Azbil NX-D15 User manual

Thank you for purchasing this 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.
It also provides necessary information
for installation, maintenance, and
troubleshooting. Be sure to keep this
manual nearby for handy reference.
Network Instrumentation Modules
Controller Module
Model NX-D15/25/35
User’s Manual
for Functions
No. CP-SP-1308E

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.
© 2009–2023 Azbil Corporation. All Rights Reserved.
Modbus™ is a trademark and the property of Schneider Electric SE, its subsidiaries
and affiliated companies.

i
■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 conventions 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.
[Project], [OK] Square brackets indicate a window name, menu, or button shown on the PC screen.
[Shift] key Indicates a key on the PC.
>> Indicates the result of an operation, or the status after the operation.
“ROM version2.00 [2_0_1]” tells the ROM version*1and the module version.*2
Module minor version
Module major version
Module-compatible version
ROM minor version
ROM major version
*1. ROM version numbers are used for ROM version change management.
*2. Module versions are used to manage parameter compatibility.
■Abbreviations
In this manual, some product names are abbreviated as shown below.
Temperature Controller: TC Communication adapter: CA
Digital input/pulse input module: DX Terminal adapter: TA
Digital output module: DY Communication box: CB
Supervisor module: SV SLP-NX Smart Loader Package: the loader
Conventions Used in This Manual

ii
The safety precautions explained below aim to ensure safe and correct use of this product in order to prevent injury
to you and others, and to prevent property damage. Be sure to observe these safety precautions. Please make sure
you understand the safety guidelines before reading the rest of this manual.
Use of this product in a manner not specified by the manufacturer will impair its built-in safety features.
WARNING
Before removing, mounting, or wiring this device, be sure to turn off the power to this device and all
connected devices. Otherwise, there is a danger of electric shock.
Be sure to check that the device has been correctly wired before turning on the power.
Incorrect wiring of this device may cause device failure and also lead to a dangerous accident.
CAUTION
To lock or unlock the DIN rail locking tab, use a tool such as a screwdriver.
Do not disassemble the NX-D15/25/35.
There is a danger of device failure.
Do not block the ventilation holes.
There is a danger of fire or device failure.
Do not allow wire clippings, metal shavings, water, etc., to enter the case of this device.
There is a danger of fire or device failure.
Do not touch live parts such as the power terminals.
There is a danger of electric shock.
Before wiring this device, turn off the power except when connecting network cables.
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 fire, electric shock, or device failure.
Make sure that there are no loose connections. Failure to do so may cause overheating or equipment
failure.
The total power consumption of all connected modules should be no more than 70 W.
Otherwise, there is a danger of fire or device failure.
Do not supply power to a group of connected modules from multiple power sources.
There is a danger of fire or device failure.
Do not use unused terminals as relay terminals.
There is a danger of fire, electric shock, or device failure.
Do not short out the output section.
There is a danger of device failure.
Firmly tighten the terminal screws to the torque listed in the specifications.
Insufficient tightening may cause fire.
Safety Precautions

iii
CAUTION
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.
Use this device within the operating ranges given in the specifications (for temperature, humidity,
voltage, vibration, shock, mounting direction, atmosphere, etc.). Otherwise, there is a danger of fire
or device failure.
The NX-D15/25/35 does not operate for about 10 seconds after the power has been turned ON,
depending on the settings.
Be careful if the output from the module is used as an interlock signal.
When disposing of this product, please do so appropriately, in compliance with local ordinances for
industrial waste.
Before wiring the NX-D15/25/35, be sure to disconnect the power. Otherwise, there is a danger of
device failure.
Do not use screw terminal block models together with screwless terminals, or vice versa, since
correct measurement will not be possible.
This device should be handled by a specialist with expertise in electrical safety.
If this device is used in a manner not specified by the manufacturer, the protective functions of the
device may be impaired.
To remove dirt from this device, wipe it with a soft dry cloth.
When removing dirt from this device, never use an organic solvent such as thinner or benzene, or a
detergent.
Make sure that devices or equipment connected to this device have reinforced insulation suitable
for the maximum voltages of this device’s power supply and input/output components.

iv
There are 13 different manuals related to Network Instrumentation Modules. 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.
Alternatively, you can download the necessary manuals from https://www.azbil.com.
Network Instrumentation Modules Controller Module Model NX-D15/25/35
User’s Manual for Functions Document No. CP-SP-1308E
This manual.
Personnel who are using the NX-D15/25/35 for the first time or who are in charge of
hardware design and/or maintenance of a control panel containing the NX-D15/25/35
should read this manual thoroughly. This manual describes the hardware, surveys
the NX-D15/25/35 and other products used with it, explains installation, wiring, and
troubleshooting, and gives hardware specifications.
Network Instrumentation Modules Controller Module Model NX-D15/25/35
User’s Manual for Installation Document No. CP-UM-5561JE
This manual is supplied with the NX-D15/25/35.
Personnel in charge of design and/or manufacture of a system using the NX-
D15/25/35 should thoroughly read this manual. It describes safety precautions,
installation, wiring, and primary specifications.
Network Instrumentation Modules Communication Box Model NX-CB1
User’s Manual for Installation Document No. CP-UM-5558JE
This manual is supplied with the NX-CB1.
Personnel in charge of design and/or manufacture of a system using the NX-CB1
should read this manual thoroughly. It describes safety precautions, installation,
wiring, and primary specifications.
Network Instrumentation Modules Communication Box Model NX-CB2
User’s Manual for Installation Document No. CP-UM-5715JE
This manual is supplied with the NX-CB2.
Personnel in charge of design and/or manufacture of a system using the NX-CB2
should read this manual thoroughly. It describes safety precautions, installation,
wiring, and primary specifications.
The Role of This Manual

v
Network Instrumentation Modules Digital Input/Pulse Input Module Model
NX-DX1/2 User’s Manual for Installation
Document No. CP-UM-5560JE
This manual is supplied with the NX-DX1/DX2.
Personnel in charge of design and/or manufacture of a system using the NX-
DX1/DX2 should read this manual thoroughly. It describes safety precautions,
installation, wiring, and primary specifications.
Network Instrumentation Modules Supervisor Modules Model NX-S11/12/21
User’s Manual for Installation Document No. CP-UM-5557JE
This manual is supplied with the NX-S11/12/21.
Personnel in charge of design and/or manufacture of a system using the NX-
S11/12/21 should thoroughly read this manual. It describes safety precautions,
installation, wiring, and primary specifications.
Network Instrumentation Modules Digital Output Module Model NX-DY1/2
User’s Manual for Installation Document No. CP-UM-5564JE
This manual is supplied with the NX-DY1/2.
Personnel in charge of design and/or manufacture of a system using the NX-
DY1/2 must thoroughly read this manual. It describes safety precautions,
installation, wiring, and primary specifications.
Network Instrumentation Modules Digital Input/Pulse Input Module Model
NX-DX1/2 User’s Manual for Functions Document No. CP-SP-1323E
Personnel who are using the NX-DX1/DX2 for the first time or who are in charge
of hardware design and/or maintenance of a control panel containing the NX-
DX1/DX2 should read this manual thoroughly.
This manual describes the hardware, surveys the NX-DX1/DX2 and other
products used with it, explains installation, wiring, and troubleshooting, and
gives hardware specifications.
Network Instrumentation Modules Supervisor Module Model NX-S11/12/21
User’s Manual for Functions Document No. CP-SP-1324E
Personnel who are using the NX-S11/12/21 for the first time or who are in charge
of hardware design and/or maintenance of a control panel containing the
NX-S11/12/21 should read this manual thoroughly. This manual describes the
hardware, surveys the NX-S11/12/21 and other products used with it, explains
installation, wiring, and troubleshooting, and gives hardware specifications.

vi
Network Instrumentation Modules Digital Output Module Model NX-DY1/2
User’s Manual for Functions Document No. CP-SP-1345E
Personnel who are using the NX-DY1/2 for the first time or who are in charge of
hardware design and/or maintenance of a control panel containing the NX-DY1/2
should read this manual thoroughly.
This manual describes the hardware, surveys the NX-DY1/2 and other products
used with it, explains installation, wiring, and troubleshooting, and gives
hardware specifications.
Network Instrumentation Modules User’s Manual for Network Design Version
Document No. CP-SP-1313E
Personnel who are in charge of design of a network using the Network
Instrumentation Module should read this manual thoroughly.
It describes how to design a network and gives examples.
Network Instrumentation Modules Smart Loader Package Model SLP-NX
Installation Guide Document No. CP-UM-5559JE
This manual is supplied with the SLP-NX Smart Loader Package
and describes installation of the software on a personal computer.
Network Instrumentation Modules Smart Loader Package Model SLP-NX
User’s Manual Document No. CP-UM-5636E
This manual is included in the SLP-NX Smart Loader Package as a PDF file.
Personnel in charge of design or configuration of a system using Network
Instrumentation Modules should read this manual thoroughly.
The manual describes the software that is used to configure Network
Instrumentation Modules with a computer.
The manual describes installation of the software into a PC, operation of the PC,
various functions, and setup procedures.

vii
This manual is organized as shown below.
Chapter 1. Overview
Overview, features, model selection guide, part names, and functions
Chapter 2. Installation
Operating environment and installation procedures
Chapter 3. Wiring
Wiring procedures and precautions, connection examples
Chapter 4. Functions Necessary for Control
Setup of functions critical for operation
Chapter 5. Operation
Setup of normally used functions
Chapter 6. Functions Often Used for Operations Other Than Control
Setup of functions other than control
Chapter 7. Functions Used As Required
Setup of functions for convenient operation
Chapter 8. CPL Communication Function
Communication with a host device (PC, PLC, etc.) using Azbil’s standard CPL
communication and RS-485
Chapter 9. Modbus Communication Function
Communication with a host device (PC, PLC, etc.) using Modbus communication
and RS-485
Chapter 10. CPL/TCP Communication Function
Communication with a host device (PC, PLC, etc.) using CPL/TCP communication
and Ethernet
Chapter 11. Modbus/TCP Communication Function
Communication with a host device (PC, PLC, etc.) using Modbus/TCP
communication and Ethernet
Chapter 12. List of Communication Data
Communication data stored in the controller
Chapter 13. List of Parameter Settings
List of parameter settings
Chapter 14. Troubleshooting
Troubleshooting
Organization of the Manual

viii
Chapter 15. Maintenance, Inspection, and Disposal
Maintenance, inspection and disposal
Chapter 16. Specifications
General specifications, performance specifications, and dimensions
Appendix
Functional block diagrams, standard bits, standard numbers, ROM version history,
and explanation of terms used in the manual.

ix
Contents
Conventions Used in This Manual
Safety Precautions
The Role of This Manual
Organization of the Manual
Chapter 1. Overview 1-1
1 - 1 Overview and Features 1-1
■Overview 1-1
■Features 1-1
1 - 2 Model Selection Table 1-3
■Controller module 1-3
■Communication box 1-3
■Communication adapter, terminal adapter 1-3
1 - 3 Names and Functions of Parts 1-4
■Controller module 1-4
■Communication box 1-5
■Communication adapter 1-6
■Terminal adapter 1-7
1 - 4 Operation Modes 1-8
■Operation modes 1-8
■Input/output of the operation modes 1-8
■Communication availability in each operation mode and status 1-9
■Loop modes 1-11
Chapter 2. Installation 2-1
■Installation location 2-1
■Terminal block installation and removal 2-2
■Module connection 2-4
■Mounting method 2-5
■Installing the main unit onto the base 2-5
■Removing the main unit from the base 2-6
Chapter 3. Wiring 3-1
3 - 1 Wiring Precautions 3-1
■Wiring precautions 3-2
3 - 2 Cables 3-3
3 - 3 Connecting Screw Terminals 3-4
3 - 4 Connecting Screwless Terminals 3-5
■Connection using ferrules 3-5
3 - 5 Terminal Wiring Diagram 3-7
3 - 6 Power Wiring 3-8
■Power wiring 3-8

x
■Noise countermeasures 3-9
■Power supply design 3-10
3 - 7 PV Input Connections 3-11
■PV input (PV1) 3-11
■PV input (PV2) 3-11
■PV input (PV3) 3-11
■PV input (PV4) 3-12
■MFB input (MFB1) 3-12
■MFB input (MFB2) 3-12
3 - 8 Transistor and Digital Output Connections 3-13
■Transistor output 3-13
■Digital output (DO) (optional) 3-13
■Connection with a solid-state relay (SSR) 3-14
3 - 9 Analog Current Output Connections 3-15
■Analog current output (AOC) 3-15
■Connection example with the AVP300 (output type C) 3-16
■Live connection (output type S) 3-16
3 - 10 Analog Voltage Output Connections 3-17
■Analog voltage output (AOV) 3-17
3 - 11 Current Transformer Input Connections 3-18
■Current transformer input (CT) (optional) 3-18
3 - 12 Digital Input (DI) Connections 3-19
■Digital input (DI) (optional) 3-19
3 - 13 Ethernet Communication Connections 3-20
3 - 14 Loader Cable Connections 3-21
3 - 15 RS-485 Communication Connections 3-22
3 - 16 Electrical Noise Sources and Countermeasures 3-25
3 - 17 Input/Output Isolation 3-26
Chapter 4. Functions Necessary for Control 4-1
4 - 1 How to Set the Loop Configuration 4-1
■Settings bank and data fields 4-1
4 - 2 How to Set the PV Input 4-3
■Settings bank and data fields 4-3
■Range types 4-3
■Valid range types 4-4
■Setting method 4-4
4 - 3 How to Set Range-Related Items 4-5
■Settings bank and data fields 4-5
■How to set the range for proportional band 4-5
■How to set up linear scaling 4-7
■How to set up square root extraction 4-7
■How to set up the PV filter 4-8
■How to change the alarm setting 4-8
■How to set the PV ratio and PV bias 4-10

xi
4 - 4 LSP Functions 4-11
■Number of SP groups 4-11
■LSP 4-11
■PID group definition 4-11
■SP group No. 4-11
■SP low and high limits 4-12
■LSP ramp 4-12
■RSP ramp 4-12
4 - 5 How to Set the Decimal Point Position 4-13
■Settings bank and data fields 4-13
4 - 6 How to Set the Loop Control Action 4-14
■Settings bank and data fields 4-14
4 - 7 How to Set Outputs (continuous output and time proportional output) 4-16
■Output types and applications 4-16
■Continuous output settings 4-16
■Time proportional output settings 4-18
■ON/OFF control settings 4-19
■ON/OFF output settings 4-19
4 - 8 How to Set Position Proportional Output 4-20
■Loop settings (for position proportioning) 4-20
■Position proportioning settings 4-21
■PV channel settings for MFB 4-22
■OUT/DO output settings 4-22
■Default settings for position proportional output models 4-23
■Settings 4-24
■Control method selection 4-25
■Dead zone 4-26
■Long life 4-26
■Auto-tuning 4-27
■Motor wiring and operation with auto-tuning 4-28
■Input errors and line breaks 4-32
■Monitoring during operation 4-32
■Wiring to a motor 4-33
■Connection example with the ECM3000 4-34
Chapter 5. Operation 5-1
5 - 1 Operation Settings 5-1
■PWR, RUN, MOD, COM, NST, FAIL 5-1
■PV 1 to 4 5-1
■OP1 to 4 5-2
■F0 to 9 5-3
■Display when power is turned ON 5-4
■LED lighting pattern under special conditions 5-4
■Restoring base EEPROM using the button 5-6
5 - 2 Loop Modes 5-7
■Settings bank and data fields (loop mode switchover) 5-7

xii
■Settings bank and data fields (for MANUAL) 5-7
■Settings bank and data fields (for READY) 5-7
■Settings bank and data fields (for RSP) 5-7
5 - 3 How to Change the Control Mode and Parameters 5-8
■Functional architecture of the SLP-NX 5-8
■How to change parameters 5-8
5 - 4 How to Manually Output the MV (AUTO/MANUAL) 5-10
5 - 5 How to Change to the Remote SP (RSP/LSP) 5-11
5 - 6 How to Stop Control by Switching RUN to READY 5-12
5 - 7 How to Operate the Auto Tuning 5-13
5 - 8 How to Change the SP 5-14
■Changing the LSP used 5-14
■Changing the LSP group selection 5-14
■Changing the RSP used 5-14
5 - 9 How to Change the PID 5-15
■Changing the PID settings 5-15
■Executing auto-tuning 5-15
5 - 10 How to Change the Event Action Point 5-16
5 - 11 PID Control 5-17
■Settings bank and data fields 5-17
■PID control initialization 5-18
5 - 12 Heating/Cooling Control 5-19
■Settings bank and data fields 5-19
■Heating/cooling control calculation 5-20
■Heating/cooling control dead zone 5-20
■High and low limits for heating MV and cooling MV 5-21
5 - 13 ON/OFF Control 5-25
■Settings bank and data fields 5-25
Chapter 6. Functions Often Used for Operations Other Than Control 6-1
6 - 1 How to Use Events 6-1
■Settings bank and data fields 6-1
■Example: PV high limit alarm (activated if an error occurs) 6-2
■Event operation type, direct/reverse, hysteresis, main setting, and sub-setting 6-3
■Loop/channel definition setup 6-8
■Event standby and EVENT state at READY 6-9
■Event decimal point 6-10
■ON delay and OFF delay 6-10
6 - 2 How to Use Internal Contact Input 6-11
■Setup data 6-11
■Example 1: RUN/READY selection using digital input 6-11
■Example 2: SP group selection using digital input 6-12
■Operation type 6-13
■Input type 6-14
■Loop/channel definition 6-14
■Weighting 6-14

xiii
6 - 3 How to Use Digital Output 6-15
■Setup data 6-15
■Example: Turning on DO1 if a PV1 high limit error occurs 6-15
■Output type 6-16
■Latch 6-16
6 - 4 How to Use Multiple SPs 6-17
■Setup data 6-17
■Features 6-17
■Example: Using multiple set points with two LSP groups 6-17
6 - 5 How to Change the LSP with a Constant Ramp 6-19
■Settings bank and data fields 6-19
■Conditions for ramp start 6-19
■Conditions for ramp start with PV as the starting point 6-19
6 - 6 How to Change the RSP with a Constant Ramp 6-20
■Settings bank and data fields 6-20
■Conditions for ramp start 6-20
■Conditions for ramp start with PV as the starting point 6-20
6 - 7 CT (Current Transformer) Input 6-21
■Current measurement range and monitor data range 6-21
■Settings bank and data fields 6-23
■Data items for monitoring 6-23
■CT operation 6-24
■Wait time for CT measurement 6-25
■Number of CT turns 6-25
■Number of CT power line passes 6-25
■Threshold current for determining heater burnout 6-26
■Threshold current for determining overcurrent 6-26
■Threshold current for determining a short circuit 6-27
■Hysteresis 6-27
■Delay time 6-28
■Condition for restoring status before measurement 6-29
■Timing for updating CT current measurement 6-30
■Continuous current measurement cycle 6-31
■How to detect current high/low limit errors 6-31
■How to detect heater burnout 6-31
■How to detect overcurrent 6-32
■How to detect a short circuit 6-32
■How to measure the secondary current of a thyristor power regulator 6-32
■How to measure the current of time proportional output of the module using
a solid-state relay (SSR) 6-33
■How to measure the time proportional output current of a device other than
the module using a solid-state relay (SSR) 6-33
Chapter 7. Functions Used As Required 7-1
7 - 1 Control Algorithm 7-1
■Settings bank and data fields 7-1

xiv
7 - 2 MV When There Is a PV Error 7-2
■Setup data 7-2
■Example 7-2
7 - 3 MV Change Limit 7-3
■Setup data 7-3
■Example 7-3
7 - 4 MV Branching Output 7-4
■Loop mode diagram 7-4
■Setup data 7-5
■Example 7-5
7 - 5 Energy-Saving Time Proportioning 7-7
■Setup data 7-7
■Master/slave selection 7-7
■Time proportional slave channels 7-8
■Example 7-8
■Energy-saving delay time 7-9
7 - 6 Phase Shift 7-10
7 - 7 Approximation by Linearization Table 7-11
■Approximation by linearization table of output 7-11
■Setup data 7-11
■Example 7-12
■When the breakpoint A settings are not in numerical order by size 7-13
■When the A settings include adjacent breakpoints that are the same 7-13
7 - 8 AT (Auto-tuning) 7-14
■Settings bank and data fields 7-14
■AT progress 7-16
■Example 1 7-16
■Example 2 7-17
7 - 9 Zone PID 7-18
■Setup data 7-18
■Example 7-19
7 - 10 Cold Junction Compensation 7-20
■Settings bank and data fields 7-20
7 - 11 Logical Operations 7-21
■Processing sequence for logical operations 7-21
■Settings bank and data fields 7-22
■Example 7-22
■Input assignments A–D 7-23
■Inverted input bits A–D 7-23
■Calculation type 7-23
■Reverse 7-23
■ON-delay time 7-23
■OFF-delay time 7-24
■Latch 7-24
7 - 12 UFLED 7-25
■Settings bank and data fields 7-25
■Lighting status 7-26

xv
7 - 13 Start Delay at Power ON 7-27
■Settings bank and data fields 7-27
7 - 14 User-Defined Bits 7-28
■Example 7-28
7 - 15 User-Defined Number 7-29
■Example 7-29
7 - 16 Data Transfer Function between Modules 7-30
■Settings bank and data fields 7-30
■Supported functions 7-32
7 - 17 Reception Monitoring and Communication Timeout 7-33
■Settings bank and data fields 7-33
■Transmission timeout between modules 7-33
■Signal to supervisor module timeout (standard bit 1982) 7-33
7 - 18 Cycle Settings 7-34
■Settings bank and data fields 7-34
7 - 19 Input Assignment Function 7-35
■Settings bank and data fields 7-35
7 - 20 Just-FiTTER 7-36
■Settings bank and data fields 7-36
7 - 21 SP Lag 7-37
■Settings bank and data fields 7-37
7 - 22 Internal Cascade Control 7-38
■Internal cascade control elements 7-38
■Scaling 7-39
■Internal cascade control setting methods 7-39
7 - 23 IDLE/SV Communication Error Operation 7-41
■Settings bank and data fields 7-41
7 - 24 Fixed Value Output 7-43
■Settings bank and data fields 7-43
■Example 7-44
7 - 25 Zener Barrier Adjustment and Wiring Resistance Correction 7-45
■Settings bank and data fields 7-45
■Wiring during adjustment 7-45
■Setting adjusted values 7-46
■Clearing the adjusted values 7-46
7 - 26 RSP Tracking 7-48
■Settings bank and data fields 7-48
Chapter 8. CPL Communication Function 8-1
8 - 1 Overview of Communication 8-1
■Features 8-1
■Settings 8-1
■Communication process 8-2
8 - 2 Message Structure 8-3
■Message structure 8-3
■Data link layer 8-3

xvi
■Application layer 8-6
8 - 3 Description of Commands 8-7
■Read fixed length continuous data command (RD command) 8-7
■Write fixed length continuous data command (WD command) 8-8
■Read fixed length random data command (RU command) 8-9
■Write fixed length random data command (WU command) 8-10
■Read continuous data command (RS command) 8-11
■Write continuous data command (WS command) 8-12
8 - 4 Data Address Definition 8-13
■RAM and EEPROM areas of data addresses 8-13
8 - 5 Numerical Representation in the Application Layer 8-14
■Hexadecimal 8-14
■Decimal 8-15
8 - 6 End Codes 8-16
■End codes for the read command 8-16
■End codes for the write command 8-16
8 - 7 Reception and Transmission Timing 8-17
■Timing specifications for instruction and response messages 8-17
■Specifications of RS-485 driver control timing 8-17
Chapter 9. Modbus Communication Function 9-1
9 - 1 Overview of Communication 9-1
■Features 9-1
■Settings 9-2
■Communication process 9-2
9 - 2 Message Structure 9-3
■Message structure 9-3
■Command type 9-6
■Exception codes 9-6
■Number of data items 9-6
9 - 3 Description of Commands 9-8
■Read multiple data items command (03H) 9-8
■Write multiple data items command (10H) 9-10
■Write 1 data item command (06H) 9-11
9 - 4 Numeric Value Expression 9-12
■ASCII hexadecimals 9-12
■RTU hexadecimals 9-12
9 - 5 Specifications Common with CPL Communication Function 9-14
■RAM and EEPROM areas of data addresses 9-14
■Specifications of RS-485 driver control timing 9-14
Chapter 10. CPL/TCP Communication Function 10-1
10 - 1 Overview of Communication 10-1
■Features 10-1

xvii
■Settings 10-1
■Communication process 10-2
■Communication process for standard TCP/IP sockets 10-2
10 - 2 Message Structure 10-3
■Message structure 10-3
■Data link layer 10-3
■Application layer 10-6
10 - 3 Description of Commands 10-7
■Read fixed length continuous data command (RD command) 10-7
■Write fixed length continuous data command (WD command) 10-8
■Read fixed length random data command (RU command) 10-9
■Write fixed length random data command (WU command) 10-10
■Read continuous data command (RS command) 10-11
■Write continuous data command (WS command) 10-12
10 - 4 Data Address Definition 10-13
■RAM and EEPROM areas of data addresses 10-13
10 - 5 Numerical Representation in the Application Layer 10-14
■Hexadecimal 10-14
■Decimal 10-15
10 - 6 End Codes 10-16
■End codes for the read command 10-16
■End codes for the write command 10-16
Chapter 11. Modbus/TCP Communication Function 11-1
11 - 1 Overview of Communication 11-1
■Features 11-1
■Settings 11-1
■Communication process 11-2
■Communication process for standard TCP/IP sockets 11-2
11 - 2 Message Structure 11-3
■Message structure 11-3
■Exception code 11-4
■Number of data items 11-4
11 - 3 Description of Commands 11-5
■Application section 11-5
■Read multiple data items command (03H) 11-5
■Write multiple data items command (10H) 11-6
■Write 1 data item command (06H) 11-7
Chapter 12. List of Communication Data 12-1
■Comments on the table 12-2
■Alarm information 12-74
■Instrument internal computation result 12-76
■User-defined bit 12-81

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Chapter 13. List of Parameter Settings 13-1
■Comments on the table 13-2
Chapter 14. Troubleshooting 14-1
■Alarm codes and corrective actions 14-1
■If a touch panel, etc., does not respond after module replacement 14-3
■If the module can no longer communicate with host devices using the CPL/TCP or
Modbus/TCP protocol 14-4
Chapter 15. Maintenance, Inspection, and Disposal 15-1
15 - 1 Maintenance and Inspection 15-1
15 - 2 Module Replacement 15-2
■Replacing the whole module including the base (when using Ethernet
communications) 15-3
■Replacing the whole module including the base (when using the loader cable) 15-7
■Replacing the module while leaving the base 15-12
15 - 3 Disposal 15-13
Chapter 16. Specifications 16-1
16 - 1 Specifications 16-1
■Module specifications 16-1
■PV input 16-1
■Behavior if a PV input error occurs 16-5
■Behavior if an MFB input error occurs 16-6
■Transistor output (position proportional control models) 16-6
■Analog current output 16-6
■Analog voltage output 16-7
■Current transformer input (optional) 16-7
■Digital output (optional) 16-7
■Digital input (optional) 16-8
■Standard conditions 16-8
■Operating conditions 16-8
■Transport and storage conditions 16-9
■Other 16-9
■Communication specifications 16-9
■Communication box (sold separately; model No. NX-CB_ _ _ _ _ _ _) 16-10
■Communication adapters (sold separately, model Nos.: NX-CL1_ _ _ _ , NX-CR1_ _ _ _ ) 16-11
■Terminal adapters (sold separately, model Nos.: NX-TL1_ _ _ _ _ _ , NX-TR1_ _ _ _ _ _) 16-11
■Connector caps (sold separately, model Nos. 80700224-010 (male), 80700225-010
(female)) 16-11