1
FnIO S-Series
FnIO MODBUS Adapter NA-9289
MODBUS TCP Network Adapter
NA-9289
User Manual
Version 1.00
2014 CREVIS Co.,Ltd
Copyright(C) CREVIS Co.,Ltd
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URL : www.crevis.co.kr
2
FnIO MODBUS Adapter NA-9289
FnIO S-Series
DOCUMENT CHANGE SUMMARY
REV
1.00
PAGE
REMARKS
New
Document
Copyright(C) CREVIS Co.,Ltd
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DATE
EDITOR
2014/10/17
YMKIM
3
FnIO MODBUS Adapter NA-9289
FnIO S-Series
CONTENTS
1.
2.
3.
Important Notes ......................................................................................................................................................... 6
1.1.
Safety Instruction ...................................................................................................................................... 7
1.1.1.
Symbols ......................................................................................................................................................... 7
1.1.2.
Safety Notes ................................................................................................................................................ 7
Specification.................................................................................................................................................................. 8
2.1.
The Interface ............................................................................................................................................... 8
2.1.1.
NA-9289(MODBUS TCP) ........................................................................................................................ 8
2.2.
Specification ................................................................................................................................................ 9
2.2.1.
General Specification............................................................................................................................... 9
2.2.2.
Interface Specification........................................................................................................................... 10
2.3.
LED Indicator............................................................................................................................................. 11
2.3.1.
Module Status LED (MOD) ................................................................................................................. 11
2.3.2.
Physical Connection LED (LINK) ....................................................................................................... 11
2.3.3.
Exchange Data/Traffic Present LED(ACTIVE) ............................................................................... 11
2.3.4.
Expansion Module Status LED (IOS)............................................................................................... 12
2.3.5.
Field Power Status LED ........................................................................................................................ 12
Dimension .................................................................................................................................................................... 13
3.1.
4.
5.
NA-9289 ...................................................................................................................................................... 13
Mechanical Setup ..................................................................................................................................................... 14
4.1.
Total Expansion........................................................................................................................................ 14
4.2.
Plugging and Removal of the Components. .............................................................................. 14
Convenience Function ............................................................................................................................................ 15
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6.
7.
8.
FnIO MODBUS Adapter NA-9289
FnIO S-Series
5.1.
Web Server ................................................................................................................................................ 15
5.2.
IAP Functionality...................................................................................................................................... 16
MODBUS Electrical Interface ............................................................................................................................... 18
6.1.
FnBus System ............................................................................................................................................ 18
6.2.
FnBus Pin Description ........................................................................................................................... 20
6.3.
MODBUS/TCP Electrical Interface .................................................................................................... 21
6.3.1.
NA-9289 ...................................................................................................................................................... 21
6.3.2.
DIP Switch .................................................................................................................................................. 22
6.3.3.
MODBUS/TCP IP Address Setup ...................................................................................................... 23
6.3.4.
I/O Process Image Map ....................................................................................................................... 27
6.3.5.
MODBUS Interface Register / Bit Map.......................................................................................... 27
Example......................................................................................................................................................................... 28
7.1.
Example of Input Process Image(Input Register) Map .......................................................... 28
7.2.
Example of Output Process Image(Output Register) Map .................................................. 31
MODBUS/TCP INTERFACE .................................................................................................................................... 33
8.1.
MODBUS/TCP Protocol ........................................................................................................................ 33
8.1.1.
Comparison of MODBUS/TCP And MODBUS/RTU ................................................................. 33
8.1.2.
MODBUS/TCP MBAP Header ............................................................................................................ 34
8.2.
Supported MODBUS Function Codes............................................................................................ 34
8.2.1.
1 (0x01) Read Coils ................................................................................................................................ 35
8.2.2.
2 (0x02) Read Discrete Inputs ........................................................................................................... 35
8.2.3.
3 (0x03) Read Holding Registers ..................................................................................................... 36
8.2.4.
4 (0x04) Read Input Registers ........................................................................................................... 37
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9.
FnIO MODBUS Adapter NA-9289
FnIO S-Series
8.2.5.
5 (0x05) Write Single Coil ................................................................................................................... 38
8.2.6.
6 (0x06) Write Single Register .......................................................................................................... 39
8.2.7.
8 (0x08) Diagnostics .............................................................................................................................. 40
8.2.8.
15 (0x0F) Write Multiple Coils........................................................................................................... 42
8.2.9.
16 (0x10) Write Multiple Registers ................................................................................................. 43
8.2.10.
23 (0x17) Read/Write Multiple Registers ..................................................................................... 44
8.2.11.
Error Response ......................................................................................................................................... 45
8.3.
MODBUS Special Register Map........................................................................................................ 46
8.3.1.
Adapter Identification Special Register (0x1000, 4096) ......................................................... 46
8.3.2.
Adapter Watchdog Time, other Time Special Register (0x1020, 4128) ......................... 47
8.3.3.
Adapter TCP/IP Special Register (0x1040, 4160) ...................................................................... 48
8.3.4.
Adapter Information Special Register (0x1100, 4352)............................................................ 49
8.3.5.
Expansion Slot Information Special Register (0x2000, 8192) .............................................. 50
8.4.
MODBUS Reference ............................................................................................................................... 52
Trouble Shooting...................................................................................................................................................... 53
9.1.
How to diagnose by LED indicator ................................................................................................. 53
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FnIO MODBUS Adapter NA-9289
FnIO S-Series
1. Important Notes
Solid state equipment has operational characteristics differing from those of electromechanical equipment.
Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls describes some important
differences between solid state equipment and hard-wired electromechanical devices.
Because of this difference, and also because of the wide variety of uses for solid state equipment, all persons
responsible for applying this equipment must satisfy themselves that each intended application of this equipment is
acceptable.
In no event will CREVIS be responsible or liable for indirect or consequential damages resulting from the use or
application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables
and requirements associated with any particular installation, CREVIS cannot assume responsibility or liability for actual
use based on the examples and diagrams.
Warning!

If you don’t follow the directions, it could cause a personal injury, damage to the equipment or explosion

Do not assemble the products and wire with power applied to the system. Else it may cause an electric arc, which
can result into unexpected and potentially dangerous action by field devices. Arching is explosion risk in
hazardous locations. Be sure that the area is non-hazardous or remove system power appropriately before
assembling or wiring the modules.

Do not touch any terminal blocks or IO modules when system is running. Else it may cause the unit to an electric
shock or malfunction.

Keep away from the strange metallic materials not related to the unit and wiring works should be controlled by the
electric expert engineer. Else it may cause the unit to a fire, electric shock or malfunction.
Caution!

If you disobey the instructions, there may be possibility of personal injury, damage to equipment or
explosion. Please follow below Instructions.

Check the rated voltage and terminal array before wiring. Avoid the circumstances over 55℃ of temperature.
Avoid placing it directly in the sunlight.

Avoid the place under circumstances over 85% of humidity.

Do not place Modules near by the inflammable material. Else it may cause a fire.

Do not permit any vibration approaching it directly.

Go through module specification carefully, ensure inputs, output connections are made with the specifications. Use
standard cables for wiring.

Use Product under pollution degree 2 environment.
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FnIO MODBUS Adapter NA-9289
1.1.
FnIO S-Series
Safety Instruction
1.1.1. Symbols
Identifies information about practices or circumstances that can cause an explosion in a
hazardous environment, which may lead to personal injury or death property damage or
economic loss.
Identifies information that is critical for successful application and understanding of the
product.
Identifies information about practices or circumstances that can lead to personal
injury, property damage, or economic loss.
Attentions help you to identity a hazard, avoid a hazard, and recognize the consequences.
1.1.2. Safety Notes
The modules are equipped with electronic components that may be destroyed by electrostatic
discharge. When handling the modules, ensure that the environment (persons, workplace and
packing) is well grounded. Avoid touching conductive components, e.g. FnBUS Pin.
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FnIO MODBUS Adapter NA-9289
2. Specification
2.1.
The Interface
2.1.1. NA-9289(MODBUS TCP)
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9
FnIO MODBUS Adapter NA-9289
2.2.
Specification
2.2.1. General Specification
General Specification
System Power
Power Dissipation
Current for I/O Module
Isolation
Field Power
Max. Current Field Power Contact
Weight
Module Size
Supply voltage : 24Vdc nominal
Supply voltage range : 11 ~28.8Vdc
Protection : Output current limit(Min. 1.5A)
Reverse polarity protection
100mA typical @24Vdc
1.5A @5Vdc
System power to internal logic : Non-isolation
System power I/O driver : Isolation
Supply voltage : 24Vdc nominal
Supply voltage range : 11~28.8Vdc
DC 10A Max.
167g
54mm x 99mm x 70mm
Environment Condition
Environmental Specifications
Operating Temperature
Storage Temperature
Relative Humidity
Mounting
General Specifications
Shock Operating
Vibration/shock resistance
-20℃~55℃
-40℃~85℃
5% ~ 90% non-condensing
DIN rail
IEC 60068-2-27
Sine Vibration (Based on IEC 60068-2-6)
5 ~ 25Hz : ±1.6mm
25 ~ 300Hz : 4g
Sweep Rate : 1 Oct/min, 20 Sweeps
Random Vibration (Based on IEC 60068-2-64)
10 ~ 40Hz : 0.0125g²/Hz
40 ~ 100Hz : 0.0125 → 0.002g²/Hz
100 ~ 500Hz : 0.002g²/Hz
EMC resistance burst/ESD
Installation Pos. / Protect. Class
Product Certifications
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500 ~ 2000Hz : 0.002 → 1.3 x 10¯⁴g²/Hz
Test time : 1hrs for each test
EN 61000-6-2 : 2005, EN 61000-6-4/A11 : 2011
Variable/IP20
UL, cUL, CE, FCC, KCC, RoHS(EU,China)
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FnIO MODBUS Adapter NA-9289
FnIO S-Series
2.2.2. Interface Specification
Interface Specification, NA-9289 (MODBUS/TCP Server)
Adapter Type
Max. Expansion Module
Max. Input Size
Max. Output Size
Max. Length Bus Line
Max. Nodes
Baud rate
Protocol
Slave node (MODBUS/TCP, MODBUS/UDP Server)
63 slots
126words (252bytes)
126words (252bytes)
Up to 100m from Ethernet Hub/Switch with twisted CAT 3 UTP/STP
Limited by Ethernet Specification
10/100Mbps, Auto-negotiation, Full duplex
MODBUS/TCP, MODBUS/UDP, DHCP, BOOTP, HTTP
Interface Connector
RJ-45 socket * 2pcs
IP Address Setup
Module Location
Via BOOTP/DHCP or IOGuide(Crevis Configuration Software)
xxx.xxx.xxx.1 ~ 253 (User area)
xxx.xxx.xxx.254 ~ 255 (Reserved for IAP Function)
Node
:
1 (Fixed)
Baud Rate :
115200 (Fixed)
Data bit
:
8 (Fixed)
Parity bit : No parity (Fixed)
Stop bit
:
1 (Fixed)
5 LEDs
1 Green/Red, Module Status (MOD)
1 Green, Physical Connection (LINK)
1 Green, Exchange Data/Traffic Present (ACTIVE)
1 Green/Red Expansion Module Status (IOS)
1 Green, Field Power Status
Starter module – left side of FnIO system
Field Power Detection
About 11Vdc
IP-Address range
Serial Configuration (RS232)
Indicator
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FnIO MODBUS Adapter NA-9289
2.3.
FnIO S-Series
LED Indicator
2.3.1. Module Status LED (MOD)
State
LED is :
To indicate :
No Power
Off
No power is supplied to the unit.
Device Operational
Green
Device in Standby
Flashing Green
MODBUS Error
Green/Red Toggle
Minor Fault
Flashing Red
Unrecoverable Fault
Red
The unit is operating in normal condition.
The device needs commissioning due to configuration missing,
incomplete or incorrect.
MODBUS error such as watchdog error, etc.
Recoverable Fault
- EEPROM sum check error.
The device has an unrecoverable fault.
- Memory error or CPU watchdog error.
2.3.2. Physical Connection LED (LINK)
State
LED is :
To indicate :
Not Powered
Adapter physical
connected
Off
Device may not be powered
Green
Adapter Ethernet Controller Physically connected
2.3.3. Exchange Data/Traffic Present LED(ACTIVE)
State
LED is :
To indicate :
Not Powered
Off
Adapter exchange data
Flashing Green
Device is idle or may not be powered
Adapter (Slave) exchange data/Traffic present.
About 10msec flashing.
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FnIO MODBUS Adapter NA-9289
FnIO S-Series
2.3.4. Expansion Module Status LED (IOS)
State
Not Powered
No Expansion Module
FnBus On-line,
Do not Exchanging I/O
FnBus Connection,
Run Exchanging IO
LED is :
To indicate :
Off
Device has no expansion module or may not be powered
Flashing Green
FnBus is normal but does not exchanging I/O data
(Passed the expansion module configuration).
Green
Exchanging I/O data
FnBus connection fault
during exchanging IO
Red
Expansion
Configuration Failed
Flashing Red
One or more expansion module occurred in fault state.
- Changed expansion module configuration.
- FnBus communication failure.
Failed to initialize expansion module
- Detected invalid expansion module ID.
- Overflowed Input / Output Size
- Too many expansion module
- Initial protocol failure
- Mismatch vendor code between adapter and expansion module.
2.3.5. Field Power Status LED
State
Not Supplied Field
Power
Supplied Field Power
LED is :
To indicate :
Off
Not supplied 24V dc field power
Green
Supplied 24V dc field power
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FnIO MODBUS Adapter NA-9289
FnIO S-Series
3. Dimension
3.1.
NA-9289
(mm)
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FnIO MODBUS Adapter NA-9289
FnIO S-Series
4. Mechanical Setup
4.1.
Total Expansion
The number of the module assembly that can be connected is 63. So the maximum length is 426mm Exception.
ST-2748 is excepted to calculate maximum length because that is double width module.
4.2.
Plugging and Removal of the Components.
As above figure in order to safeguard the FnIO module from jamming, it should be fixed onto the DIN rail with locking
level. To do so, fold on the upper of the locking lever.
To pull out the FnIO module, unfold the locking lever as below figure.
Before work is done on the components, the voltage supply must be turned
off.
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FnIO MODBUS Adapter NA-9289
FnIO S-Series
5. Convenience Function
5.1.
Web Server
NA-9289’s IP addresses can be set as “XXX.XXX.XXX. 1 to 253”.
After setting up its IP address, enter its IP address to the web.
Then, NA-9289’s basic information such as its status, configuration and etc. will be checked via its web browser.
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FnIO MODBUS Adapter NA-9289
5.2.
IAP Functionality
After setting up the dip switch as 254 or 255, Power off and on in order to start the IAP mode.
(254= Fixed IP Address(192.168.0.100) / 255= Last used IP Address)
After Login the Web Browser connecting.
(User ID : Crevis , Password : Crevis)
To update the binary file.
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FnIO S-Series
17
FnIO MODBUS Adapter NA-9289
Has been updated. Please reboot the adapter.
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FnIO S-Series
18
FnIO MODBUS Adapter NA-9289
6. MODBUS Electrical Interface
6.1.
FnBus System
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19
FnIO MODBUS Adapter NA-9289
FnIO S-Series
• Network Adapter Module
The Network Adapter Module forms the link between the field bus and the field devices with the Expansion
Modules.
The connection to different field bus systems can be established by each of the corresponding Network Adapter
Module, e.g. for SyncNet, PROFIBUS, CANopen, DeviceNet, Ethernet/IP, CC-Link, MODBUS/Serial,
MODBUS/TCP etc.
• Expansion Module
The Expansion Modules are supported a variety of input and output field devices.
There are digital and analog input/output modules and special function modules.
• Two types of FnBus Message
- Service Messaging
- I/O Messaging
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FnIO MODBUS Adapter NA-9289
6.2.
FnIO S-Series
FnBus Pin Description
Communication between the NA series and the expansion module as well as system / field power supply of the bus
modules is carried out via the internal bus. It is comprised of 6 data pin and 2 field power pin.
No.
1
2
3
4
5
6
7
8
Name
Vcc
GND
Token Output
Serial Output
Serial Input
Reserved
Field GND
Field Vcc
Description
System supply voltage (5V dc).
System Ground.
Token output port of Processor module.
Transmitter output port of Processor module.
Receiver input port of Processor module.
Reserved for bypass Token.
Field Ground.
Field supply voltage (24Vdc).
Do not touch data and field power pins in order to avoid soiling and damage
by ESD noise.
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FnIO S-Series
FnIO MODBUS Adapter NA-9289
6.3.
MODBUS/TCP Electrical Interface
6.3.1. NA-9289
RJ-45
Shielded RJ-45 Socket
1
2
3
4
5
6
7
8
Case
Signal
Name
TD+
TDRD+
RDShield
Description
Transmit +
Transmit Receive +
Receive -
MODBUS/TCP Network Setup is like following.
The use of an incorrect supply voltage or frequency can cause severe damage
to the component.
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FnIO MODBUS Adapter NA-9289
FnIO S-Series
6.3.2. DIP Switch
DIP
Pole#
1
2
3
4
5
6
7
8
9
10
Description
IP_DIP bit#0
Lowest IP Address
when Pole#10=ON,
IP_DIP bit#1
then IP Address will be
IP_DIP bit#2
XXX.XXX.XXX.IP_DIP
IP_DIP bit#3
IP_DIP bit#4
IP_DIP bit#5
IP_DIP bit#6
IP_DIP bit#7
= ON : Enable DHCP/BOOTP *
=ON : Use Lowest IP Address with IP_DIP value
*DHCP/BOOTP have to be set in special register(defualt : BOOTP).
(0x1045).
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FnIO MODBUS Adapter NA-9289
6.3.3. MODBUS/TCP IP Address Setup
•
IP-Address Setup using by DIP switch (Manual function)
If the adapter DIP Pole#10 is ON, lowest IP address is set by DIP Pole#1~#8 manually.
These are examples of adapter IP-Address setup by manual function.
Ex) xxx . xxx . xxx . 1
Ex) xxx . xxx . xxx . 2
Ex) xxx . xxx . xxx . 8
Ex) xxx . xxx . xxx . 253
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24
FnIO MODBUS Adapter NA-9289
•
FnIO S-Series
IP-Address Setup using BOOTP/DHCP Server
The following is an example of adapter IP-Address setup using CREVIS IO Guide Pro’s BOOTP server.
Click ‘Start Bootp’ to enable Bootp server to detect Bootp request on the network.
If the adapter is Bootp/DHCP enabled (Dip Pole #9 ON), adapter will send Bootp/DHCP request 20times every
5seconds, after power reset.
If Bootp/DHCP server does not response, adapter will use the latest saved IO address in EEPROM.
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FnIO MODBUS Adapter NA-9289
Double-click on one of the detected ‘Bootp request message’ and set the IP address.
The IP address setting is completed.
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FnIO S-Series
26
FnIO MODBUS Adapter NA-9289
Check IP address of the normal.
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FnIO MODBUS Adapter NA-9289
FnIO S-Series
6.3.4. I/O Process Image Map
An expansion module may have 3 types of data as I/O data, configuration parameter and memory register.
The data exchange between network adapter and expansion modules is done via an I/O process image data by
FnBus protocol. The following figure shows the data flow of process image between network adapter and
expansion modules.
6.3.5. MODBUS Interface Register / Bit Map
 Register Map
Start Address
0x0000 ~
0x0800 ~
Read/Write
Read
Read/Write
Description
Process input image registers (Real Input Register)
Process output image registers (Real Output Register)
0x1000 ~
Read
Adapter Identification special registers.
0x1020 ~
Read/Write
Adapter Watchdog, other time special register.
0x1100 ~
Read/Write
Adapter Information special registers.
0x2000 ~
Read/Write
Expansion Slot Information special registers.
* The special register map must be accessed by read/write of every each address (one address).
Func. Code
4, 23
3, 16, 23
3, 4, 23
3, 4, 6, 16, 23
3, 4, 6, 16, 23
3, 4, 6, 16, 23
 Bit Map
Start Address
0x0000 ~
Read/Write
Read
0x1000 ~
Read/Write
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Description
Process input image bits
All input registers area is addressable by bit address.
Size of input image bit is size of input image register * 16.
Process output image bits
All output registers area is addressable by bit address.
Size of output image bit is size of output image register * 16.
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Func. Code
2
1, 5, 15
28
FnIO S-Series
FnIO MODBUS Adapter NA-9289
7. Example
7.1.
Example of Input Process Image(Input Register) Map
Input image data depends on slot position and expansion slot data type. Input process image data is only ordered
by expansion slot position when input image mode is uncompressed (mode 0, 2). But, when input image mode is
compressed (mode 1, 3), input process image data is ordered by expansion slot position and slot data type.
Input process image mode can be set by special register 0x1114(4372). Refer to 6.3.3.
 For example slot configuration
Slot Address
#0
#1
#2
#3
#4
#5
#6
#7
#8
#9
#10
Module Description
MODBUS Adapter
4-discrete input
8-discrete input
2-analog input
16-discrete input
4-discrete input
8-discrete input
4-discrete input
2-analog input
16-discrete input
4-discrete input
 Input Process Image Mode#0 (Status(1word) +
Status
(1word)
Uncompressed Input Processing Data)
Addr.
#15 #14 #13 #12 #11 #10
#9
#8
0x0000 EW
0
0
0
0
0
0
0
0x0001
Discrete In 8pts (Slot#2)
0x0002
Analog Input Ch0 high byte (Slot#3)
0x0003
Analog Input Ch1 high byte (Slot#3)
0x0004
Discrete In high 8pts (Slot#4)
0x0005
Discrete In 8pts (Slot#6)
0x0006
Analog Input Ch0 low byte (Slot#8)
0x0007
Analog Input Ch1 low byte (Slot#8)
0x0008
Discrete In low 8pts (Slot#9)
0x0009
Empty, Always 0
Discrete In 4pts (Slot#10)
 FnBus Status :
0: Normal Operation
2: FnBus Communication Fault
4: No Expansion Slot

#6
#5
#4
#3
#2
#1
#0
FnBus Status
Empty, Always 0
Discrete In 4pts (Slot#1)
Analog Input Ch0 low byte (Slot#3)
Analog Input Ch1 low byte (Slot#3)
Discrete In low 8pts (Slot#4)
Empty, Always 0
Discrete In 4pts (Slot#5)
Empty, Always 0
Discrete In 4pts (Slot#7)
Analog Input Ch0 high byte (Slot#8)
Analog Input Ch1 high byte (Slot#8)
Discrete In high 8pts (Slot#9)
1: FnBus Standby
3: Slot Configuration Failed
FP (Field Power) :
0: 24Vdc Field Power On.

#7
FP
1: 24Vdc Field Power Off
EW (MODBUS Error Watchdog) :
0: No Error Watchdog
1: Error Watchdog once more since its last restart, clear counters operation, or power-up.
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29
FnIO S-Series
FnIO MODBUS Adapter NA-9289
 Input Process Image Mode#1 (Status(1word) + Compressed Input Processing Data)
Status
(1word)
Addr.
0x0000
0x0001
0x0002
0x0003
0x0004
0x0005
0x0006
0x0007
0x0008

#15
EW
#14 #13 #12 #11 #10
#9
#8
0
0
0
0
0
0
0
Analog Input Ch0 high byte (Slot#3)
Analog Input Ch1 high byte (Slot#3)
Analog Input Ch0 high byte (Slot#8)
Analog Input Ch1 high byte (Slot#8)
Discrete In low 8pts (Slot#4)
Discrete In 8pts (Slot#6)
Discrete In high 8pts (Slot#9)
Discrete In 4pts (Slot#10) Discrete In 4pts (Slot#7)
#7
FP
#6
#5
#4
#3
#2
#1
#0
FnBus Status
Analog Input Ch0 low byte (Slot#3)
Analog Input Ch1 low byte (Slot#3)
Analog Input Ch0 low byte (Slot#8)
Analog Input Ch1 low byte (Slot#8)
Discrete In 8pts (Slot#2)
Discrete In high 8pts (Slot#4)
Discrete In low 8pts (Slot#9)
Discrete In 4pts (Slot#5)
Discrete In 4pts (Slot#1)
Input Assembly Priority :
1)
2)
3)
4)
Analog Input Data (Word type)
8 or 16 points Discrete Input Data (Byte type)
4 points Input Data (Bit type)
2 points Input Data (Bit type)
 Input Process Image Mode#2 (Uncompressed Input Processing Data without Status), default input image
Addr.
0x0000
0x0001
0x0002
0x0003
0x0004
0x0005
0x0006
0x0007
0x0008
#15
#14
#13 #12 #11 #10
#9
#8
Discrete In 8pts (Slot#2)
Analog Input Ch0 high byte (Slot#3)
Analog Input Ch1 high byte (Slot#3)
Discrete In high 8pts (Slot#4)
Discrete In 8pts (Slot#6)
Analog Input Ch0 low byte (Slot#8)
Analog Input Ch1 low byte (Slot#8)
Discrete In low 8pts (Slot#9)
Empty, Always 0
Discrete In 4pts (Slot#10)
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#7
#6
#5
#4
#3
#2
#1
#0
Empty, Always 0
Discrete In 4pts (Slot#1)
Analog Input Ch0 low byte (Slot#3)
Analog Input Ch1 low byte (Slot#3)
Discrete In low 8pts (Slot#4)
Empty, Always 0
Discrete In 4pts (Slot#5)
Empty, Always 0
Discrete In 4pts (Slot#7)
Analog Input Ch0 high byte (Slot#8)
Analog Input Ch1 high byte (Slot#8)
Discrete In high 8pts (Slot#9)
URL : www.crevis.co.kr
30
FnIO MODBUS Adapter NA-9289
FnIO S-Series
 Input Process Image Mode#3 (Compressed Input Processing Data without Status)
Addr.
0x0000
0x0001
0x0002
0x0003
0x0004
0x0005
0x0006
0x0007
#15
#14 #13 #12 #11 #10
#9
#8
Analog Input Ch0 high byte (Slot#3)
Analog Input Ch1 high byte (Slot#3)
Analog Input Ch0 high byte (Slot#8)
Analog Input Ch1 high byte (Slot#8)
Discrete In low 8pts (Slot#4)
Discrete In 8pts (Slot#6)
Discrete In high 8pts (Slot#9)
Discrete In 4pts (Slot#10) Discrete In 4pts (Slot#7)
#7
#6
#5
#4
#3
#2
#1
#0
Analog Input Ch0 low byte (Slot#3)
Analog Input Ch1 low byte (Slot#3)
Analog Input Ch0 low byte (Slot#8)
Analog Input Ch1 low byte (Slot#8)
Discrete In 8pts (Slot#2)
Discrete In high 8pts (Slot#4)
Discrete In low 8pts (Slot#9)
Discrete In 4pts (Slot#5)
Discrete In 4pts (Slot#1)
* FnBus uses the byte-oriented register mapping.
* Size of input image bit is size of input image register *16.

Input Assembly Priority :
1)
2)
3)
4)
Analog Input Data (Word type)
8 or 16 points Discrete Input Data (Byte type)
4 points Input Data (Bit type)
2 points Input Data (Bit type)
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31
FnIO MODBUS Adapter NA-9289
7.2.
FnIO S-Series
Example of Output Process Image(Output Register) Map
Output image data depends on slot position and expansion slot data type. Output process image data is only
ordered by expansion slot position when output image mode is uncompressed (mode 0). But, when output image
mode is compressed (mode 1), output process image data is ordered by expansion slot position and slot data type.
Output process image mode can be set by special register 0x1115(4373). Refer to 6.3.3.
 For example slot configuration
Slot Address
#0
#1
#2
#3
#4
#5
#6
#7
#8
#9
#10
#11
Module Description
MODBUS Adapter
4-discrete output
8-discrete output
2-analog output
16-discrete output
4-discrete output
8-discrete output
2-relay output
2-relay output
2-analog output
16-discrete output
4-discrete output
 Output Process Image Mode#0 (Uncompressed Output Processing Data), default output image
Addr.
0x0800
0x0801
0x0802
0x0803
0x0804
#15
#14
0x0805
#13 #12 #11 #10
#9
#8
Discrete out 8pts (Slot#2)
Analog out Ch0 high byte (Slot#3)
Analog out Ch1 high byte (Slot#3)
Discrete out high 8pts (Slot#4)
Discrete out 8pts (Slot#6)
Discrete
Empty, Don’t care
out 2pts
0x0806
0x0807
0x0808
Analog out Ch0 high byte (Slot#9)
Analog out Ch1 high byte (Slot#9)
Discrete out high 8pts (Slot#10)
0x0809
Empty, Don’t care
#7
#6
#5
#4
#3
#2
#1
#0
Empty, Don’t care
Discrete out 4pts (Slot#1)
Analog out Ch0 low byte (Slot#3)
Analog out Ch1 low byte (Slot#3)
Discrete out low 8pts (Slot#4)
Empty, Don’t care
Discrete out 4pts (Slot#5)
Discrete
Empty, Don’t care
out 2pts
(Slot#8)
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(Slot#7)
Analog out Ch0 low byte (Slot#9)
Analog out Ch1 low byte (Slot#9)
Discrete out low 8pts (Slot#10)
Discrete out 4pts
Empty, Don’t care
(Slot#11)
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32
FnIO MODBUS Adapter NA-9289
FnIO S-Series
 Output Process Image Mode#1 (Compressed Output Processing Data)
Addr.
0x0800
0x0801
0x0802
0x0803
0x0804
0x0805
0x0806
0x0807
#15
#14 #13 #12 #11 #10
#9
#8
Analog out Ch0 high byte (Slot#3)
Analog out Ch1 high byte (Slot#3)
Analog out Ch0 high byte (Slot#9)
Analog out Ch1 high byte (Slot#9)
Discrete out low 8pts (Slot#4)
Discrete out 8pts (Slot#6)
Discrete out high 8pts (Slot#10)
Discrete
Discrete
Discrete out 4pts
Out 2pts
Out 2pts
(Slot#11)
(Slot#8)
#7
#6
#5
#4
#3
#2
#1
Analog out Ch0 low byte (Slot#3)
Analog out Ch1 low byte (Slot#3)
Analog out Ch0 low byte (Slot#9)
Analog out Ch1 low byte (Slot#9)
Discrete out 8pts (Slot#2)
Discrete out high 8pts (Slot#4)
Discrete out low 8pts (Slot#10)
Discrete out 4pts (Slot#5)
(Slot#7)
* FnBus uses the byte-oriented register mapping.
* Size of input image bit is size of input image register *16.

Output Assembly Priority :
1)
2)
3)
4)
Analog Output Data (Word type)
8 or 16 points Discrete Output Data (Byte type)
4 points Output Data (Bit type)
2 points Output Data (Bit type)
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#0
Discrete out 4pts (Slot#1)
33
FnIO MODBUS Adapter NA-9289
FnIO S-Series
8. MODBUS/TCP INTERFACE
8.1.
MODBUS/TCP Protocol
The MODBUS messaging service provides a Client/Server communication between devices connected on an Ethernet
TCP/IP network. All MODBUS/TCP messages are sent via TCP on registered port 502.
8.1.1. Comparison of MODBUS/TCP And MODBUS/RTU
This header provides some differences compared to the MODBUS RTU application data unit used on serial line:
 The MODBUS ‘slave addresses’ field usually used on MODBUS Serial Line is replaced by a single byte ‘Unit
Identifier’ within the MBAP Header. The ‘Unit Identifier’ is used to communicate via devices such as bridges,
routers and gateways that use a single IP address to support multiple independent MODBUS end units.
 All MODBUS requests and responses are designed in such a way that the recipient can verify that a message is
finished. For function codes where the MODBUS PDU has a fixed length, the function code alone is sufficient. For
function codes carrying a variable amount of data in the request or response, the data field includes a byte count.
 When MODBUS is carried over TCP, additional length information is carried in the MBAP header to allow the
recipient to recognize message boundaries even if the message has been split into multiple packets for transmission.
The existence of explicit and implicit length rules and use of a CRC-32 error check code (on Ethernet) results in an
infinitesimal chance of undetected corruption to a request or response message.
MODBUS/TCP
MBAP Header
7 chars
Function
1 char
Data
Up to 252 chars
MODBUS/RTU
Start
Address
Function
Data
CRC Check
≥ 3.5 chars
1 char
1 char
Up to 252 chars
2 chars
Function and data field of MODBUS/TCP are identical to function and data field of MODBUS/RTU.
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End
≥ 3.5 chars
34
FnIO S-Series
FnIO MODBUS Adapter NA-9289
8.1.2. MODBUS/TCP MBAP Header
The MBAP (MODBUS Application Protocol) header contains the following fields.
Fields
Length
Transaction
Identifier
2 bytes
Protocol
Identifier
2 bytes
Length
2 bytes
Unit
Identifier
1 byte
Description
Identification of a
MODBUS Request
/Response transaction.
Client
Server
Initialized by the client
Recopied by the server from the
received
0 = MODBUS protocol
Initialized by the client
Number of following
bytes
Identification of a
remote slave connected
on a serial line or on
other buses.
Initialized by the client
(Request)
Initialized by the client
Recopied by the server from the
received
Initialized by the server
(Response)
Recopied by the server from the
received
 Transaction Identifier - It is used for transaction pairing, the MODBUS server copies in the response the
transaction identifier of the request.
 Protocol Identifier – It is used for intra-system multiplexing.
The MODBUS protocol is identified by the value 0.
 Length - The length field is a byte count of the following fields, including the Unit Identifier and data fields.
 Unit Identifier – This field is used for intra-system routing purpose. Typically MODBUS server must be
returned with the same value set by MODBUS client.
8.2.
Supported MODBUS Function Codes
Function Code
-
Function
Description
1 (0x01)
2 (0x02)
3 (0x03)
4 (0x04)
5 (0x05)
6 (0x06)
8 (0x08)
15 (0x0F)
16 (0x10)
Read Coils
Read Discrete Inputs
Read Holding Registers
Read Input Registers
Write Single Coil
Write Single Register
Diagnostics (Serial Line only)
Write Multiple Coils
Write Multiple registers
23 (0x17)
Read / Write Multiple register
Read output bit
Read input bit
Read output word
Read input word
Write one bit output
Write one word output
Read diagnostic register
Write a number of output bits
Write a number of output words
Read a number of input words /
Write a number of output words
Refer to MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1a
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35
FnIO MODBUS Adapter NA-9289
FnIO S-Series
8.2.1. 1 (0x01) Read Coils
This function code is used to read from 1 to 2000 contiguous status of coils in a remote device. The Request PDU
specifies the starting address, i.e. the address of the first coil specified, and the number of coils. In the PDU Coils
are addressed starting at zero. Therefore coils numbered 1-16 are addressed as 0-15. The coils in the response
message are packed as one coil per bit of the data field. Status is indicated as 1= ON and 0= OFF.
 Request
Field name
Function Code
Starting Address Hi
Starting Address Lo
Quantity of Output Hi
Quantity of Output Lo
Example
0x01
0x10
0x00
0x00
0x0A
 Response
Field name
Function Code
Byte Count
Output Status
Output Status
-
Example
0x01
0x02
0x55
0x02
In case of address 0x1015~0x1000 output bit value: 00000010_01010101.
8.2.2. 2 (0x02) Read Discrete Inputs
This function code is used to read from 1 to 2000 contiguous status of discrete inputs in a remote device. The
Request PDU specifies the starting address, i.e. the address of the first input specified, and the number of inputs. In
the PDU Discrete Inputs are addressed starting at zero. Therefore Discrete inputs numbered 1-16 are addressed as
0-15. The discrete inputs in the response message are packed as one input per bit of the data field.
Status is indicated as 1= ON; 0= OFF.
 Request
Field name
Function Code
Starting Address Hi
Starting Address Lo
Quantity of Inputs Hi
Quantity of Inputs Lo
Example
0x02
0x00
0x00
0x00
0x0A
 Response
Field name
Function Code
Byte Count
Input Status
Input Status
-
Example
0x02
0x02
0x80
0x00
In case of address 0x0015~0x0000 output bit value: 00000000_10000000.
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36
FnIO MODBUS Adapter NA-9289
FnIO S-Series
8.2.3. 3 (0x03) Read Holding Registers
This function code is used to read the contents of a contiguous block of holding registers in a remote device. The
Request PDU specifies the starting register address and the number of registers.
The register data in the response message are packed as two bytes per register, with the binary contents right
justified within each byte. For each register, the first byte contains the high order bits and the second contains the
low order bits.
 Request
Field name
Function Code
Starting Address Hi
Starting Address Lo
Quantity of Register Hi
Quantity of Register Lo
Example
0x03
0x08
0x00
0x00
0x02
 Response
Field name
Function Code
Byte Count
Output Register #0 Hi
Output Register #0 Lo
Output Register #1 Hi
Output Register #1 Lo
-
Example
0x03
0x04
0x11
0x22
0x33
0x44
In case of address 0x0800, 0x0801 output register value: 0x1122, 0x3344.
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37
FnIO MODBUS Adapter NA-9289
FnIO S-Series
8.2.4. 4 (0x04) Read Input Registers
This function code is used to read from 1 to approx. 125 contiguous input registers in a remote device. The
Request PDU specifies the starting register address and the number of registers. The register data in the response
message are packed as two bytes per register, with the binary contents right justified within each byte. For each
register, the first byte contains the high order bits and the second contains the low order bits.
 Request
Field name
Function Code
Starting Address Hi
Starting Address Lo
Quantity of Register Hi
Quantity of Register Lo
Example
0x04
0x00
0x00
0x00
0x02
 Response
Field name
Function Code
Byte Count
Input Register #0 Hi
Input Register #0 Lo
Input Register #1 Hi
Input Register #1 Lo
-
Example
0x03
0x04
0x00
0x80
0x00
0x00
In case of address 0x0000, 0x0001 input register value: 0x0080, 0x0000.
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38
FnIO MODBUS Adapter NA-9289
FnIO S-Series
8.2.5. 5 (0x05) Write Single Coil
This function code is used to write a single output to either ON or OFF in a remote device. The requested ON/OFF
state is specified by a constant in the request data field. A value of FF 00 hex requests the output to be ON. A value
of 00 00 requests it to be OFF. All other values are illegal and will not affect the output.
 Request
Field name
Function Code
Starting Address Hi
Starting Address Lo
Quantity of Outputs Hi
Quantity of Outputs Lo
Example
0x05
0x10
0x01
0xFF
0x00
 Response
Field name
Function Code
Output Address Hi
Output Address Lo
Output Value Hi
Output Value Lo
-
Example
0x05
0x10
0x01
0xFF
0x00
Output bit of address 0x1001 turns ON.
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39
FnIO MODBUS Adapter NA-9289
FnIO S-Series
8.2.6. 6 (0x06) Write Single Register
This function code is used to write a single holding register in a remote device. Therefore register numbered 1 is
addressed as 0. The normal response is an echo of the request, returned after the register contents have been
written.
 Request
Field name
Function Code
Starting Address Hi
Starting Address Lo
Quantity of Outputs Hi
Quantity of Outputs Lo
Example
0x06
0x08
0x00
0x11
0x22
 Response
Field name
Function Code
Output Address Hi
Output Address Lo
Output Value Hi
Output Value Lo
-
Example
0x06
0x08
0x00
0x11
0x22
In case of address 0x0800 outputs register value: 0x0000 changes to 0x1122.
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40
FnIO MODBUS Adapter NA-9289
FnIO S-Series
8.2.7. 8 (0x08) Diagnostics
MODBUS function code 08 provides a series of tests for checking the communication system between a client
(Master) device and a server (Slave), or for checking various internal error conditions within a server.
The function uses a two–byte sub-function code field in the query to define the type of test to be performed. The
server echoes both the function code and sub-function code in a normal response. Some of the diagnostics cause
data to be returned from the remote device in the data field of a normal response.
 Request
Field name
Function Code
Sub-Function Hi
Sub-Function Lo
Data Hi
Data Lo
Example
0x08
0x00
0x00
0x11
0x22
 Response
Field name
Function Code
Sub-Function Hi
Sub-Function Lo
Data Hi
Data Lo

Sub-function 0x0000(0) Return Query Data
The data passed in the request data field is to be returned (looped back) in the response.
The entire response message should be identical to the request.
Sub-function
0x0000(0)

Example
0x08
0x00
0x00
0x11
0x22
Data Field (Request)
Any
Data Field (Response)
Echo Request Data
Description
Sub-function 0x0001(1) Restart Communications Option
The remote device could be initialized and restarted, and all of its communications event counters are cleared.
Especially, data field 0x55AA makes the remote device to restart with factory default setup of EEPROM.
Sub-function
0x0001(1)
0x0001(1)
Data Field (Request)
0x0000, 0xFF00
0x55AA
Data Field (Response)
Echo Request Data
Echo Request Data
0x0001(1)
0x55AA+0xAB7B+Sumcheck 4)
Echo Request Data
0x0001(1)
0x55AA+0xAA55+Sumcheck 4)
Echo Request Data
1),2),3) All expansion slot configuration parameters are cleared.
2),3) IP Address, Subnet Mask Address, Gateway Address will be the factory defaults value.
3) Mac Address will be the factory default value.
4) Refer to 2.9.1 for Sumcheck (0x1006)
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Description
Reset
Reset with Default
Setting 1)
Reset with Factory
default 2)
Reset with Factory
default 3)
41

FnIO MODBUS Adapter NA-9289
FnIO S-Series
Sub-function 0x000A(10) Clear Counters and Diagnostic Register
The goal is to clear all counters and the diagnostic register. Counters are also cleared upon power–up.
Sub-function
0x000A(10)
Data Field (Request)
0x0000
Data Field (Response)
Echo Request Data
Description

Sub-function 0x000B(11) Return Bus Message Count
The response data field returns the quantity of messages that the remote device has detected on the
communications system since its last restart, clear counters operation, or power–up.
Sub-function
Data Field (Request)
Data Field (Response)
Description
0x000B(11)
0x0000
Total Message Count

Sub-function 0x000D(13) Return Bus Exception Error Count
The response data field returns the quantity of MODBUS exception responses returned by the remote device since
its last restart, clear counters operation, or power–up.
Exception responses are described and listed in section 6.2.11.
Sub-function
Data Field (Request)
Data Field (Response)
Description
0x000D(13)
0x0000
Exception Error Count

Sub-function 0x000E(14) Return Slave Message Count
The response data field returns the quantity of messages addressed to the remote device, or broadcast, that the
remote device has processed since its last restart, clear counters operation, or power–up.
Sub-function
Data Field (Request)
Data Field (Response)
Description
0x000E(14)
0x0000
Slave Message Count

Sub-function 0x000F(15) Return Slave No Response Count
The response data field returns the quantity of messages addressed to the remote device for which it has returned no
response (neither a normal response nor an exception response), since its last restart, clear counters operation, or power–up.
Sub-function
Data Field (Request)
Data Field (Response)
Description
0x000F(15)
0x0000
Slave No Response Count

Sub-function 0x0064(100) Return Slave MODBUS, FnBus Status
The response data field returns the status of MODBUS and FnBus addressed to the remote device.
This status values are identical with status 1word of input process image. Refer to 5.3.1.
Sub-function
Data Field (Request)
Data Field (Response)
Description
0x0064(100)
0x0000
MODBUS, FnBus Status
Same as status 1word

Sub-function 0x0065(101) Return Slave MODBUS, Error Count
The response data field returns the quantity of watchdog error addressed to the remote device since its last restart,
clear counters operation, or power–up.
Sub-function
Data Field (Request)
Data Field (Response)
Description
0x0065(101)
0x0000
Watchdog Error Count

Sub-function 0x0066(102) Change Slave IO Output Status
The sub-function with data fields is to clear watchdog counter and change IO output status. This may be used to simulate
clear output and fault output.
Sub-function
Data Field (Request)
Data Field (Response)
Description
0x0066(102)
0x0000
Echo Request Data
Ready output,
Automatically turns
Normal output
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42
FnIO MODBUS Adapter NA-9289
0x0066(102)
0x0066(102)
0x0066(102)
0x0001, 0x0002, 0x0003
0x0004
0x0005, 0x0006, 0x0007
Echo Request Data
Echo Request Data
Echo Request Data
FnIO S-Series
Clear output
Normal output
Fault output
8.2.8. 15 (0x0F) Write Multiple Coils
This function code is used to force each coil in a sequence of coils to either ON or OFF in a remote device. The
Request PDU specifies the coil references to be forced. Coils are addressed starting at zero. A logical '1' in a bit
position of the field requests the corresponding output to be ON. A logical '0' requests it to be OFF.
The normal response returns the function code, starting address, and quantity of coils forced.
 Request
Field name
Function Code
Starting Address Hi
Starting Address Lo
Quantity of Outputs Hi
Quantity of Outputs Lo
Byte Count
Output Value #0
Output Value #1
Example
0x0F
0x10
0x00
0x00
0x0A
0x02
0x55
0x01
 Response
Field name
Function Code
Starting Address Hi
Starting Address Lo
Quantity of Outputs Hi
Quantity of Outputs Lo
-
Example
0x0F
0x10
0x00
0x00
0x0A
In case of address 0x1015~0x1000 output bit value: 00000000_00000000 changes to 00000001_01010101.
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43
FnIO MODBUS Adapter NA-9289
FnIO S-Series
8.2.9. 16 (0x10) Write Multiple Registers
This function code is used to write a block of contiguous registers (1 to approx. 120 registers) in a remote device.
The requested written values are specified in the request data field. Data is packed as two bytes per register.
The normal response returns the function code, starting address, and quantity of registers written.
 Request
Field name
Function Code
Starting Address Hi
Starting Address Lo
Quantity of Registers Hi
Quantity of Registers Lo
Byte Count
Register Value #0 Hi
Register Value #0 Lo
Register Value #1 Hi
Register Value #1 Lo
Example
0x0F
0x10
0x08
0x00
0x02
0x04
0x11
0x22
0x33
0x44
 Response
Field name
Function Code
Starting Address Hi
Starting Address Lo
Quantity of Outputs Hi
Quantity of Outputs Lo
-
Example
0x0F
0x10
0x00
0x00
0x02
In case of address 0x0800, 0x0801 output register value: 0x0000, 0x0000 changes to 0x1122, 0x3344.
Copyright(C) CREVIS Co.,Ltd
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44
FnIO MODBUS Adapter NA-9289
8.2.10.
FnIO S-Series
23 (0x17) Read/Write Multiple Registers
This function code performs a combination of one read operation and one write operation in a single MODBUS
transaction. The write operation is performed before the read. The request specifies the starting address and
number of holding registers to be read as well as the starting address, number of holding registers, and the data to
be written. The byte count specifies the number of bytes to follow in the write data field.
The normal response contains the data from the group of registers that were read. The byte count field specifies the
quantity of bytes to follow in the read data field.
 Request
Field name
Function Code
Read Starting Address Hi
Read Starting Address Lo
Quantity of Read Hi
Quantity of Read Lo
Write Starting Address Hi
Write Starting Address Lo
Quantity of Write Hi
Quantity of Write Lo
Byte Count
Write Reg. Value #0 Hi
Write Reg. Value #0 Lo
Write Reg. Value #1 Hi
Write Reg. Value #1 Lo
Example
0x17
0x08
0x00
0x00
0x02
0x08
0x00
0x00
0x02
0x04
0x11
0x22
0x33
0x44
 Response
Field name
Function Code
Byte Count
Write Reg. Value #0 Hi
Write Reg. Value #0 Lo
Write Reg. Value #1 Hi
Write Reg. Value #1 Lo
-
Example
0x17
0x04
0x11
0x22
0x33
0x44
In case of address 0x0800, 0x0801 output register value: 0x0000, 0x0000 changes to 0x1122, 0x3344.
Copyright(C) CREVIS Co.,Ltd
Support +82-31-899-4599
URL : www.crevis.co.kr
45
FnIO MODBUS Adapter NA-9289
8.2.11.
FnIO S-Series
Error Response
In an exception response, the server sets the MSB of the function code to 1. This makes the function code value in
an exception response exactly 80 hexadecimal higher than the value would be for a normal response.
 Exception Response Example
Field name
Function Code
Exception Code
Example
0x81
0x02
 Exception Codes
Exception
Code
01
Name
Description
Illegal Function
The function code received in the query is not an allowable action
for the server (or slave).
The data address received in the query is not an allowable address
for the server (or slave).
A value contained in the query data field is not an allowable value
for server (or slave).
An unrecoverable error occurred while the server (or slave) was
attempting to perform the requested action.
The server (or slave) has accepted the request and is processing it,
but a long duration of time will be required to do so.
Specialized use in conjunction with programming commands.
The server (or slave) is engaged in processing a long–duration
program command. The client (or master) should retransmit the
message later when the server (or slave) is free.
The server (or slave) attempted to read record file, but detected a
parity error in the memory. The client (or master) can retry the
request, but service may be required on the server (or slave)
device.
Specialized use in conjunction with gateways, indicates that the
gateway was unable to allocate an internal communication path
from the input port to the output port for processing the request.
02
Illegal Data Address
03
Illegal Data Value
04
Slave Device Failure
05
Acknowledge
06
Slave Device Busy
08
Memory Parity Error
0A
Gateway Path Unavailable
-
NA-9289 response exception code 01, 02, 03, 04 and 06.
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46
FnIO MODBUS Adapter NA-9289
8.3.
FnIO S-Series
MODBUS Special Register Map
The special register map can be accessed by function code 3, 4, 6 and 16. Also the special register map must be
accessed by read/write of every each address (one address).
8.3.1. Adapter Identification Special Register (0x1000, 4096)
Address
Access
0x1000(4096)
Read
Type,
Size
1 word
0x1001(4097)
Read
0x1002(4098)
Description
Vendor ID
= 0x02E5 (741), Crevis. Co., Ltd.
1 word
Device type
= 0x000C, Network Adapter
Read
1 word
Product Code = 0x8040
0x1003(4099)
Read
1 word
Firmware revision, if 0x0101, revision 1.01
0x1004(4100)
Read
2 words
Product unique serial number
0x1005(4101)
Read
String
upto
34bytes
Product name string
First 1word is length of valid character string
Example) response as following
“00 20 4E 41 2D 39 32 38 39 2C 4D 6F 64 62 75 73 2F 54 43 50 20 41
64 61 70 74 65 72 2C 46 6E 42 75 73”
Valid character size = 0x0020 =32 characters
“NA-9289,Modbus/TCP Adapter,FnBus”
0x1006(4102)
Read
1 word
Sum check of EEPROM
0x1010(4112)
Read
2 words
Firmware release date
0x1011(4113)
Read
Product manufacturing inspection date
0x1012(4114)
Read
2 words
String
upto
34bytes
0x101E(4126)
-
Read
15 words
Vendor name string
First 1word is length of valid character string.
Composite Id of following address
0x1050(4176),0x1051(4177),0x1052(4178),0x1053(4179),
0x1000(4096),0x1001(4097),0x1002(4098),0x1003(4099),0x1004(4100)
String Type consists of valid string length (first 1word) and array of characters.
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47
FnIO MODBUS Adapter NA-9289
FnIO S-Series
8.3.2. Adapter Watchdog Time, other Time Special Register (0x1020, 4128)
A watchdog timer can be configured for timeout periods up to 65535(1unit=100msec). The Watchdog timer will
timeout (timer decreased, reached 0) if MODBUS operation to the slave node does not occur over the configured
watchdog value, then the slave adapter forces that slot output value is automatically set to user-configured fault
actions and values.
Address
Access
Type, Size
0x1020(4128)
Read/Write
1 word
0x1021(4129)
Read
1 word
0x1022(4130)
Read
1 word
0x1023(4131)
Read/Write
1 word
0x1028(4136)
Read
2 words
Copyright(C) CREVIS Co.,Ltd
Description
Watchdog time value 16bit unsigned.
The time value is represented by multiples of 100msec.
The default value is 0 (watchdog timeout disabled).
A changing of watchdog time value resets watchdog error.
Watchdog time remain value
This value decreases every 100msec
Watchdog error counter, it is cleared by writing address
0x1020
Enable/disable auto recovery Watchdog error when receiving
new frame.
0: Disable,
1: Enable (default).
Its value is stored in EEPROM.
IO update time, main loop time. (100usec unit)
Support +82-31-899-4599
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48
FnIO MODBUS Adapter NA-9289
FnIO S-Series
8.3.3. Adapter TCP/IP Special Register (0x1040, 4160)
Address
Access
Type, Size
0x1040(4160)
Read
1 word
0x1041(4161)
Read/Write
1 word
0x1042(4162)
Read
1 word
Description
MODBUS/TCP statistics. Same as input process image’s status
(1word).
Hi byte is MODBUS status, low byte is FnBus status. Refer to
5.3.1.
MODBUS/TCP connection timeout time. (0.5sec unit)
Maximum time of MODBUS connection to stay to be opened
without receiving a MODBUS request. 0~3600
The 120 (60sec) is default value.
The value 0 disables connection time out specially.
Reserved. number of MODBUS/TCP connected
0x1043(4163)
Read
1 word
MODBUS/TCP port, fixed 502
0x1044(4164)
Read
1 word
Ethernet Interface Speed, 10(10Mbps) or 100(100Mbps)
0x1045(4165)
Read/Write
1 word
IP Setting Method, 0:BOOTP, 1:DHCP (Default : 0)
0x1046(4166)
---
---
0x1047(4167)
Read
1 word
0x1048(4168)
Read
1 word
0x1050(4176)
Read/Write
2 words
0x1051(4177)
Read/Write
2 words
Subnet mask. If 255.255.255.0, then 0xFFFF, 0x00FF.
0x1052(4178)
Read/Write
2 words
Gateway. If 192.168.123.254, then 0xA8C0, 0xFE7B.
Status of DIP SW#9 DHCP/BOOTP(Enable/Disable).
0 : OFF, 1 : ON
Enable/disable Lowest IP address via DIP Switch, 1:Enabled
IP address. If 192.168.100.32, then 0xA8C0, 0x2064.
After update this value, IP address, Subnet mask and Gateway
are applied as new one.
Ethernet physical address (MAC-ID).
If 11-22-33-44-55-66, then 0x2211, 0x4433, 0x6655.
* Power off and then power on, this value is applied.
0x1053(4179)
Read
Copyright(C) CREVIS Co.,Ltd
3 words
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URL : www.crevis.co.kr
49
FnIO MODBUS Adapter NA-9289
FnIO S-Series
8.3.4. Adapter Information Special Register (0x1100, 4352)
Address
Access
Type, Size
Description
0x1100(4352)
Reserved
0x1101(4353)
Reserved
0x1102(4354)
Read
1 word
Start address of input image word register.
0x1103(4355)
Read
1 word
Start address of output image word register. =0x0800
Read
1 word
Size of input image word register.
Read
1 word
Size of output image word register.
Read
1 word
Start address of input image bit. = 0x0000
Read
1 word
Start address of output image bit. =0x1000
0x1108(4360)
Read
1 word
Size of input image bit.
0x1109(4361)
Read
1 word
Size of output image bit.
0x110D(4365)
Read
0x110E(4366)
Read
1 word
Upto
33 words
Field Power & Current Dip Switch State
Expansion slot’s ST-number including NA.
First 1word is adapter’s number, if NA-9289, then 0x9289
0x1110(4368)
Read
1 word
Number of expansion slot
0x1111(4369)
Read
1 word
Number of active slot
0x1112(4370)
Read
1 word
Number of inactive slot
Read
upto
33 words
Expansion slot Module Id. Refer to Appendix A.1 Product List.
First 1word is adapter’s module id.
Input process image mode. The default value is 2.
Valid value range is from 0 to 3.
Output process image mode. The default value is 0.
Valid value range is from 0 to 1.
Inactive slot list, The corresponding bit represents slot position.
0: Active slot,
1: Inactive slot.
Ex) if value is 0x0001, 0x8000, then slot#1,#32 are inactive slots
Live slot list. , The corresponding bit represents slot position.
1: live slot,
0: not live slot
Alarm slot list.
The corresponding bit represents slot position.
1:Alarm slot, 0:Normal slot
Hi byte is MODBUS status, low byte is FnBus status.
It is identical with address 0x1040.
0x1104(4356)
0x1105(4357)
0x1106(4358)
0x1107(4359)
0x1113(4371)
0x1114(4372)*
Read/Write
0x1115(4373)*
Read/Write
0x1116(4374)**
Read/Write
1 word
1 word
2 words
=0x0000
Read
2 words
Read
2 words
Read
1 word
Write
1 word
Reserved. Adapter Scan command.
0x111B(4379)
Read/Write
1 word
Reserved. IO State machine.
0x111C(4380)
Read
2 words
Reserved. Runtime fault code.
0x111D(4381)
Read
1 word
Adapter FnBus Revision. If 0x013C, FnBus Revision is 1.60
0x111E(4382)
Read
1 word
Reserved. Adapter IO identification vendor code.
0x111F(4383)
Read
5 words
LED Display Value and Status Code
0x1117(4375)
0x1118(4376)
0x1119(4377)
0x111A(4378)
*, ** After the system is reset, the new “Set Value” action is applied.
** If the slot location is changed, set default value automatically (all expansion slots are live).
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50
FnIO S-Series
FnIO MODBUS Adapter NA-9289
8.3.5. Expansion Slot Information Special Register (0x2000, 8192)
Each expansion slot has 0x20(32) address offset and same information structure.
Slot#1
Slot#2
Slot#3
Slot#4
Slot#5
Slot#6
Slot#7
Slot#8
Slot#9
Slot#10
Slot#11
Slot#12
Slot#13
Slot#14
Slot#15
Slot#16
0x2000(8192) ~0x201F (8223)
0x2020(8224) ~0x203F (8255)
0x2040(8256) ~0x205F (8287)
0x2060(8288) ~0x207F (8319)
0x2080(8320) ~0x209F (8351)
0x20A0 (8352) ~0x20BF (8383)
0x20C0 (8384) ~0x20DF (8415)
0x20E0 (8416) ~0x20FF (8447)
0x2100(8448) ~0x211F (8479)
0x2120(8480) ~0x213F (8511)
0x2140(8512) ~0x215F (8543)
0x2160(8544) ~0x217F (8575)
0x2180(8576) ~0x219F (8607)
0x21A0 (8608) ~0x21BF (8639)
0x21C0 (8640) ~0x21DF (8671)
0x21E0 (8672) ~0x21FF (8703)
Slot#17
Slot#18
Slot#19
Slot#20
Slot#21
Slot#22
Slot#23
Slot#24
Slot#25
Slot#26
Slot#27
Slot#29
…
Slot#61
Slot#62
Slot#63
0x2200(8704) ~0x221F (8735)
0x2220(8736) ~0x223F (8767)
0x2240(8768) ~0x225F (8799)
0x2260(8800) ~0x227F (8831)
0x2280(8832) ~0x229F (8863)
0x22A0 (8864) ~0x22BF (8895)
0x22C0 (8896) ~0x22DF (8927)
0x22E0 (8928) ~0x22FF (8959)
0x2300(8960) ~0x231F (8991)
0x2320(8992) ~0x233F (9023)
0x2340(9024) ~0x235F (9055)
0x2360(9056) ~0x237F (9087)
…
0x2780(10112)~0x279F(10143)
0x27A0(10144)~0x27BF(10175)
0x27C0(10176)~0x27DF(10207)
Address
Offset
Expansion
Slot#1
Expansion
Slot#2
Expansion
Slot#3
……
Expansion
Slot#62
Expansion
Slot#63
+ 0x00(+0)
+ 0x01(+1)
+ 0x02(+2)
+ 0x03(+3)
+ 0x04(+4)
+ 0x05(+5)
+ 0x06(+6)
+ 0x07(+7)
+ 0x08(+8)
+ 0x09(+9)
+ 0x0A(+10)
+ 0x0B(+11)
+ 0x0C(+12)
+ 0x0D(+13)
+ 0x0E(+14)
+ 0x0F(+15)
+ 0x10(+16)
+ 0x11(+17)
+ 0x12(+18)
+ 0x13(+19)
+ 0x14(+20)
+ 0x15(+21)
+ 0x16(+22)
+ 0x17(+23)
+ 0x18(+24)
+ 0x19(+25)
+ 0x1A(+26)
+ 0x1B(+27)
+ 0x1C(+28)
0x2000(8192)
0x2001(8193)
0x2002(8194)
0x2003(8195)
0x2004(8196)
0x2005(8197)
0x2006(8198)
0x2007(8199)
0x2008(8200)
0x2009(8201)
0x200A(8202)
0x200B(8203)
0x200C(8204)
0x200D(8205)
0x200E(8206)
0x200F(8207)
0x2010(8208)
0x2011(8209)
0x2012(8210)
0x2013(8211)
0x2014(8212)
0x2015(8213)
0x2016(8214)
0x2017(8215)
0x2018(8216)
0x2019(8217)
0x201A(8218)
0x201B(8219)
0x201C(8220)
0x2020(8224)
0x2021(8225)
0x2022(8226)
0x2023(8227)
0x2024(8228)
0x2025(8229)
0x2026(8230)
0x2027(8231)
0x2028(8232)
0x2029(8233)
0x202A(8234)
0x202B(8235)
0x202C(8236)
0x202D(8237)
0x202E(8238)
0x202F(8239)
0x2030(8240)
0x2031(8241)
0x2032(8242)
0x2033(8243)
0x2034(8244)
0x2035(8245)
0x2036(8246)
0x2037(8247)
0x2038(8248)
0x2039(8249)
0x203A(8250)
0x203B(8251)
0x203C(8252)
0x2040(8256)
0x2041(8257)
0x2042(8258)
0x2043(8259)
0x2044(8260)
0x2045(8261)
0x2046(8262)
0x2047(8263)
0x2048(8264)
0x2049(8265)
0x204A(8266)
0x204B(8267)
0x204C(8268)
0x204D(8269)
0x204E(8270)
0x204F(8271)
0x2050(8272)
0x2051(8273)
0x2052(8274)
0x2053(8275)
0x2054(8276)
0x2055(8277)
0x2056(8278)
0x2057(8279)
0x2058(8280)
0x2059(8281)
0x205A(8282)
0x205B(8283)
0x205C(8284)
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
……
0x27C0(10176)
0x27C1(10177)
0x27C2(10178)
0x27C3(10179)
0x27C4(10180)
0x27C5(10181)
0x27C6(10182)
0x27C7(10183)
0x27C8(10184)
0x27C9(10185)
0x27CA(10186)
0x27CB(10187)
0x27CC(10188)
0x27CD(10189)
0x27CE(10190)
0x27CF(10191)
0x27D0(10192)
0x27D1(10193)
0x27D2(10194)
0x27D3(10195)
0x27D4(10196)
0x27D5(10197)
0x27D6(10198)
0x27D7(10199)
0x27D8(10200)
0x27D9(10201)
0x27DA(10202)
0x27DB(10203)
0x27DC(10204)
0x27E0(10208)
0x27E1(10209)
0x27E2(10210)
0x27E3(10211)
0x27E4(10212)
0x27E5(10213)
0x27E6(10214)
0x27E7(10215)
0x27E8(10216)
0x27E9(10217)
0x27EA(10218)
0x27EB(10219)
0x27EC(10220)
0x27ED(10221)
0x27EE(10222)
0x27EF(10223)
0x27F0(10224)
0x27F1(10225)
0x27F2(10226)
0x27F3(10227)
0x27F4(10228)
0x27F5(10229)
0x27F6(10230)
0x27F7(10231)
0x27F8(10232)
0x27F9(10233)
0x27FA(10234)
0x27FB(10235)
0x27FC(10236)
Copyright(C) CREVIS Co.,Ltd
Support +82-31-899-4599
URL : www.crevis.co.kr
51
FnIO S-Series
FnIO MODBUS Adapter NA-9289
+ 0x1D(+29)
+ 0x1E(+30)
+ 0x1F(+31)
0x201D(8221)
0x201E(8222)
0x201F(8223)
0x203D(8253)
0x203E(8254)
0x203F(8255)
0x205D(8285)
0x205E(8286)
0x205F(8287)
……
……
……
0x27DD(10205)
0x27DE(10206)
0x27DF(10207)
0x27FD(10237)
0x27FE(10238)
0x27FF(10239)
Address
Access
Type, Size
Description
+ 0x00(+0)
Read
1 word
Slot module id.
+ 0x01(+1)
Read
1 word
Expansion Slot IO code. Refer to Table IO Data Code Format.
+ 0x02(+2)**
Read
1 word
Input start register address of input image word this slot.
+ 0x03(+3)**
Read
1 word
Input word’s bit offset of input image word this slot.
+ 0x04(+4)**
Read
1 word
Output start register address of output image word this slot.
+ 0x05(+5)**
Read
1 word
Output word’s bit offset of output image word this slot.
+ 0x06(+6)**
Read
1 word
Input bit start address of input image bit this slot.
+ 0x07(+7)**
Read
1 word
Output bit start address of output image bit this slot.
+ 0x08(+8)**
Read
1 word
Size of input bit this slot
+ 0x09(+9)**
Read
1 word
Size of output bit this slot
+ 0x0A(+10)**
Read
n words
Read input data this slot
+ 0x0B(+11)**
Read/Write
n words
Read/write output data this slot
+ 0x0C(+12)*
Read/Write
1 word
Inactive slot, 0x0000:active, 0x0001:inactive
+ 0x0E(+14)
Read
1 word
ST-number, if ST-1324, returns 0x1324
+ 0x0F(+15)
Read
String upto
74 bytes
+ 0x10(+16)
Read
1 word
First 1word is length of valid character string.
If ST-1324, returns
“00 21 53 54 2D 31 33 32 34 2C 20 46 6E 49 4F 20 34 20 53 6F 75 72
63 69 6E 67 20 49 6E 20 34 38 56 64 63 00”
Valid character size = 0x0021 =33 characters,
“ST-1324, FnIO 4 Sourcing In 48Vdc”
Size of configuration parameter byte
+ 0x11(+17)**
Read/Write
n words
Read/write Configuration parameter data, up to 8byte.
+ 0x12(+18)
Read
1 word
Size of memory byte.
+ 0x13(+19)**
Read/Write
n words
Read/write Memory data. Offset of memory is fixed with 0.
+ 0x14(+20)**
Read/Write
n words
Read/write Memory data. First 2byte of write data is memory offset.
+ 0x15(+21)
Read
2 words
Product code.
+ 0x16(+22)
Read
2 words
Catalog number.
+ 0x17(+23)
Read
1 word
Firmware Revision
+ 0x18(+24)
Read
1 word
FnBus Revision
+ 0x1A(+26)
Read/Write
n words
Reserved. Read/write expansion class access. (vendor only)
+ 0x1B(+27)
Read/Write
n words
Reserved. Read/write maintenance data access. (vendor only)
* After the system is reset, the new “Set Value” action is applied.
** Nothing of output, input, and memory or configuration parameter corresponding slot returns Exception 02.
*** Slot Configuration parameter saved by internal EEPROM during power cycle until slot position changed.
*** All of output modules and special modules have the slot configuration parameter data. Refer to Document.
(FnIO_Configuration_Parameter_Memory_Register)
Copyright(C) CREVIS Co.,Ltd
Support +82-31-899-4599
URL : www.crevis.co.kr
52
FnIO S-Series
FnIO MODBUS Adapter NA-9289
 IO Data Code Format (1 word)
Item
Field
Field
#15 #14 #13 #12 #11
Output IO code
Date Type Data Length
Example)
ST-3214
ST-1224
ST-1228
ST-4123
ST-221F
ST-2324
0
0
0
1
0
1
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
#10
#9
#8
0
0
0
0
0
1
0
0
0
1
0
0
0
0
0
0
1
0
#7
#6
#5
#4
#3
Input IO code
Date Type Data Length
1
1
0
0
0
1
0
1
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
Input/output Data Type:
0 0: No I/O Data
0 1: Byte Data
1 0: Word Data
1 1: Bit Data
Input/output Data Length:
0 0 0 0 0 0 0: 0 Bit/Byte/Word
0 0 0 0 0 0 1: 1 Bit/Byte/Word
0 0 0 0 0 1 0: 2 Bit/Byte/Word
0 0 0 0 0 1 1: 3 Bit/Byte/Word
……
1 1 1 1 1 1 1: 63 Bit/Byte/Word
8.4.
MODBUS Reference
MODBUS Reference Documents
http://www.modbus.org
MODBUS Tools
http://www.modbustools.com , MODBUS poll
http://www.win-tech.com , MODSCAN32
Copyright(C) CREVIS Co.,Ltd
Support +82-31-899-4599
URL : www.crevis.co.kr
0
0
0
0
0
0
#2
#1
#0
Word
1
1
0
0
0
1
0
0
0
0
0
0
0
0
1
0
0
0
0x0084
0x00C4
0x0041
0x8200
0x4200
0xC4C4
53
FnIO S-Series
FnIO MODBUS Adapter NA-9289
9. Trouble Shooting
9.1.
How to diagnose by LED indicator
LED Status
All LED turns off
MOD LED flashes green
MOD LED flashes red
MOD LED is red
I/O LED turns off
Cause
- No power
- System power is not supplied.
- Failure of initialization EEPROM
parameter.
- Excess of expansion slot
- Excess of IO size
- Wrong IO composition
- Occurrence of EEPROM checksum
error
- Wrong address ID
- Occurrence critical error in firmware
- Failure of realization expansion Module
- None expansion Module
Failure of configuration baud rate
I/O LED flashes red
Failure of initialization I/O
I/O LED is red
Failure of exchanging I/O data
NET LED turns off
Failure of communication with Master
NET LED flashed green
Failure of exchanging data with master
NET LED is red
Communication connecting lost
Action
- Check main power Cable
- Contact Sales team and send module
for repair.
- Contact Sales team and send module
for repair.
- Use expansion slot up to 32.
- Compose that IO total size is not
excess.
- Check composition I/O Module
- Contact Sales team and send module
for repair.
- Check connector status both NA
series and expansion module.
- Check communication cable with
Master
- Check power for master.
- Use expansion slot up to 32.
- Compose that IO total size is not
excess.
NA series notice unidentified
expansion module ID. Check status of
expansion module.
Check status of expansion IO
connection.
Check main power for master and
communication cable.
Check status in software for Master
configuration.
Check BUS line cable for connection
with master.
Check duplication address.
Copyright(C) CREVIS Co.,Ltd
Support +82-31-899-4599
URL : www.crevis.co.kr
54
FnIO MODBUS Adapter NA-9289
9.2.
FnIO S-Series
How to diagnose when device couldn’t communicate network
Inspection of wrong or omission cable connection.
- Check status of cable connection for each node.
- Check that all color matches between connector and cable.
- Check wire omission.
Terminator resistor
- If terminator resistor is not installed, install terminator resistor
- Check location of terminator resistor
Configuration of Node address
- Check duplication node address.
Configuration of Master
- Check configuration of master
- Check whether to do download or don’t
- Check composition is right
Configuration of communication baud rate
I/O size
Configuration of each node
Ground and environment
- Check ground is contacted
- Check environment factor (temperature, humidity, etc) is in less than regular limit
Copyright(C) CREVIS Co.,Ltd
Support +82-31-899-4599
URL : www.crevis.co.kr
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