gefran GFX4-ETH1 User manual

180409D_MSW_GFX4-ETH1_04-2013_ENG
GFX4-ETH1
INDEX
1Introduction 2
2Configuration 2
System Overview 3
Mapping Function EthernetIP to ModbusRTU 4
Setting the IP ADDRESS 6
Setting the DEFAULT IP ADDRESS 7
Meaning of LEDs 8
Sending CIP messages 9
Message configuration for CIPMsgSRV4D_FC04 13
Message configuration for CIPMsgSRV50_FC16 14
INSTALLATION AND
OPERATION MANUAL
Software Version: 1.1
Code: 80409D /Edition 05 - 04-2013 ENG

280409D_MSW_GFX4-ETH1_04-2013_ENG
2 • Configuration
The Firmware for the GFX4-ETH1 (EthernetIP-RTUMaster) does not need any configuration to operate.
All necessary settings are fix and predefined. After power up the GFX4-ETH1 sends DHCP requests to obtain an IP
address.
Therfore a running DHCP server is required. .
TCP/IP:
• DHCPdisable
• Baudrates10and100MBit/s
• DatatransportlayerEthernetII,IEEE802.3
• defaultIP192.168.1.100,NM255.255.255.0,gw0.0.0.0
• CH0andCH1conswitchintegrato
MODBUS RTU
• Baudrate=19200
• Parity=NONE
• StopBits=1
• DataBits=8
System Requirements
• EthernetIPMaster/Scanner
• GFX4-ETH1withEthernetIpboard
• DHCPserver(optional)
1 • Introduction
This Manual describes the mapping functionality of the GFX4-ETH1 EthernetIP Adapter to ModbusRTU Master via
acyclic CIP messages.
This functionality is realized in a separate Firmware/Hardware connected to the standard Gefran GFX4 controller.
For all general GFX4 functionalality refer to manuals availables for download at Gefran web site www.gefran.com
Referenced Documentations
Thefollowingdocumentationoverviewgivesinformation,forwhichitemsyoucanfindfurtherinformationinwhich
manual.
Manual Contents Document name
 Vol7_1.0.pdf IntegrationofModbusDevicesinto THECIPNETWORKSLIBRARY
the CIP Architecture Vol. 7 Edition 1.0

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System Overview
The “GFX4 EthernetIP ” (GFX4-ETH1) is a Gateway between the EthernetIP Protocoll and the serial protocol Modbus
RTU.
On one side the GFX4-ETH1 is a EthernetIP Slave on the other side it is a Modbus RTU Master with the aim to con-
nect Modbus RTU Slaves to the EthernetIP protocol.
Figure 1: GFX4-ETH1 network overview
PLC
EthernetIP Master/Scanner
GFX4
ModbusRTU Slave
GFX4
ModbusRTU Slave
GFX4 - EIP
ModbusRTU Master
Ethernet IP
. . . . . . . . .
Ethernet TCP/IP

480409D_MSW_GFX4-ETH1_04-2013_ENG
Mapping Function EthernetIP to ModbusRTU
The Gateway functionality follows the specification for “Integration of Modbus Devices into the CIPArchitecture” which
canbefoundinthe“THECIPNETWORKSLIBRARYVolume7”.
Follwing this specification the GFX4-ETH1 Firmware contains the “CIP Modbus Object” (Class Code 44hex).
This object is responsible for receiving acyclic Class services from the EthernetIP protocol and convert them into
ModbusRTU requests and returning the correspong confirmation.
PLC
EthernetIP Master/Scanner
GFX4
ModbusRTU Slave
CIP Object 44hex
Modbus: FC3, 16 etc. Req./Cnf
EthernetIP: Object Service 4B, 4C
Figure 2: GFX4-ETH1 overview
Ethernet TCP/IP
GFX4 - EIP
RS485

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According the Modbus Object Services following functions are supported. Each Modbus command is represented by
a CIP service code of the Modbus Object (0x44).
The list of predefined functions from the specification and the supported services by the GFX4-ETH1 are defined in
the tables below.
List of Modbus Object Services
List of supported Modbus Object Services
CIP Corresponding Modbus Supported Remark
Service Function code
 0x4B FC2 Yes FC1and2aresynonymous
 0x4C FC1 Yes
 0x4D FC4 Yes FC3and4aresynonymous
 0x4E FC3 Yes
 0x4F FC15 Yes
 0x50 FC16 Yes
 0x51 FCXX No
Service Need in Implem Service Name Description
code Class Instance of service
 0x4B N/A Required ReadDiscreteInputs Readsoneormorecontiguous
discrete input(s)
 0x4C N/A Required ReadCoils Readsoneormorecontiguouscoil(s)
 0x4D N/A Required ReadInputRegisters Readsoneormorecontiguousinput
register(s)
 0x4E N/A Required ReadHoldingRegisters Readsoneormorecontiguous
holding register(s)
 0x4F N/A Required WriteCoils Writeoneormorecontiguouscoil(s)
 0x50 N/A Required WriteHoldingRegisters Writeoneormorecontiguousholding
register(s)
 0x51 N/A Required ModbusPassthrough Providesencapsulationofanypublic
or private Modbus function

680409D_MSW_GFX4-ETH1_04-2013_ENG
Youcanchangethedevice’sIPaddressbyusingtheGefranSetIPToolsutility.
Toinstallthetool,launchtheexecutableandfollowtheinstructions.
Youcanset:
- IP address
 - NetMask
- Gateway address
 - DHCPorBOOTPfunctionalities
Note:itisessentialthattheutilityNOTbeblockedbytheFirewallandthatUDPbroadcasttrafficbeallowedinthe
network.
Wheninstallationisdone,youcanlaunchtheprogrambyclickingthedesktopicon.
The following screen is shown:
Note:ifyoudonotknowordonotwanttosettheGatewayaddress,settheIPandGatewaythesame.
SETTING THE IP ADDRESS
Step 1: click the Refresh list button Step 2: the List of devices found (MAC) : ) window
shows the Mac addresses of the devices connected to
the network
Step 3: click on the Mac address found to display the
values currently set on the device
Step 4:set the appropriate values for your network and
click the Apply changes button

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YoucansetthedefaultIPaddresswhenevernecessary.
This is done as follows:
- Switch off the device
-Unscrewscrew1,gentlypryatpoints2andremovecover3
-Settherotaryswitchesaddrx100=9,addrx10=1,addrx1=9
- Switch the device on and wait about 30 seconds
- Switch the device off again
- Change the rotary switches by setting a value other than 919
- Put the cover back on
- Switch the device on with the new values:
 Ip=192.168.1.100
 Nm=255.255.255.0
 Gw=0.0.0.0
SETTING THE DEFAULT IP ADDRESS

880409D_MSW_GFX4-ETH1_04-2013_ENG
The device has LEDs that indicate the state of the module and of the network connections.
BEHAVIOR OF LEDS AT POWER-ON
Time MS Green MS Red NS Green NS Red
t=0ms Off Off Off Off
t=250ms On Off Off Off
t=500ms Off On Off Off
t=750ms Off Off On Off
t=1000ms Off Off Off On
t=1250ms Off Off Off Off
The following table shows the behavior of the green and red MS (module state) LEDs:
MEANING OF MS (MODULE STATE) LEDS
Stato MS Green MS Red Notes
No-power Off Off
Device Standby On/Off Off GreenLEDashes500msOn/Off
Device Operational On Off GreenLEDsteadyON
Minor Fault Off On/Off RedLEDashes500msOn/Off
Major Fault Off On RedLEDsteadyON
Duplicate IP address Off On/Off RedLEDashes500msOn/Off
ThefollowingtableshowsthebehaviorofthegreenandredNS(networkstate)LEDs:
SIGNIFICATO LED NS (NETWORK STATE)
Stato NS Green NS Red Notes
No-poweroNessunIP Off Off
NoConnection On/Off Off GreenLEDashes500msOn/Off
Device Connesso On Off GreenLEDsteadyON
Connection time-out Off On/Off RedLEDashes500msOn/Off
Duplicate IP Off On RedLEDsteadyON
MEANING OF THE LEDS
MS=ModuleStateIndicator NS=NetworkStateIndicator

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The following pictures demonstrate how to send ModbusRTU requests via EthernetIP using CIP messages.
The screenshot only demonstrate how to setup the CIP message parameter correctly.
Finaly it depends on the used EthernetIP scanner (PLC etc.) how to formulate and send CIP requests.
Example: write multiple register
Example CIP to function code 16
Parameter Value Description
Send to 192.168.30.30 GFX4-ETH1 address
Service 0x50 CIP service for Modbus FC 16
Class 0x44 The Modbus Object number
Request Data 00 00
02 00
aa bb cc dd ee
Register Address
Quantity of registers
Data to write
Instance 1-n Modbus RTU Slave address
Attribute,Member 0
SENDIG CIP MESSAGES

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Example CIP to function code 3/4
Parameter Value Description
Send to 192.168.30.30 GFX4-ETH1 address
Service 0x4d CIP Service for modbus FC 4
Class 0x44 The Modbus Object number
Request Data 00 00
00 04
Register Address
Quantity of registers to read
Instance 1-n Modbus RTU Slave address
Attribute,Member 0Unused,mustbe0
Response data AABBCCDD00000000 Register values
Example FC4/FC3 Read Input/Holding Register

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The Gfx4Test is an read/write data example with RSLogix 5000 enviroment.
Module I/O configuration
Ex: GFX4-ETH1 TEST

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This is an example of main program

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In this example we want to read one register at adrress 402
Register read value is stored in FC04CnfData
Controller tag name Value Remark
FC04_ReqData[0] 402 Address of GFX4
Controller parameter HI.S
FC04_ReqData[1] 1 Quantity
FC04_ReqData[2] Value Data
MESSAGE CONFIGURATION FOR CIPMsgSRV4D_FC04

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In this example we want to write one register at adrress 402 with value in Fc16_ReqData
Controller tag name Value Remark
FC16_ReqData[0] 402 Address of GFX4
Controller parameter HI.S
FC16_ReqData[1] 1 Quantity
FC16_ReqData[2] Value Data
MESSAGE CONFIGURATION FOR CIPMsgSRV50_FC16