Instruction symbols" to create a sequence program.
1. Devices
Devices include bit devices and word devices.
Bit device : Handles one-bit information such as the ON/OFF of a switch or a lamp.
Examples of bit devices
Word device : Handles 16-bit information such as numeric values and character strings.
Examples of word devices
Device name Device symbol Description
Input X Receives a signal from an external device such as a switch.
Output Y Outputs a signal to an external device such as a lamp.
Internal relay M Temporarily saves data status in programs.
Timer (contact) T Used to measure time.
(When the set time comes, the contact is set to ON.)
Counter (contact) C
Used to count the number of times the input condition turns from
OFF to ON. (When the counter reaches the set number, the
contact is set to ON.)
Device name Device symbol Description
Data register D Registers numeric values and character strings.
Timer (current value) T Used to measure time.
(Stores the current value of measuring time.)
Counter (current value) C Used to count the number of times the input condition turns from
OFF to ON. (Stores the current value of the counter.)
Terminology
Device : A location to store data such as ON/OFF, numeric values, and character strings
in the programmable controller.
Internal relay : Breaks/connects the sequential circuit by switching ON/OFF.
Contact : An input used when creating a sequence program.
①
ON/OFF of a switch ON/OFF of a lamp
②
Numeric value Character string

17
2. Instruction symbols
The following shows the basic instructions of sequence control.
■Creating a program
Create a sequence program for rehearsal.
The following shows how to create a sequence program with basic devices and instruction symbols for
sequence control.
The following devices and instruction symbols are used.
• Input : "X" device
• Output : "Y" device
• Instruction symbols : , ,
Create a program that performs the following controls.
• When the X6 and X7 switches are turned on, the Y0 output lamp turns on.
• When the X8 switch is turned on, the Y6 and Y7 output lamps turn off.
The following explains the procedure to create this sequence program.
Instruction
symbol Description
Open contact: Conducts when an input signal is set to ON.
Closed contact: Conducts when an input signal is set to OFF.
Coil output: Outputs data to a specified device.
Terminology
Coil : An output used when creating a sequence program.
Reference
This section explains the most basic devices and instructions.
In addition to those listed above, other devices and instructions convenient for sequence
control are available.
MELSEC-Q/L Programming Manual (Common Instructions):SH-080809ENG
X6
X7
X8
Y0
Y6
Y7
<Y0>
<Y6>
<Y7>
[END]
0
3
6
X7X6
X8

18
■Starting GX Works2
Operating procedure
Select [Start] →[All Programs] →[MELSOFT
Application] →[GX Works2] →[GX Works2].
After starting, the GX Works2 main screen is
displayed.
■Creating a new project
A project consists of programs, device comments, and parameters.
Operating procedure
Select [Project] →[New...].
Select "LCPU".
Select the LCPU to be used (L02 in this guide).
Click the button.
A project tree and a ladder screen are displayed.
Ladder screen
Project tree