Azbil F4Q User manual

Thank you for purchasing your Azbil
Corporation product.
This manual contains information for
ensuring the safe and correct use of
the product.
Those designing or maintaining
equipment that uses this product
should first read and understand
this manual. This manual contains
information not only for installation,
but also for maintenance,
troubleshooting, etc. Be sure to keep it
nearby for handy reference.
(Not for use in Japan)
Digital Mass Flow Controller
Model F4Q
User’s Manual for RS-485
Communication Functions
No. CP-SP-1458E

NOTICE
Please make sure that this manual is available to the user of the product.
Unauthorized duplication of this user’s manual in part or in whole is
forbidden. The information and specifications in this manual are subject to
change without notice.
Considerable effort has been made to ensure that this manual is complete
and accurate, but if you should find an omission or error, please contact us.
In no event is Azbil Corporation liable to anyone for any indirect, special, or
consequential damages as a result of using this product.
© 2021 Azbil Corporation. All Rights Reserved.
Modbus is a trademark and the property of Schneider Electric SE, its subsidiaries and
affiliated companies.

i
Conventions Used in This Manual
The safety precautions explained below aim to prevent injury to you and others, and to prevent property damage.
WARNING Warnings are indicated when mishandling this product may
result in death or serious injury.
CAUTION Cautions are indicated when mishandling this product may
result in minor injury or property damage only.
In describing the product, this manual uses the icons and notations listed below.
Indicates that caution is required in handling.
The indicated action is prohibited.
Be sure to follow the indicated instructions.
Handling Precautions:
Information to be aware of when handling.
Note: Indicates information that may be useful.
: Indicates an item or page to which the user may refer.
(1) (2) (3): Steps in a sequence or parts of a figure, etc.

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Safety Precautions
CAUTION
Use this product within the operating conditions (for temperature, humidity, voltage,
vibration, shock, mounting orientation, atmosphere, etc.) given in the specifications in Digital
Mass Flow Controller Model F4Q User’s Manual (CP-UM-5978JECK).
Otherwise there is a danger of device failure.
Before wiring the device, turn the power off. Otherwise there is a danger of device failure.
Wire this device correctly by using the wiring method, power, and installation method
specified in this user’s manual. Otherwise there is a danger of device failure.
Do not allow wire clippings, metal shavings, water, etc., to enter the device. There is a danger
of device failure.
If there is a risk of a power surge caused by lightning, use a surge absorber (surge protector).
Otherwise there is a danger of fire or device failure.
Make sure that the wiring is correct before turning the power on. Incorrect wiring may result
in damage or malfunction.
Do not disassemble this device. There is a danger of device failure.
Do not apply excessive force to cables or connectors when connector cables or the AC adapter
is attached.
Doing so may damage the connector or circuit board.

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There are four different manuals related to model F4Q. Read them as necessary for your specific requirements.
If you do not have a manual you require, please contact us or one of our dealers.
Digital Mass Flow Controller Model F4Q User’s Manual for RS-485 Communication
Functions Document No. CP-SP-1458E
This manual.
Personnel who use this device's communications functions should read this manual. The
manual gives an overview of communications, describes wiring, transmission protocols,
communications data, and communication troubleshooting, and gives communications
specifications.
Digital Mass Flow Controller Model F4Q User’s Manual
Document No. CP-SP-1461E
Personnel who are using the F4Q for the first time or who are in charge of
hardware design and/or maintenance of a control panel containing the F4Q
should read this manual thoroughly.
This manual gives an overview of the product, describes installation, wiring,
operation, functions, maintenance, and troubleshooting, and gives hardware
specifications.
User’s Manual for Smart Loader Package Model MLP-F4Q for Digital Mass
Flow Controller Model F4Q Document No. CP-SP-1457E
The user can specify and check parameters of the F4Q on a PC using the MLP-F4Q
loader. Personnel who configure the F4Q or check the settings using the loader
should read this manual.
This manual also describes the installation of the software on a PC and its
functions and operation.
Digital Mass Flow Controller Model F4Q User’s Manual
Document No. CP-UM-5978JECK
This manual is supplied with the product.
Personnel in charge of the design or manufacture of equipment that
incorporates the F4Q and personnel in charge of installation of this device should
read this manual thoroughly.
The manual covers safety precautions, installation, wiring, and main
specifications.
The Role of This Manual

iv
· Modbus is a trademark and the property of Schneider Electric SE, its subsidiaries and affiliated companies.
Copyright, licenses, and registered trademarks

v
Conventions Used in This Manual
Safety Precautions
The Role of This Manual
Copyright, licenses, and registered trademarks
Chapter 1. Overview 1-1
1 - 1 Overview 1-1
 Features 1-1
 System configuration 1-1
Chapter 2. Wiring 2-1
2 - 1 RS-485 Connection 2-1
2 - 2 Terminal Layout of This Device 2-2
Chapter 3. Settings 3-1
3 - 1 Communication Function Settings 3-1
3 - 2 Setup Method 3-2
Chapter 4. CPL Communication 4-1
4 - 1 Communication Procedure 4-1
4 - 2 Message Structure 4-2
 Overview of a CPL Frame 4-2
 Data link layer 4-3
 Application layer 4-6
4 - 3 Description of Commands 4-7
 RS command (decimal format consecutive data read) 4-7
 RD command (hexadecimal format consecutive data read) 4-9
 WS command (decimal format consecutive data write) 4-12
 WD command (hexadecimal format consecutive data write) 4-14
4 - 4 Termination Code 4-16
4 - 5 Timing Specifications 4-17
 Timing for response messages 4-17
 RS-485 driver control timing 4-17
4 - 6 Character Code Table 4-18
Contents

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Chapter 5. Modbus Communication (RTU Mode) 5-1
5 - 1 Communication Procedure 5-1
5 - 2 Message Structure 5-2
 Overview of Modbus-RTU Frame 5-2
 Silent interval 5-2
 Function code 5-2
 Check code 5-3
 Error termination code 5-4
 Conditions under which no response message is returned (no-response
conditions) 5-5
5 - 3 Description of Commands 5-6
 Function 03 (multiple data read command) 5-6
 Function 06 (one data write command) 5-8
 Function 16 (multiple data write command) 5-9
5 - 4 Timing Specifications 5-11
Chapter 6. Communication Data 6-1
6 - 1 Basic Information for Handling Communication Data 6-1
 Communication data types and formats 6-1
 Communication data storage memory 6-1
6 - 2 Communication Data Table 6-3
 Meaning of the symbols in columns R and W 6-3
 Data related to the device 6-3
 Data related to operating status 6-4
 Data related to the instantaneous flow rate setpoint 6-7
 Data related to total flow volume 6-8
 Data related to function settings 6-9
 Data related to parameter settings 6-16
Chapter 7. Device Operation by Communication Commands 7-1
Chapter 8. Troubleshooting 8-1
 Communication failure 8-1
Chapter 9. Specifications 9-1
 RS-485 specifications 9-1

1-1
Chapter 1. Overview
1 - 1 Overview
Model F4Q (hereafter also “this device” or “the slave station”) can exchange data with host devices (master stations)
such as a PC or a PLC via RS-485 communication.
 Features
• The master station transmits read and write commands to slave stations.
• Through the reading and writing of data, the user can control this device, collect
process data, and configure device settings.
• Using RS-485 communication, up to 31 slave stations (devices like this device
that are compatible with RS-485) can be connected to a master station. Station
addresses are used to communicate with specific slave stations.
• The communication program is to be developed by the user.
• The data to be read/written can be freely selected by the data address.
• CPL (Azbil Corporation’s protocol) and Modbus RTU communication protocols
are supported. The user can select either one of the protocols.
 System configuration
Slave station
(models F4Q, F4H, etc.)
Up to 31 units
*Azbil’s model NX-SVG Smart Device Gateway, etc.
RS-485 (3-wire system)
Master station (PLC, etc.)
Converter*
LAN cable
PWR
NX-SVGN
USB
DA(+)
SG
DB(−) RS-485 CH1
RS-485
BATTERY
LINK/ACT
LAN1
FUNCTION ERROR
ID
F1 F2
RUN MOD COM NST FAIL
Handling Precautions
• Do not write data by RS-485 and by the loader at the same time.