Mitsubishi Electric MELSEC Q Series User manual

MELSEC-Q/L AnyWire DB A20 Master Module
User's Manual
-QJ51AW12D2
-LJ51AW12D2

1
COPYRIGHT
This document is protected by the law of copyright, whereby all rights established therein remain with the company
Mitsubishi Electric Corporation. Reproduction of this document or parts of this document is only permissible within the
limits of the legal determination of Copyright Law. Alteration or abridgement of the document is not permitted without
the explicit written approval of the company Mitsubishi Electric Corporation.
PRECAUTIONS REGARDING WARRANTY AND
SPECIFICATIONS
The QJ51AW12D2 and LJ51AW12D2 were jointly developed and manufactured by Mitsubishi and Anywire
Corporation.
Note that there are some precautions regarding warranty and specifications of this product.
<Warranty>
<Specifications>
The general specifications of the QJ51AW12D2 are the same as those of other MELSEC-Q series except under the
following condition.
When setting the transmission clock at 125kHz by using the master module whose serial number (sixth digit) is 5 or
earlier, apply within the following specified range:
Voltage range of external power supply: 21.6 to 25.2VDC
Operating ambient temperature: 0 to 50
The general specifications of the LJ51AW12D2 are the same as those of other MELSEC-L series.
<Application of the EMC Directive>
*1 The master module with a serial number where the sixth digit is "3" or later complies with this standard.
Item QJ51AW12D2, LJ51AW12D2
Other programmable controller
products
(e.g. MELSEC-Q series)
Repair term after discontinuation of
production 1 years 7 years
Item QJ51AW12D2 LJ51AW12D2
Other programmable controller
products
(e.g. MELSEC-Q series)
Applicable EMC standard EN61131-2*1 EN61131-2 EN61131-2

2
<Application of the UL/cUL standards>
*2 The master module with a serial number where the sixth digit is "4" or later complies with this standard.
*3 The master module with a serial number where the sixth digit is "2" or later complies with this standard.
Item QJ51AW12D2 LJ51AW12D2
Other programmable controller
products
(e.g. MELSEC-Q series)
Applicable UL standard/cUL standard UL508*2
CSA22.2 *2
UL508*3
CSA22.2*3
UL508
CSA22.2

3
SAFETY PRECAUTIONS
(Read these precautions before using this product.)
Before using this product, please read this manual and the relevant manuals carefully and pay full attention
to safety to handle the product correctly.
The precautions given in this manual are concerned with this product only. For the safety precautions of the
programmable controller system, refer to the user's manual for the CPU module used.
In this manual, the safety precautions are classified into two levels: " WARNING" and " CAUTION".
Under some circumstances, failure to observe the precautions given under " CAUTION" may lead to
serious consequences.
Observe the precautions of both levels because they are important for personal and system safety.
Make sure that the end users read this manual and then keep the manual in a safe place for future
reference.
WARNING
CAUTION
Indicates that incorrect handling may cause hazardous conditions,
resulting in death or severe injury.
Indicates that incorrect handling may cause hazardous conditions,
resulting in minor or moderate injury or property damage.

4
When the QJ51AW12D2 is used
[Design Precautions]
[Design Precautions]
[Security Precautions]
WARNING
●An AnyWire DB A20 system has no control function for ensuring safety.
●When connecting a peripheral with the CPU module or a personal computer with an intelligent
function module to modify data of a running programmable controller, configure an interlock circuit in
the sequence program to ensure that the entire system will always operate safely. For other forms of
control (such as program modification or operating status change) of a running programmable
controller, read the relevant manuals carefully and ensure that the operation is safe before
proceeding. Especially, when a remote programmable controller is controlled by an external device,
immediate action cannot be taken if a problem occurs in the programmable controller due to a
communication failure. To prevent this, configure an interlock circuit in the sequence program, and
determine corrective actions to be taken between the external device and CPU module in case of a
communication failure.
●Do not write any data to the "system area" of the buffer memory in the intelligent function module.
Also, do not use any "use prohibited" signals as an output signal from the CPU module to each
module. Doing so may cause malfunction of the programmable controller system.
CAUTION
●Although an AnyWire DB A20 system features high noise immunity, keep a distance of 100mm or
more between the transmission cables or I/O cables and the high-voltage cables or power cables.
Failure to do so may cause malfunction.
●Configure safety circuits, such as an emergency stop circuit and interlock circuit, external to the
AnyWire DB A20 system.
WARNING
●To maintain the security (confidentiality, integrity, and availability) of the programmable controller and
the system against unauthorized access, denial-of-service (DoS) attacks, computer viruses, and other
cyberattacks from external devices via the network, take appropriate measures such as firewalls,
virtual private networks (VPNs), and antivirus solutions.

5
[Installation Precautions]
WARNING
●Use the programmable controller in an environment that meets the general specifications in the user's
manual for the CPU module used.
Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of the
product.
●To mount the module, while pressing the module mounting lever located in the lower part of the
module, fully insert the module fixing projection(s) into the hole(s) in the base unit and press the
module until it snaps into place.
Incorrect interconnection may cause malfunction, failure, or drop of the module.
When using the programmable controller in an environment of frequent vibrations, fix the module with
a screw.
Tighten the screw within the specified torque range.
Undertightening can cause drop of the screw, short circuit, or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
●Shut off the external power supply (all phases) used in the system before mounting or removing a
module.
Failure to do so may result in damage to the product.
●Do not directly touch any conductive parts and electronic components of the module.
Doing so can cause malfunction or failure of the module.

6
[Wiring Precautions]
CAUTION
●Tighten the terminal block screws within the specified torque range.
Undertightening can cause short circuit, fire, or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
●Prevent foreign matter such as dust or wire chips from entering the module.
Such foreign matter can cause a fire, failure, or malfunction.
●A protective film is attached to the top of the module to prevent foreign matter, such as wire chips,
from entering the module during wiring.
Do not remove the film during wiring.
Remove it for heat dissipation before system operation.
●Incorrect wiring may damage modules and external devices.
Adjust a cable length and a module position to prevent disconnection of a connector type terminal
block or a cable.
●Do not solder stranded wires of a cable when connecting them to the terminal block. Doing so may
cause poor contact.
●The power supply voltage of remote slave modules may be insufficient due to a voltage drop in the
power supply line. Connect an external power supply so that the voltage of remote slave modules is
ensured.
●Do not apply the 24VDC power before wiring the entire AnyWire DB A20 system. If the power is
applied before wiring, normal data transmission is not guaranteed.
●Use 24VDC stabilized power supplies for devices in the AnyWire DB A20 system.
●Do not install the control lines or communication cables together with the main circuit lines or power
cables.
Failure to do so may result in malfunction due to noise.
●Place the cables in a duct or clamp them.
If not, dangling cable may swing or inadvertently be pulled, resulting in damage to the module or
cables or malfunction due to poor contact.
●When disconnecting the cable from the module, do not pull the cable by the cable part.
For the cable connected to the terminal block, loosen the terminal screw.
Pulling the cable connected to the module may result in malfunction or damage to the module or
cable.

7
[Startup and Maintenance Precautions]
[Startup and Maintenance Precautions]
[Disposal Precautions]
WARNING
●Do not touch any terminal while power is on. Doing so will cause electric shock or malfunction.
●Shut off the external power supply (all phases) used in the system before cleaning the module or
retightening the terminal screws or module fixing screws.
Failure to do so may result in electric shock.
Undertightening the terminal screws can cause short circuit or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
CAUTION
●Do not disassemble or modify the modules. Doing so may cause failure, malfunction, injury, or a fire.
●Shut off the external power supply (all phases) used in the system before mounting or removing a
module.
Failure to do so may cause the module to fail or malfunction.
●After the first use of the product, do not mount/remove the module to/from the base unit, and the
terminal block to/from the module more than 50 times (IEC 61131-2 compliant) respectively.
Exceeding the limit of 50 times may cause malfunction.
●Before handling the module, touch a grounded metal object to discharge the static electricity from the
human body.
Failure to do so may cause the module to fail or malfunction.
CAUTION
●When disposing of this product, treat it as industrial waste.

8
When the LJ51AW12D2 is used
[Design Precautions]
[Design Precautions]
[Security Precautions]
WARNING
●An AnyWire DB A20 system has no control function for ensuring safety.
●When connecting a peripheral with the CPU module or a personal computer with an intelligent
function module to modify data of a running programmable controller, configure an interlock circuit in
the sequence program to ensure that the entire system will always operate safely. For other forms of
control (such as program modification or operating status change) of a running programmable
controller, read the relevant manuals carefully and ensure that the operation is safe before
proceeding. Especially, when a remote programmable controller is controlled by an external device,
immediate action cannot be taken if a problem occurs in the programmable controller due to a
communication failure. To prevent this, configure an interlock circuit in the sequence program, and
determine corrective actions to be taken between the external device and CPU module in case of a
communication failure.
●Do not write any data to the "system area" of the buffer memory in the intelligent function module.
Also, do not use any "use prohibited" signals as an output signal from the CPU module to each
module. Doing so may cause malfunction of the programmable controller system.
CAUTION
●Do not install the control lines or communication cables together with the main circuit lines or power
cables.
Keep a distance of 100mm or more between them. Failure to do so may result in malfunction due to
noise.
●Configure safety circuits, such as an emergency stop circuit and interlock circuit, external to the
AnyWire DB A20 system.
WARNING
●To maintain the security (confidentiality, integrity, and availability) of the programmable controller and
the system against unauthorized access, denial-of-service (DoS) attacks, computer viruses, and other
cyberattacks from external devices via the network, take appropriate measures such as firewalls,
virtual private networks (VPNs), and antivirus solutions.

9
[Installation Precautions]
[Installation Precautions]
WARNING
●Shut off the external power supply (all phases) used in the system before mounting or removing the
module.
Failure to do so may result in electric shock or cause the module to fail or malfunction.
CAUTION
●Use the programmable controller in an environment that meets the general specifications in the Safety
Guidelines provided with the CPU module or head module. Failure to do so may result in electric
shock, fire, malfunction, or damage to or deterioration of the product.
●To interconnect modules, engage the respective connectors and securely lock the module joint levers.
Incorrect interconnection may cause malfunction, failure, or drop of the module.
●Tighten the screws within the specified torque range. Undertightening can cause drop of the screw,
short circuit, or malfunction. Overtightening can damage the screw and/or module, resulting in drop,
short circuit, or malfunction.
●Do not directly touch any conductive parts and electronic components of the module.
Doing so can cause malfunction or failure of the module.

10
[Wiring Precautions]
CAUTION
●Tighten the terminal block screws within the specified torque range.
Undertightening can cause short circuit, fire, or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
●Prevent foreign matter such as dust or wire chips from entering the module.
Such foreign matter can cause a fire, failure, or malfunction.
●A protective film is attached to the top of the module to prevent foreign matter, such as wire chips,
from entering the module during wiring.
Do not remove the film during wiring.
Remove it for heat dissipation before system operation.
●Incorrect wiring may damage modules and external devices.
Adjust a cable length and a module position to prevent disconnection of a connector type terminal
block or a cable.
●Do not solder stranded wires of a cable when connecting them to the terminal block. Doing so may
cause poor contact.
●The power supply voltage of remote slave modules may be insufficient due to a voltage drop in the
power supply line. Connect an external power supply so that the voltage of remote slave modules is
ensured.
●Do not apply the 24VDC power before wiring the entire AnyWire DB A20 system. If the power is
applied before wiring, normal data transmission is not guaranteed.
●Use 24VDC stabilized power supplies for devices in the AnyWire DB A20 system.
●Do not install the control lines or communication cables together with the main circuit lines or power
cables.
Failure to do so may result in malfunction due to noise.
●Place the cables in a duct or clamp them.
If not, dangling cable may swing or inadvertently be pulled, resulting in damage to the module or
cables or malfunction due to poor contact.
●When disconnecting the cable from the module, do not pull the cable by the cable part.
For the cable connected to the terminal block, loosen the terminal screw.
Pulling the cable connected to the module may result in malfunction or damage to the module or
cable.

11
[Startup and Maintenance Precautions]
[Startup and Maintenance Precautions]
[Disposal Precautions]
WARNING
●Do not touch any terminal while power is on. Doing so will cause electric shock or malfunction.
●Shut off the external power supply (all phases) used in the system before cleaning the module or
retightening the terminal block screws. Failure to do so may result in electric shock.
CAUTION
●Do not disassemble or modify the module.
Doing so may cause failure, malfunction, injury, or a fire.
●Shut off the external power supply (all phases) used in the system before mounting or removing a
module.
Failure to do so may cause the module to fail or malfunction.
●Tighten the terminal block screws within the specified torque range. Undertightening can cause drop
of the component or wire, short circuit, or malfunction. Overtightening can damage the screw and/or
module, resulting in drop, short circuit, or malfunction.
●After the first use of the product (module, display unit, and terminal block), the number of
connections/disconnections is limited to 50 times (in accordance with IEC 61131-2).
Exceeding the limit may cause malfunction.
●Before handling the module, touch a conducting object such as a grounded metal to discharge the
static electricity from the human body.
Failure to do so may cause the module to fail or malfunction.
CAUTION
●When disposing of this product, treat it as industrial waste.

12
CONDITIONS OF USE FOR THE PRODUCT
(1) MELSEC programmable controller ("the PRODUCT") shall be used in conditions;
i) where any problem, fault or failure occurring in the PRODUCT, if any, shall not lead to any major or serious accident;
and
ii) where the backup and fail-safe function are systematically or automatically provided outside of the PRODUCT for the
case of any problem, fault or failure occurring in the PRODUCT.
(2) The PRODUCT has been designed and manufactured for the purpose of being used in general industries.
MITSUBISHI ELECTRIC SHALL HAVE NO RESPONSIBILITY OR LIABILITY (INCLUDING, BUT NOT LIMITED TO
ANY AND ALL RESPONSIBILITY OR LIABILITY BASED ON CONTRACT, WARRANTY, TORT, PRODUCT
LIABILITY) FOR ANY INJURY OR DEATH TO PERSONS OR LOSS OR DAMAGE TO PROPERTY CAUSED BY the
PRODUCT THAT ARE OPERATED OR USED IN APPLICATION NOT INTENDED OR EXCLUDED BY
INSTRUCTIONS, PRECAUTIONS, OR WARNING CONTAINED IN MITSUBISHI ELECTRIC USER'S, INSTRUCTION
AND/OR SAFETY MANUALS, TECHNICAL BULLETINS AND GUIDELINES FOR the PRODUCT.
("Prohibited Application")
Prohibited Applications include, but not limited to, the use of the PRODUCT in;
• Nuclear Power Plants and any other power plants operated by Power companies, and/or any other cases in which the
public could be affected if any problem or fault occurs in the PRODUCT.
• Railway companies or Public service purposes, and/or any other cases in which establishment of a special quality
assurance system is required by the Purchaser or End User.
• Aircraft or Aerospace, Medical applications, Train equipment, transport equipment such as Elevator and Escalator,
Incineration and Fuel devices, Vehicles, Manned transportation, Equipment for Recreation and Amusement, and
Safety devices, handling of Nuclear or Hazardous Materials or Chemicals, Mining and Drilling, and/or other
applications where there is a significant risk of injury to the public or property.
Notwithstanding the above restrictions, Mitsubishi Electric may in its sole discretion, authorize use of the PRODUCT in
one or more of the Prohibited Applications, provided that the usage of the PRODUCT is limited only for the specific
applications agreed to by Mitsubishi Electric and provided further that no special quality assurance or fail-safe,
redundant or other safety features which exceed the general specifications of the PRODUCTs are required. For details,
please contact the Mitsubishi Electric representative in your region.
(3) Mitsubishi Electric shall have no responsibility or liability for any problems involving programmable controller trouble and
system trouble caused by DoS attacks, unauthorized access, computer viruses, and other cyberattacks.

13
COMPLIANCE WITH EMC AND LOW VOLTAGE
DIRECTIVES
(1) Method of ensuring compliance
To ensure that Mitsubishi programmable controllers maintain EMC and Low Voltage Directives when incorporated
into other machinery or equipment, certain measures may be necessary. Please refer to one of the following
manuals.
• User's manual for the CPU module or head module used
• Safety Guidelines (This manual is included with the CPU module or base unit.)
The CE mark on the side of the programmable controller indicates compliance with EMC and Low Voltage
Directives.
(2) Additional measures
To ensure that this product maintains EMC and Low Voltage Directives, please refer to Page 69, Appendix 1.

CONTENTS
14
CONTENTS
COPYRIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
PRECAUTIONS REGARDING WARRANTY AND SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CONDITIONS OF USE FOR THE PRODUCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
COMPLIANCE WITH EMC AND LOW VOLTAGE DIRECTIVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
CHAPTER 1 OVERVIEW 17
CHAPTER 2 SPECIFICATIONS 19
2.1 General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.2 Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.2.1 Performance specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
2.2.2 Power supply sequence and handling of I/O data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
2.3 Applicable System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.3.1 QJ51AW12D2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
2.3.2 LJ51AW12D2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
2.4 External Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.5 Part Names. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.6 Module Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.7 Checking Function Version and Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
CHAPTER 3 OPERATION MODE 26
3.1 QJ51AW12D2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.1.1 Transmission speed setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
3.1.2 Setting of the number of transmission points, double check mode, and waveform output
method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
3.2 LJ51AW12D2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.2.1 Setting of the number of transmission points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
3.2.2 Transmission speed setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
3.2.3 Double check mode setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
3.2.4 Waveform output method setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
CHAPTER 4 PROGRAMMING 41
4.1 I/O Signals with CPU Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
4.1.1 I/O signal list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
4.1.2 Details of the input signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
4.1.3 Details of the output signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
4.2 Buffer Memory Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.2.1 I/O area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
4.2.2 Number of error addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
4.2.3 Value of error addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
4.2.4 Number of connection addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
4.2.5 Value of connection addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
4.2.6 Latest error code storage area, latest error ID storage area . . . . . . . . . . . . . . . . . . . . . . . . . .45

15
4.3 Program Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
CHAPTER 5 MONITORING FUNCTION 48
5.1 Automatic Address Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.1.1 Executing the automatic address detection function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
5.2 Monitoring Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
CHAPTER 6 LED DISPLAY 50
6.1 QJ51AW12D2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.2 LJ51AW12D2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
CHAPTER 7 CONNECTIONS 52
7.1 Description of Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.2 Transmission Cable Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.3 Cable Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.4 Terminating Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
CHAPTER 8 TRANSMISSION TIME 56
8.1 Transmission Cycle Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.1.1 Transmission cycle time of the master module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
8.1.2 Effects of the double check system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
8.2 Transmission Delay Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8.2.1 Slave module (input) to master module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
8.2.2 Master module to slave module (output) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
CHAPTER 9 TROUBLESHOOTING 60
9.1 Visual Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
9.2 Check with Input Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
9.3 Troubleshooting of Master Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
9.3.1 QJ51AW12D2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
9.3.2 LJ51AW12D2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
9.4 Troubleshooting of Slave Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.5 List of Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
APPENDIX 69
Appendix 1 EMC and Low Voltage Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Appendix 1.1 Requirements for compliance with the EMC Directive. . . . . . . . . . . . . . . . . . . . . . . . .69
Appendix 1.2 Requirements for compliance with the Low Voltage Directive . . . . . . . . . . . . . . . . . . .71
Appendix 2 Differences between the QJ51AW12D2 and LJ51AW12D2 . . . . . . . . . . . . . . . . . . . . . . 72
Appendix 3 Functions Added and Modified with Version Upgrade. . . . . . . . . . . . . . . . . . . . . . . . . . . 73
REVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
TRADEMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

16
TERMS
Unless otherwise specified, this manual uses the following terms.
Term Description
Address Parameter set to a slave module to identify each node on the AnyWire DB A20
AnyWire DB A20
An original transmission system provided by Anywire Corporation. The full-duplex transmission mode
enables a high-speed and long-distance communication.
This system provides a high-speed and highly-reliable sensor network.
Bridge module A module that serves as a master module in a transmission system such as OpenBus
Buffer memory A memory in an intelligent function module, where data (such as setting values and monitoring values)
exchanged with a CPU module are stored
CPU module A genetic term for the MELSEC-Q series CPU module and MELSEC-L series CPU module
GX Developer The product name of the software package for the MELSEC programmable controllers
GX Works2
Head module The abbreviation for the LJ72GF15-T2 CC-Link IE Field Network head module
ID
Information assigned to a module based on its address to identify whether it is an input module or
output module
ID of the output slave module: address
ID of the input slave module or I/O combined slave module: address + 200H
Intelligent function module A MELSEC-Q/L series module other than CPU modules, power supply modules, and I/O modules,
which is mounted on a base unit
LJ51AW12D2 The abbreviation for the AnyWire DB A20 master module, LJ51AW12D2
Master module A genetic term for the QJ51AW12D2 and LJ51AW12D2
MELSEC-L series The abbreviation for the Mitsubishi Electric programmable controller MELSEC-L series
MELSEC-Q series The abbreviation for the Mitsubishi Electric programmable controller MELSEC-Q series
Power cable (24V, 0V) A cable that connects a 24VDC external power supply to a master module
Programming tool A generic term for GX Works2 and GX Developer
QJ51AW12D2 The abbreviation for the AnyWire DB A20 master module, QJ51AW12D2
Remote I/O module A module that communicates I/O data with a master module
Slave module A generic term for modules that communicate data with a master module
Terminating unit A waveform shaper
Transmission cable (D, G) A signal cable that connects between a slave module and a master module
Transmission cycle time A data sampling interval

17
CHAPTER 1 OVERVIEW
1
CHAPTER 1 OVERVIEW
This manual describes the specifications, part names, and settings of the QJ51AW12D2 AnyWire DB A20 master
module (hereafter abbreviated as the QJ51AW12D2) and LJ51AW12D2 AnyWire DB A20 master module (hereafter
abbreviated as the LJ51AW12D2).
This module, a product of the joint development project with Anywire Corporation, allows the AnyWire sensor network
system to be constructed in a MELSEC-Q series or MELSEC-L series programmable controller system.
The AnyWire DB A20 system is a high-speed and highly reliable sensor network system.
<Features of AnyWire DB A20>
The transmission distance can be selected from 50m/200m/1km/3km using the DIP switch.
Up to 512 remote input points and 512 remote output points can be controlled by one QJ51AW12D2 or LJ51AW12D2
(in the standard setting).
Disconnections can be detected even when the wiring is branched.
<Configuration of the AnyWire DB A20 system>
For the number of connectable slave modules, refer to the following.
Page 20, Section 2.2.1
AnyWire DB A20
AnyWire DB A20 master module
QJ51AW12D2
AnyWire DB A20 master module
LJ51AW12D2
AnyWire DB A20
remote I/O module (output)*
AnyWire DB A20
remote I/O module (input)*
AnyWire DB A20
terminating unit* *: Manufactured by Anywire Corporation
or

18
Memo