Mitsubishi Electric MELSEC iQ-F Series User manual

MELSEC iQ-F FX5 User's Manual (BACnet)

1
SAFETY PRECAUTIONS
(Read these precautions before use.)
Before using this product, please read this manual and the relevant manuals introduced in this manual carefully and pay full
attention to safety in order to handle the product correctly.
This manual classifies the safety precautions into two categories: [ WARNING] and [ CAUTION].
Depending on the circumstances, procedures indicated by [ CAUTION] may also cause severe injury.
It is important to follow all precautions for personal safety.
Store this manual in a safe place so that it can be read whenever necessary. Always forward it to the end user.
[Design Precautions]
WARNING
●Make sure to set up the following safety circuits outside the programmable controller to ensure safe
system operation even during external power supply problems or programmable controller failure.
Otherwise, malfunctions may cause serious accidents.
- Most importantly, set up the following: an emergency stop circuit, a protection circuit, an interlock
circuit for opposite movements (such as normal vs. reverse rotation), and an interlock circuit (to
prevent damage to the equipment at the upper and lower positioning limits).
- Note that when the CPU module detects an error, such as a watchdog timer error, during self-
diagnosis, all outputs are turned off. Also, when an error that cannot be detected by the CPU
module occurs in an input/output control block, output control may be disabled. External circuits
and mechanisms should be designed to ensure safe machinery operation in such a case.
- Note that when an error occurs in a relay or transistor of an output circuit, the output might stay on
or off. For output signals that may lead to serious accidents, external circuits and mechanisms
should be designed to ensure safe machinery operation in such a case.
●In an output circuit, when a load current exceeding the rated current or an overcurrent caused by a
load short-circuit flows for a long time, it may cause smoke and fire. To prevent this, configure an
external safety circuit, such as a fuse.
●For the operating status of each station after a communication failure, refer to manuals relevant to the
network. Incorrect output or malfunction due to a communication failure may result in an accident.
●Construct an interlock circuit in the program so that the whole system always operates on the safe
side before executing the control (for data change) of the programmable controller in operation.
Read the manual thoroughly and ensure complete safety before executing other controls (for program
change, parameter change, forcible output and operation status change) of the programmable
controller in operation.
Otherwise, the machine may be damaged and accidents may occur due to erroneous operations.
●Especially, in the case of a control from an external device to a remote programmable controller,
immediate action cannot be taken for a problem on the programmable controller due to a
communication failure. Determine the handling method as a system when communication failure
occurs along with configuration of interlock circuit on a program, by considering the external
equipment and CPU module.
WARNING Indicates that incorrect handling may cause hazardous conditions, resulting in
death or severe injury.
CAUTION Indicates that incorrect handling may cause hazardous conditions, resulting in
minor or moderate injury or property damage.

2
[Design Precautions]
[Design Precautions]
[Security Precautions]
[Installation Precautions]
WARNING
●Do not write any data to the "system area" and "write-protect area" of the buffer memory in the
intelligent function module. Executing data writing to the "system area" or "write-protect area" may
cause malfunction of the programmable controller alarm. For the "system area" or "write-protect
area", refer to Page 75 Buffer Memory.
●If a communication cable is disconnected, the network may be unstable, resulting in a communication
failure of multiple stations. Construct an interlock circuit in the program so that the system always
operates on the safe side even if communications fail. Incorrect output or malfunction may result in an
accident.
CAUTION
●Do not bundle the control line and communication cables together with or lay them close to the main
circuit or power line. Keep a distance of 100mm or more between them. Failure to do so may result in
malfunction due to noise.
●When an inductive load such as lamp, heater, or solenoid valve is controlled, a large current
(approximately ten times greater than normal) may flow when the output is turned from off to on. Take
proper measures so that the flowing current does not exceed the value corresponding to the
maximum load specification of the resistive load.
●Do not power off the CPU module or reset the CPU module while the settings are being written. Doing
so will make the data in the flash ROM undefined. The values need to be set in the buffer memory and
written to the flash ROM again. Doing so also may cause malfunction or failure of the module.
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 unreliable networks and devices via the network, take appropriate measures such
as firewalls, virtual private networks (VPNs), and antivirus solutions.
WARNING
●Make sure to cut off all phases of the power supply externally before attempting installation or wiring
work. Failure to do so may cause electric shock or damage to the product.
●Use the product within the generic environment specifications described in the User's Manual
(Hardware) of the CPU module used.
Never use the product in areas with excessive dust, oily smoke, conductive dusts, corrosive gas (salt
air, Cl2, H2S, SO2or NO2), flammable gas, vibration or impacts, or expose it to high temperature,
condensation, or rain and wind.
If the product is used in such conditions, electric shock, fire, malfunctions, deterioration or damage
may occur.

3
[Installation Precautions]
[Wiring Precautions]
CAUTION
●Do not touch the conductive parts of the product directly. Doing so may cause device failures or
malfunctions.
●When drilling screw holes or wiring, make sure that cutting and wiring debris do not enter the
ventilation slits of the programmable controller. Failure to do so may cause fire, equipment failures or
malfunctions.
●For the product supplied together with a dust proof sheet, the sheet should be affixed to the ventilation
slits before the installation and wiring work to prevent foreign objects such as cutting and wiring
debris.
However, when the installation work is completed, make sure to remove the sheet to provide
adequate ventilation. Failure to do so may cause fire, equipment failures or malfunctions.
●Install the product on a flat surface. If the mounting surface is rough, undue force will be applied to the
PC board, thereby causing nonconformities.
●Install the product securely using a DIN rail or mounting screws.
●Work carefully when using a screwdriver such as installation of the product. Failure to do so may
cause damage to the product or accidents.
●Connect the extension cables, peripheral device cables, input/output cables and battery connecting
cable securely to their designated connectors. Loose connections may cause malfunctions.
●Turn off the power to the programmable controller before attaching or detaching the following devices.
Failure to do so may cause device failures or malfunctions.
- Peripheral devices, expansion board, expansion adapter, and connector conversion adapter
- Extension modules, bus conversion module, and connector conversion module
- Battery
WARNING
●Make sure to cut off all phases of the power supply externally before attempting installation or wiring
work. Failure to do so may cause electric shock or damage to the product.
●Make sure to attach the terminal cover, provided as an accessory, before turning on the power or
initiating operation after installation or wiring work. Failure to do so may cause electric shock.
●The temperature rating of the cable should be 80or more.
●Make sure to wire the screw terminal block in accordance with the following precautions. Failure to do
so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions, or
damage to the product.
- The disposal size of the cable end should follow the dimensions described in the User's Manual
(Hardware) of the CPU module used.
- Twist the ends of standard wires and make sure that there are no loose wires.
- Do not solder-plate the electric wire ends.
- Do not connect more than the specified number of wires or electric wires of unspecified size.
- Affix the electric wires so that neither the terminal block nor the connected parts are directly
stressed.

4
[Wiring Precautions]
[Startup and Maintenance Precautions]
CAUTION
●Perform class D grounding (grounding resistance: 100or less) of the grounding terminal on the CPU
module and extension modules with a wire 2or thicker.
Do not use common grounding with heavy electrical systems (refer to the User's Manual (Hardware)
for the CPU module used).
●Individually ground the FG terminal of the programmable controller with a ground resistance of 100
or less. Failure to do so may result in electric shock or malfunction.
●Install module so that excessive force will not be applied to terminal blocks, or communication cables.
Failure to do so may result in wire damage/breakage or programmable controller failure.
●Make sure to observe the following precautions in order to prevent any damage to the machinery or
accidents due to malfunction of the programmable controller caused by abnormal data written to the
programmable controller due to the effects of noise:
- Do not bundle the power line, control line and communication cables together with or lay them close
to the main circuit, high-voltage line, load line or power line. As a guideline, lay the power line,
control line and connection cables at least 100 mm away from the main circuit, high-voltage line,
load line or power line.
- Ground the shield of the shielded wire or shield cable at one point on the programmable controller.
However, do not use common grounding with heavy electrical systems.
●For Ethernet cables to be used in the system, select the ones that meet the specifications described in
the user's manual for the module used. If not, normal data transmission is not guaranteed.
WARNING
●Do not touch any terminal while the programmable controller's power is on. Doing so may cause
electric shock or malfunctions.
●Before cleaning or retightening terminals, cut off all phases of the power supply externally. Failure to
do so in the power ON status may cause electric shock.
●Before modifying the program in operation, forcible output, running or stopping the programmable
controller, read through this manual carefully, and ensure complete safety. An operation error may
damage the machinery or cause accidents.
●Do not change the program in the programmable controller from two or more peripheral equipment
devices at the same time. (i. e. from an engineering tool and a GOT) Doing so may cause destruction
or malfunction of the programmable controller program.

5
[Startup and Maintenance Precautions]
[Operating Precautions]
[Disposal Precautions]
CAUTION
●When connecting an external device with a CPU module or intelligent function module to modify data
of a running programmable controller, configure an interlock circuit in the program to ensure that the
entire system will always operate safely. For other forms of control (such as program modification,
parameter change, forced output, or operating status change) of a running programmable controller,
read the relevant manuals carefully and ensure that the operation is safe before proceeding. Improper
operation may damage machines or cause accidents.
●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 program, and determine corrective actions
to be taken between the external device and CPU module in case of a communication failure.
●Do not disassemble or modify the programmable controller. Doing so may cause fire, equipment
failures, or malfunctions.
For repair, consult your local Mitsubishi Electric representative.
●Turn off the power to the programmable controller before attaching or detaching the following devices.
Failure to do so may cause device failures or malfunctions.
- Peripheral devices, expansion board, expansion adapter, and connector conversion adapter
- Extension modules, bus conversion module, and connector conversion module
- Battery
●Read relevant manuals carefully and ensure the safety before performing online operations (operation
status change) with peripheral devices connected to the CPU modules of other stations. Improper
operation may damage machines or cause accidents.
CAUTION
●Construct an interlock circuit in the program so that the whole system always operates on the safe
side before executing the control (for data change) of the programmable controller in operation. Read
the manual thoroughly and ensure complete safety before executing other controls (for program
change, parameter change, forcible output and operation status change) of the programmable
controller in operation. Otherwise, the machine may be damaged and accidents may occur due to
erroneous operations.
●Do not power off the CPU module or reset the CPU module while the setting values in the buffer
memory are being written to the flash ROM in the intelligent function module. Doing so will make the
data in the flash ROM undefined. The values need to be set in the buffer memory and written to the
flash ROM again. Doing so can cause malfunction or failure of the module.
●Note that the whole system may not be reset by the RUN/STOP/RESET switch when the CPU module
or intelligent function module detects an error, such as a watchdog timer error, during self-diagnosis.
In this case, turn the power off and on again.
CAUTION
●Please contact a certified electronic waste disposal company for the environmentally safe recycling
and disposal of your device.

6
[Transportation Precautions]
CAUTION
●The programmable controller is a precision instrument. During transportation, avoid impacts larger
than those specified in the general specifications of the User's Manual (Hardware) of the CPU module
used by using dedicated packaging boxes and shock-absorbing palettes. Failure to do so may cause
failures in the programmable controller. After transportation, verify operation of the programmable
controller and check for damage of the mounting part, etc.

7
INTRODUCTION
Thank you for purchasing the Mitsubishi Electric MELSEC iQ-F series programmable controllers.
This manual describes the BACnet functions of the FX5-ENET Ethernet module and the FX5-ENET/IP Ethernet module.
It should be read and understood before attempting to install or use the module.
Always forward it to the end user.
Regarding use of this product
• This product has been manufactured as a general-purpose part for general industries, and has not been designed or
manufactured to be incorporated in a device or system used in purposes related to human life.
• Before using the product for special purposes such as nuclear power, electric power, aerospace, medicine or passenger
movement vehicles, consult Mitsubishi Electric.
• This product has been manufactured under strict quality control. However when installing the product where major
accidents or losses could occur if the product fails, install appropriate backup or failsafe functions in the system.
Note
• If in doubt at any stage during the installation of the product, always consult a professional electrical engineer who is
qualified and trained in the local and national standards. If in doubt about the operation or use, please consult the nearest
Mitsubishi Electric representative.
• Since the examples indicated by this manual, technical bulletin, catalog, etc. are used as a reference, please use it after
confirming the function and safety of the equipment and system. Mitsubishi Electric will accept no responsibility for actual
use of the product based on these illustrative examples.
• This manual content, specification etc. may be changed, without a notice, for improvement.
• The information in this manual has been carefully checked and is believed to be accurate; however, if you notice a doubtful
point, an error, etc., please consult your local Mitsubishi Electric representative. When doing so, please provide the manual
number given at the end of this manual.

8
CONTENTS
SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
RELEVANT MANUALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
GENERIC TERMS AND ABBREVIATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
CHAPTER 1 OVERVIEW 12
CHAPTER 2 SPECIFICATIONS 14
2.1 Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2 BACnet Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
BACnet standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
BIBB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
CHAPTER 3 PROCEDURES BEFORE OPERATION 17
CHAPTER 4 FUNCTIONS 19
4.1 Function List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2 BACnet Object Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Object list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
List of data types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Common item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Accumulator (AC) object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
AnalogInput (AI) object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
AnalogOutput (AO) object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
AnalogValue (AV) object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
BinaryInput (BI) object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
BinaryOutput (BO) object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
BinaryValue (BV) object. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Multi-State Input (MI) object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Multi-State Output (MO) object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
NetworkPort (NP) object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Device (DV) object. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
4.3 Joining/Leaving Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.4 Time Synchronization Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
CHAPTER 5 SYSTEM CONFIGURATION 49
CHAPTER 6 PARAMETER SETTINGS 51
6.1 Setting Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.2 Required Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.3 Basic Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
BACnet function setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
External device configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
6.4 Application Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

9
CONTENTS
CHAPTER 7 PROGRAMMING 63
7.1 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
7.2 Parameter Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
7.3 Program Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Program that stores information collected at a BACnet workstation or BACnet controllers . . . . . . . . . . . . . . . . 69
Program that outputs information stored at a BACnet workstation or BACnet controllers . . . . . . . . . . . . . . . . . 71
CHAPTER 8 TROUBLESHOOTING 73
8.1 Troubleshooting by Symptom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
8.2 List of Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
APPENDICES 75
Appendix 1 Buffer Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
List of buffer memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Details of buffer memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Appendix 2 Details of BACnet Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Properties of Accumulator object. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Properties of AnalogInput object, AnalogOutput object, and AnalogValue object . . . . . . . . . . . . . . . . . . . . . . . . 97
Properties of BinaryInput object, BinaryOutput object, and BinaryValue object . . . . . . . . . . . . . . . . . . . . . . . . . 98
Properties of Multi-State Input object and Multi-State Output object. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Properties of NetworkPort object. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Properties of Device object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
INDEX 100
REVISIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
TRADEMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

10
RELEVANT MANUALS
TERMS
Unless otherwise specified, this manual uses the following terms.
Manual name (manual number) Description
MELSEC iQ-F FX5 User's Manual (Startup)
<JY997D58201>
Performance specifications, procedures before operation, and troubleshooting
of the FX5 CPU module
MELSEC iQ-F FX5UJ User's Manual (Hardware)
<SH-082206ENG>
Details of hardware of the FX5UJ CPU module, including I/O specifications,
wiring, installation, and maintenance
MELSEC iQ-F FX5U User's Manual (Hardware)
<JY997D55301>
Details of hardware of the FX5U CPU module, including I/O specifications,
wiring, installation, and maintenance
MELSEC iQ-F FX5UC User's Manual (Hardware)
<JY997D61401>
Details of hardware of the FX5UC CPU module, including I/O specifications,
wiring, installation, and maintenance
MELSEC iQ-F FX5 User's Manual (Application)
<JY997D55401>
Basic knowledge about programming, functions of the CPU module, devices/
labels, and parameter settings
MELSEC iQ-F FX5 Programming Manual (Program Design)
<JY997D55701>
Program specifications, such as ladder diagrams, ST, and FBD/LD programs,
and labels
MELSEC iQ-F FX5 Programming Manual (Instructions, Standard Functions/
Function Blocks)
<JY997D55801>
Specifications of the instructions and functions that can be used in programs
MELSEC iQ-F FX5 User's Manual (Ethernet Communication)
<JY997D56201>
The Ethernet communication function available with the CPU module and
Ethernet module
MELSEC iQ-F FX5-ENET User's Manual
<SH-082026ENG>
Description of the FX5-ENET
MELSEC iQ-F FX5-ENET/IP User's Manual
<SH-082027ENG>
Description of the FX5-ENET/IP
MELSEC iQ-F FX User's Manual (BACnet)
<SH-082218ENG> (This manual)
Description of the BACnet functions of the Ethernet module
GX Works3 Operating Manual
<SH-081215ENG>
Explanation of system configuration, parameter settings, and online operations
of GX Works3
Term Description
Available profile Devices that implement specific function specified by the BACnet standard
The available devices are as follows.
B-OWS, B-BC, B-AAC, B-ASC, B-SA, and B-SS
B-AAC A control device for more limited resources than a B-BC.
The B-BC supports a certain degree of programmability for specific applications.
B-ASC A control device for more limited resources than a B-AAC
B-BC A field programmable device that can perform the building automation function and control function
B-OWS An operator interface in a BACnet system
B-SA A simple control device
B-SS A simple sensor device
BACnet A communication standard for building networks established by American Society of Heating, Refrigerating
and Air-Conditioning Engineers (ASHRAE) in 1995. It also represents a system built on BACnet.
BACnet controller A controller that provides input and output for the BACnet system as the lower level of the BACnet system
BACnet device A connection device for the BACnet system
BACnet workstation A central monitoring device to manage and monitor the status of the BACnet system as the upper level of
the BACnet system
Broadcast To send data to an unspecified number of devices in a network
Buffer memory Memory in an intelligent module and SLMP-compatible device to store data such as setting values and
monitor values
Device restart A function that specifies devices (communication target) to which whether the own station has joined or left
BACnet is notified
Engineering tool The product name of the software package for the MELSEC programmable controllers
Index number A number that identifies the element of the property that is an array
Instance number A number assigned to each BACnet device and object type. The BACnet system uses this number to
provide various BACnet services to each other.

11
GENERIC TERMS AND ABBREVIATIONS
Unless otherwise specified, this manual uses the following generic terms and abbreviations.
Join To notify the BACnet workstation and other BACnet controllers of its existence as a BACnet controller and
to enter the BACnet system.
The joining processing methods and procedures vary depending on the BACnet standard.
Leave To leave from the BACnet system
Local Broadcast To send data to all devices on the same network as a device that sent the data
Object Information about the input, output, and internal state of the BACnet device.
It also represents a BACnet object.
Object type number A number assigned to ObjectType
ObjectIdentifier An object identifier consisting of the object type and the instance number of the object
Priority Indicates priority.
Properties Detailed information and attributes of each object.
An object consists of properties, and depending on the status of the properties, it may affect other
properties and change control.
Remote Broadcast To specify a different network from a device that sent the data and send data to all devices or nodes on the
network
Service A function that BACnet devices provide to each other with external BACnet devices.
It also represents the BACnet service.
Generic term/abbreviation Description
Ethernet module A generic term for the following modules when the Ethernet communication function is used:
•FX5-ENET
•FX5-ENET/IP
FX5 CPU module A generic term for the FX5UJ CPU module, FX5U CPU module, and FX5UC CPU module
Term Description

12 1 OVERVIEW
1OVERVIEW
• BACnet is a building network.
• The FX5-ENET Ethernet module and FX5-ENET/IP Ethernet module (hereinafter referred to as Ethernet module) can be
connected to BACnet/IP using the BACnet functions. Ethernet modules operate as a BACnet device in a BACnet system.
• The Ethernet modules support B-ASC profile.
The BACnet functions can be used with other general-purpose Ethernet protocols.

1 OVERVIEW
13
1
MEMO

14 2 SPECIFICATIONS
2.1 Performance Specifications
2SPECIFICATIONS
This chapter describes the specifications of BACnet for the Ethernet module.
For other specifications, refer to the following.
MELSEC iQ-F FX5-ENET User's Manual
MELSEC iQ-F FX5-ENET/IP User's Manual
2.1 Performance Specifications
The following table lists the performance specifications of BACnet for the Ethernet module.
*1 For maximum segment length (length between hubs), consult the manufacturer of the hub used.
*2 Number of simultaneously accepted commands: 8 commands maximum (excluding broadcasts from other devices)
*3 The ports must comply with the IEEE802.3 100BASE-TX or IEEE802.3 10BASE-T standard.
*4 Straight/crossover cables can be used.
Item Description
Transmission specifications Data transmission speed 100Mbps/10Mbps
Communication mode Full-duplex/half-duplex
Transmission method Base band
Interface RJ45 connector
Maximum segment length 100m (length between switching hub and node)*1
Number of registrable input/output objects 92 instances
Protocol type BACnet/IP
Number of connections 1*2
Hub Hubs with ports*3 that comply with the IEEE802.3 100BASE-TX or IEEE802.3 10BASE-T
standard can be used.
Connection cable*4 100BASE-TX Ethernet cable category 5 or higher (STP cable)
10BASE-T Ethernet cable category 3 or higher (STP/UTP cable)
CPU module • FX5UJ CPU module (Ver.1.010 or later)
• FX5U CPU module (Ver.1.240 or later)
• FX5UC CPU module (Ver.1.240 or later)
Profile B-ASC
Engineering tool (BACnet function supported version) GX Works3 (Ver.1.075D or later)

2 SPECIFICATIONS
2.2 BACnet Specifications 15
2
2.2 BACnet Specifications
BACnet standards
BACnet complies with the following BACnet standards.
• ANSI/ASHRAE Standard 135-2016
• ANSI/ASHRAE Standard 135-2012
• ANSI/ASHRAE Standard 135-2010
• ANSI/ASHRAE Standard 135-2004
• IEIEJ-G-0006:2006 Addendum-a
Object
The following table lists the objects supported by the Ethernet module.
: Supported, : Not supported
Object name Object type
number
Number of
instances
ANSI/ASHRAE Standard IEIEJ-G-
0006:2006
Addendum-a
135-2016 135-2012 135-2010 135-2004
Accumulator 23 4 
AnalogInput 0 8 
AnalogOutput 1 8 
AnalogValue 2 8 
BinaryInput 3 16 
BinaryOutput 4 16 
BinaryValue 5 16 
Multi-state Input 13 8 
Multi-state
Output
14 8 
NetworkPort 56 1 
Device 8 1 

16 2 SPECIFICATIONS
2.2 BACnet Specifications
BIBB
The following table lists the BACnet Interoperability Building Block (BIBB) supported by the Ethernet module.
BIBB is a set of BACnet services that are executed between the client and server of a BACnet device.
For details on BIBB, refer to the BACnet standards.
: Supported, : Not supported
BIBB category Description BACnet Service Description Initiate Execute
Data Sharing ReadProperty-B
(DS-RP-B)
ReadProperty Reads one property value in
one object.

ReadPropertyMultiple-B
(DS-RPM-B)
ReadPropertyMultiple Reads multiple property
values in multiple objects.

WriteProperty-B
(DS-WP-B)
WriteProperty Changes one property value
in one object.

WritePropertyMultiple-B
(DS-WPM-B)
WritePropertyMultiple Changes multiple property
values in multiple objects.

Device Management Dynamic Device Binding-B
(DM-DDB-B)
Who-Is Used for determining the
object IDs and network
addresses of other BACnet
devices.

I-Am Sends the own object ID. 
Dynamic Object Binding-B
(DM-DOB-B)
Who-Has Used for identifying the
object with the specified
object ID or object name.

I-Have Sends the own object ID and
object name.

DeviceCommunicationControl-B
(DM-DCC-B)
DeviceCommunicationControl Prohibits sending requests
and responses for a specified
period of time.

TimeSynchronization-B
(DM-TS-B)
TimeSynchronization Synchronizes time. 
Restart-B
(DM-R-B)
UnconfirmedCOVNotification Notifies changes in the
setting values.

Network Management Router Configuration-A
(NM-RC-A)
Who-Is-Router-To-Network Used for identifying the router
to the specified destination
network.

I-Am-Router-To-Network Notifies that this is a router. 

3 PROCEDURES BEFORE OPERATION
17
3
3PROCEDURES BEFORE OPERATION
This chapter describes the procedures before operation.
1. Checking the specifications of the Ethernet module
Check the specifications of the Ethernet module. (Page 14 SPECIFICATIONS)
MELSEC iQ-F FX5-ENET User's Manual
MELSEC iQ-F FX5-ENET/IP User's Manual
2. Mounting the Ethernet module
Mount the Ethernet module to the FX5 CPU module. For details, refer to the following.
MELSEC iQ-F FX5UJ User's Manual (Hardware)
MELSEC iQ-F FX5U User's Manual (Hardware)
MELSEC iQ-F FX5UC User's Manual (Hardware)
3. Configuring a network
Configure the system and set the parameters which are required for startup.
• Wiring (MELSEC iQ-F FX5-ENET User's Manual, MELSEC iQ-F FX5-ENET/IP User's Manual)
• Parameter setting (Page 51 PARAMETER SETTINGS)
4. Network diagnostics
Check the network status with the Ethernet diagnostics.
For details, refer to the following.
MELSEC iQ-F FX5-ENET User's Manual
MELSEC iQ-F FX5-ENET/IP User's Manual
5. Programming
Create a program. (Page 63 PROGRAMMING)
6. Checking the communication status
Check the communication status of the Ethernet module. (MELSEC iQ-F FX5-ENET User's Manual, MELSEC iQ-F
FX5-ENET/IP User's Manual)

18 3 PROCEDURES BEFORE OPERATION
MEMO