User Manual Protocol Converter
Contents
1. fj FUTUREDESIGN T R Q User Manual Protocol Converter PC E Serial to Ethernet RS232 485 Modbus RTU to Modbus TCP IP FDC_PC E_Manual_V1 0_August 2007 1 of 19 COPYRIGHT NOTICE This manualis a_ publication of Future Design Cont rols Inc and is provided for use by its customers only The conte nts of the manual are copyrighted b y Future Design Controls reproduction in whole orin part for use other tha nin support of Futur e Design Controls equipment is prohibited without the specific written permission from Future Design Controls ASSISTANCE This manual is designed to provide the necessary information for trouble free installation and operation of your new IO Series MANUAL REVISION If you contact us in reference to this manual please include the following Document number FDC_PC E_Manual_v1 0_August 2007 Name User Manual for Protocol Converter Serial to Ethernet FDC_PC E_Manual_V1 0_August 2007 2 of 19 Warranty Future Design Controls products described in this manual are warranted to be free from functional defects in materials and workmanship at the time the products leave Future Design Controls facilities and to conform at that time to the specifications set forth in the relevant Future Design Controls manual sheet or sheets for a period of 12 months after delivery to the first purchaser for use There are no expressed or implied Warranties extending beyond the Warranties herein and above set forth2. Limitations Future Design Controls provides no warranty or representations of any sort regarding the fitness of use or application of its products by the purchaser Users are responsible for the selection suitability of the products for their application or use of Future Design Controls products Future Design Controls shall not be liable for any damages or losses whether direct indirect incidental special consequential or any other damages costs or expenses excepting only the cost or expense of repair or replacement of Future Design Control products as described below Future Design Controls sole responsibility under the warranty at Future Design Controls option is limited to replacement or repair free of charge or refund of purchase price within the warranty period specified This warranty does not apply to damage resulting from transportation alteration misuse or abuse Future Design Controls reserves the right to make changes without notification to purchaser to materials or processing that do not affect compliance with any applicable specifications Return Material Authorization Contact Future Design Controls for Return Material Authorization Number prior to returning any product to our facility FDC_PC E_Manual_V1 0_August 2007 3 of 19 TABLE OF CONTENTS 1 D SS CULO OM Nonan sare tee ees a r iat ctemesencaeetedoanie 5 ZOD eraung IWWIOGS Six taesi iets 2a se eu eadeniel Searadtal release ese fe ates ie a attend ohana icte
3. Safety IEC 950 EMC IEC 61000 4 2 Al Level 2 IEC 61000 4 3 Al Level 2 IEC 61000 4 4 Level 3 CISPR 11 1991 Al EN 55011 1998 Group 1 Class A Bridgeview Il May 2007 Mr Al Orsino Location Date Technical Support Manager FDC _PC E_Manual_ V1 0 August 2007 19 of 19
4. Server IP e Converter Mode These modes have been described in detail in a section 2 Enter 0 1 or 2 as required For simple applications say Data Acquisition software in PC is Master and IO modules are RTU slaves then select 1 e Char Timeout This timeout has been described in detail in a section 2 Enter a value in 10millisecond increments Port Number The Port number used to tell the converter that the in coming TCP UDP message must get sent to the serial port Server IP The client converter in mode 2 must connect to the server converter Enter the IP address of the server converter in this field FDC_PC E_Manual_V1 0_August 2007 17 of 19 gt IP Address Windows Internet Explorer er oe http 192 168 0 112 p htm w i Fe Ox w we GP Address w B m e ilk Pe R5234 R5455 Communications Port Parameters R5485 On Delay X 1 milliseconds A 1 milliseconds Baud Rate Data Bits Parity 0 None 1 Even 2 Odd Stop Bits sass 0 RS232 1 RS485 Serial Reply B X 10 milliseconds R5485 OF Delay Module Name PCE e Baud Rate Data Bits Parity and Stop Bits The configuration of the serial port can be configured by selecting the parameters from the pull down menu Click on the Submit button to load these values into the Protocol converter e RS 232 RS485 This field is used to select RS232 or RS485 on the serial port e Serial Reply Timeout This timeout is the time the mo
5. Save your settings by pressing OK in both TCP IP properties and Network properties Reboot your PC 6 5 Connecting to a PC which is connected to a Network If there is an Ethernet network available the Protocol converter can be connected to any hub belonging to the network Please note that PC E is shipped with default IP address of 192 168 0 112 To connect PC E with existing network first IP address of PC E should be changed to free IP address available in the network 1 2 3 E Contact system administrator and request for free IP address in the network Remove LAN cable Change IP address to the PC as follows IP address 192 168 0 113 Subnet mask 255 255 255 0 Default Gateway 192 168 0 1 Enable the network connection Connect cross over Ethernet cable between PC and PC E Apply Power to PC E Observe that Ethernet link LED Green color is steady on continuously Right side LED shows link activity and you can observe slow flash FDC_PC E_Manual_V1 0_August 2007 12 of 19 6 6 Testing the Connection To test the connection between the PC and the Protocol converter a simple program called ping can be used Ping sends a number of messages to the specified IP address and displays the response The ping program can be run from the command line or from a DOS prompt on the PC as follows e Open the Windows Start Menu e Click Run e Inthe Open box type ping 192 168 0 112 If the network connection is OK between PC and P
6. The Protocol converter respond to converter is shipped with a default IP address of PING requests 192 168 0 112 the PC can be setup with an IP address of 192 168 0 113 The PC and Protocol converter are setup with a Yes correct IP address and they are able to communicate with each other This is normally caused by the setup of the Web browser Can the default Web page No Inthe options or preferences menu check that be accessed in a Web the Web browser is configured for direct network browser connection or local area network and NOT using a proxy server ACTIVITY LED flashing before switching on the power for next time Procedure to set PC E to default IP address a Remove power b Remove Default IP jumper c Plug in Ethernet cable and connect to switch d Apply power e After about 2 seconds the link LED should come on and must not flash LED closest to green connector f Replace jumper FDC_PC E_Manual_ V1 0 August 2007 15 of 19 6 9 Paramete r Configuration The Web page address 192 168 0 112 ip htm is entered into the address line of the browser to access the configuration page This page allows you to change the IP address of the Protocol converter select serial timeout to setup the baud rate of the Protocol converter on the RS485 network and to enter a Module Description Name for identification maintenance purposes OP Address Windows Internet Explorer E Se Ce 2 htp 2 168 0 112p bm
7. incense eienre tee 5 ZANE SOCIO tee eta la Ae bat hs San Asean dB flat detects eta ade etch aes eda dc le tate la ataa intl 5 2 1 1 MOdbUS Gateway USING TOP cenia E E E 6 2 1 2 Transparent Mode Using TCP indie ei eee i ee es 6 2 1 3 Modbus gateway Using UDP ccc ccccceeeee sees seeeeeeeeeeseeesaaeeeneeeesaneesees 6 2 1 4 Transparent Mode Using UDP cccccccecccceceeceseeceeeeseeeeseseseseesseeeeseeeesees 6 ZW OdG Tenenan N aadeaearo sen osama dual code een cenoh aaa 7 2 2 1 Modbus gateway Using TCP aceedieueacaineteieriicieenuancdaceaatlderaiete 7 2 2 2 Transparent Mode Using TCP cccceccccseeecseeeeseeeeseeeeeeeeeeseuesseeeesaeeeseneesees T 239M GOCE Z mre e a 7 Sl MYSICal DIMENSIONS eaen R tea sadeta hatwneed ATS 8 Os GMOURGI WO SMICIAINGc56iesscsiecncae sient tadcendsianectsae eguedon seca stem IE tee Ea A 8 4 LEER Mical SPECICATION sidsecse add scat a dee arousatd a eae ae anewsdaettee 9 VA are O E a E A 9 6C ONNgUrA lOi R TE E 10 6 1 Pow er Connections i ienen aniei ao a a eia aa aaa 10 6 2 Ethe NET COMME CUO Ni sonsir uena E a R N TaS 10 Oom dication LED Gasna ea E N 10 6 4 Connecting to a PC which is not Connected to a Network ccccccceeeeeeeeeeeeeees 11 6 5 Connecting to a PC which is connected to a Network ccccseccseeeeeeeeseeeeeeeeaees 12 66 Te Sno INE CONMECHOM tics s e A echo rid haunt cd 13 6 7 Viewing Web TR AGS scx sediorccisad c
8. be clipped onto a DIN rail Power for the Protocol converter PC E must be applied to terminal 1 12 24VDC and terminal 2 OV The power LED will illuminate and all LED s will be off 6 2 E thernet Connection Next the Ethernet connection is required either through a network or directly to a PC The Ethernet interface uses a standard RJ45 connector 6 3 Indication LED S The led s on Protocol converter are used to indicate the operation of the module Ethernet Link Fi Established Ethernet Activity _ on Network Receive Serial Communication Transmit Serial Communication Power supply On Modbus TCP Communication Web Server Communication FDC_PC E_Manual_V1 0_August 2007 10 of 19 6 4 Connecting to a PC which is not Connected to a Network If the PC is equipped with an Ethernet card but not connected to a network a local network address should be used for communication between the Converter and the PC The PC E converter is shipped with a default IP address 192 168 0 112 For direct connection between the PC and the Protocol converter a crossover Ethernet cable is required PC STRAIGHT THRU HUB PC Tx R Ti TX 2 T 2 a TX 2 RX 3 CS TX RAS To setup your PC to connect directly to the Protocol converter PC E an IP address in the same range as the Protocol converter must be assigned to the PC In Windows environments this should be done as follows Connect the PC and the Protocol converter to
9. client converter 2 3 Mo de 2 Mode 2 is a Client configuration and is used to make a transparent link with a server converter This mode only makes use of a single socket This single socket implementation waits for messages to come in on the Ethernet network and sends them out the serial port Any messages being received on the serial port are sent out on the Ethernet network As there is only one socket there is no need for the timer as in mode 0 When messages are received on the serial port they are sent out on the Ethernet network Due to the fact that the Ethernet network is normally faster than the serial data being received the serial message being received will get broken up into small blocks and then sent on the Ethernet network This could result in the Ethernet network being flooded with many messages sending one or two characters at a time To prevent this from happening a timer is used This timer starts when the first character is received on the serial port and when it expires any received characters in the serial port buffer are sent out on the Ethernet network This timer is disabled if a value of 0 is programmed The timer is labeled Char Timeout on the ip htm web page The client converter must be configured to use a PORT number chosen by the user This port number must be the same which is programmed into the server converter This Port number informs the converter that any data that is received in a socket must be tran
10. dule waits for a reply from a slave device If a reply is received then this timeout is cancelled and the converter looks for the next TCP message If the slave does not send a reply then this timeout will expire and allow the converter to look for the next TCP message This timeout must be longer than the turn around time of the slave device or it will timeout before the slave replies This timeout only operates in Mode 0 e RS485 on Delay This is the time the RS485 transmitter will be enabled before data is transmitted This has no effect on RS232 communications e RS485 off Delay This is the time the RS485 transmitter will be enabled after data is transmitted This has no effect on RS232 communications e Module Name This field allows you to enter a module description name into the Protocol converter This is an identifier for diagnostic maintenance purposes and is chosen to best describe the Protocol converter in the system by name or number FDC_PC E_Manual_V1 0_August 2007 18 of 19 7 CE Conformity Certificate DECLARATION OF CONFORMITY according to EN 45014 Manufacturer s Name Future Design Controls Inc Manufacturer s Address P O Box 1196 7524 West 98 Place Bridgeview Il 60455 Declares that the product Product Name Protocol Converter Serial to Ethernet Model Number s PC E complies with EMC Directive 89 336 EEC and Low Voltage Equipment Directive 73 23 EEC and conforms to the following Product specifications
11. eir respective Serial Modbus RS485 networks The master device s PC and or PLC s must be configured with the IP address of the PC E Converter s and with the respective Modbus ID of the serial Modbus devices As each Serial Modbus RS485 network is separate PC E converter with unique IP address it is possible to have repeated Modbus ID s on the RS485 networks 2 Ope rating Modes 2 1 Mo de 0 Mode 0 is the standard server configuration for most Ethernet serial converter applications This mode has been designed to service multiple sockets which enables up to 4 masters to communicate with the slaves connected to the converter Each socket is serviced in turn and any message in the socket is sent out on the serial port The converter then starts a timer waiting for a reply When a reply is received the messages is put into the initiating socket and send out on the Ethernet network The converter then checks the next socket If no reply is received then the timer expires and the converter checks the next socket This timer is configured on the ip htm web page and is labeled Serial Reply Timeout The converter can also accept messages on UDP instead of TCP Operation is the same and does not need any special configuration FDC_PC E_Manual_V1 0_August 2007 5 of 19 There are a number of different configurations for this mode Mode 0 as follows 2 1 1 Modbus gateway Using TCP When used as a Modbus gateway the client must be con
12. evices are relays and contactors transformers motor controllers etc This electromagnetic radiation can induce electrical noise into both power and signal lines as well as direct radiation into the module causing negative effects on the system Appropriate grounding shielding and other protective steps should be taken at the installation stage to prevent these effects These protective steps include control cabinet grounding module grounding cable shield grounding protective elements for electromagnetic switching devices correct wiring as well as consideration of cable types and their cross sections 1 Shielded twisted pair cable must be used with the screen grounded at one point only 2 Use should be made of shielded I O T C RTD cable with the screens grounded at one point as close to the Protocol converter as possible FDC_PC E_Manual_V1 0_August 2007 8 of 19 4 Technical Specification Ftemet eg tte ___ tortotase Tx o o ooo o uo Baud Rate 2400 4800 9600 19200 38400 9 600 115200 Data Bits 5 6 7 8 Humidity Cp to 95 non condensing Pd 5 Wiring RS232 RX DATA RS232 TX DATA RS232 GND 6 00 12 24V DC RJ45 LOGIC POWER PC E NBL 5 i 10 100baseTX WwW JN 4 TO RS485 Pee 5 NETWORK COMMS Note Select RS232 or RS485 on the ip htm web page FDC_PC E_Manual_V1 0_August 2007 9 of 19 6 Configuration 6 1 Po wer Connections The Ethernet Serial Protocol converter must
13. figured to use Port 502 This is a reserved port number for Modbus TCP applications and informs the converter that it must implement the protocol conversion from Modbus TCP on the Ethernet network to Modbus RTU on the serial network 2 1 2 Transparent Mode Using TCP When used in transparent mode the client must be configured to use Port 1234 This port number informs the converter that any data that is received in a socket must be transmitted out the serial port without any protocol conversion 2 1 3 Modbus gateway Using UDP When used as a Modbus gateway the client must be configured to use Port 502 This is a reserved port number for Modbus TCP applications and informs the converter that it must implement the protocol conversion from Modbus TCP on the Ethernet network to Modbus RTU on the serial network 2 1 4 Transparent Mode Using UDP When used in transparent mode the client must be configured to use Port 1234 This port number informs the converter that any data that is received in a UDP datagram must be transmitted out the serial port without any protocol conversion Modbus Master 8DI 2 Digital 4 Inputs 1 Ethernet Modbus maa RS232 RS485 Ethernet k Converter Master Hub Switch Request Modbus Slaves RS485 Network lt 120 Ohm Termination Digital Outputs Fig Mode 1 Maximum of 4 masters can access data of the IO modules via PC E That means Mode 0 supports multi socke
14. gether using a crossover cable Open the Windows Control Panel Select Network Select TCP IP gt the PC s Ethernet adaptor from the Configuration tab as shown below Network Ei Configuration Identification Access Control The following network components are installed IPSP compatible Protocol Internet Connection Shar CPAP Shared gt DialUp Adapter 2 TCPAP gt 1O 100M PCI Fast Ethemet Adapter Y TCPAIP gt Internet Connection Sharing File and printer sharing for Microsoft Networks Add Remove Properties Primary Network Logon Chent for Microsoft Networks File and Print Sharing Description TCPYIP ts the protocol you use to connect to the Inkermet and wide area networks FDC_PC E_Manual_V1 0_August 2007 11 of 19 Click the properties button A TCP IP Properties box similar to the one below should appear TCPAIP Properties Bindings Advanced Netblos DNS Configuration Gateway WINS Configuration P Address An F address can be automaticaly assigned to this computer If pour network does not automatically assign IP addresses ask pour network administrator for an address and then type it in the space below C Obtain an IF address automatically f Specify an IP address Cancel Select the IP Address tab Choose to Specify an IP address as shown in the figure Insert the IP address 192 168 0 113 and the corresponding subnet mask as shown
15. on about the network configuration Po MODBUS TCP RS485 Converter Windows Internet Explorer Wels G ye E bites 192 168 0 112 fall op Coe wap rae Es i i 7 we fe Bonus TCP R5485 Converter By idee Page OE Toe fj FUTUREDESIGN Serial Ethernet Converter PC E Alodule Name PC E Baud Rate 9600 8 0 1 MAC Address 30 213 2ffa Welcome tothe MODBUS TCP Converter home page This converter is used to connect an Ethernet network to a RSF 131 network and converts the Modbus TCP protocol to the standard Modbus ETU senal protocal on RS494 23 2 FDC_PC E_Manual_V1 0_August 2007 14 of 19 6 8 Tro ubleshooting Guide No Check point Solution gt S a are ee ere ee No network connection is detected The Ethernet cable is either not plugged in or wrong type of Is the LINK LED on and is cable is used For connection to a network with a the ACTIVITY LED hub or switch a straight through network cable flashing with short can be used For direct connection between PC pulses and Protocol converter a cross over Ethernet cable must be used Yes A network connection is detected the Protocol converter is connected to the network Either the PC or the Protocol converter is setup with wrong IP address Set PC E with default IP address To change the IP address of a PC use the Windows control panel gt network gt TCP IP properties and setup an IP address close to the Does the Protocol Protocol converter address
16. plugged into the RJ45 connector e Make sure that PC is set with default IP address in the range of default IP address of PC E Ex You can use 192 168 0 113 for the PC e If you wish to use LAN cable only between PC and PC E then make sure that your PC is set with IP address in the range of PC E Set PC with IP address 192 168 0 113 subnet mask 255 255 255 0 FDC_PC E_Manual_V1 0_August 2007 13 of 19 6 7 Vi ewing Web Pages The Protocol converter has built in web pages These are used for changing the configuration To view these Web pages a Web browser such as Internet Explorer or Netscape is needed To view the default Web page in Protocol converter start the Web browser and type 192 168 0 112 into the address line of the browser window The main page of the Protocol converter will now be displayed in the browser window If no Web page is displayed go back to testing the network connection from PC to the Protocol converter by using the ping command If the Protocol converter replies to the ping messages check the setup of the Web browser If the Protocol converter is directly connected to the same network as the PC direct connection to the network or bypass proxy server for local addresses should be selected in the Web browser configuration menu If the Protocol converter is connected to the PC through a firewall a proxy server should be selected in the configuration menu Contact the local network administrator for informati
17. rotocol converter the program will respond with Reply from 192 168 0 112 and information about the response time Command Prompt Microsoft Windows AP Version 5 1 2686 CG Copyright 1985 26601 Microsoft Corp G Documents and Settings user ping 192 168 6 243 Pinging 192 168 060 245 with 32 bytes of data 192 168 68 243 bytes 32 time 2ms TTL 64 192 168 6 243 bytes 32 time ims TTL 64 192 168 686 243 bhytes 32 timetims TTL 64 Reply from 192 168 868 245 bytes 32 timetims TTL 64 Ping statistics for 192 168 0 243 Packets Sent 4 Received 4 Lost loss Approximate round trip times in milli seconds Minimum ms Maximum 2ms Average Ams G 5 Documents and Settings user gt If there is a problem with the network setup the program will respond as follows Command Prompt Microsoft Windows AP Version 5 1 268060 CG Copyright 19785 2061 Microsoft Corp C Documents and Settings user ping 192 168 868 112 192 168 868 112 with 32 bytes of data timed out timed out timed out timed out Ping statistics for 192 168 860 112 Packets Sent 4 Received Lost 4 186Hy loss gt C Documents and Settings user There may be the following solutions to this problem e Check the Ethernet cable between PC and PC E We suggest that it should be cross over cable You should not use LAN cable straight cable for this purpose Check that the Link LED is illuminated when the cable is
18. smitted out the serial port without any protocol conversion and must not be one of the reserved numbers 21 ftp 80 http 502 Modbus This is the mode that is used to create a transparent point to point serial Ethernet serial link with a server converter The Client converter has to open the socket with the Server converter In order to do this the IP address of the Server must be configured in the Client converter This is done on the ip htm web page and is labeled Server IP FDC_PC E_Manual_V1 0_August 2007 7 of 19 3 Ph ysical Dimensions The Converter enclosure is shown below The module has been designed with a quick snap in assembly for mounting onto DIN rail s as per DIN EN 50 022 _ 70min 59 50 mM Oo 88888085006 J 18 19 20 21 22 23 24 7 LI l l TT 13 14 15 16 1 Co Mee a 106 mm 46 00 mm 60 00 mm Ly ee ee ee ep 1 2 3 4 5 6 7 8 9 10 11 12 GOOG GD oA YW WxHXD 70 x 106 x 59 50 mm 2 76 x 4 17 x 2 34 inches 46mm 1 81 inches 60mm 2 36 inches 3 1 Gr ounding Shielding In most cases the converter will be installed in an enclosure along with other devices which may generate electromagnetic radiation Examples of these d
19. t communications FDC_PC E_Manual_V1 0_August 2007 6 of 19 2 2 Mo de 1 Mode 1 is a server configuration and is similar to Mode 0 except that this mode only makes use of a single socket By default Mode 1 for simple applications with one Master Example Access IO modules data in one PC via PC E on Ethernet This single socket implementation waits for messages to come in on the Ethernet network and sends them out the serial port Any messages being received on the serial port are sent out on the Ethernet network As there is only one socket there is no need for the timer as in mode 0 There are a number of different configurations for this mode as follows 2 2 1 Modbus gateway Using TCP When used as a Modbus gateway the client must be configured to use Port 502 This is a reserved port number for Modbus TCP applications and informs the converter that it must implement the protocol conversion from Modbus TCP on the Ethernet network to Modbus RTU on the serial network 2 2 2 Transparent Mode Using TCP When used in transparent mode the client must be configured to use a PORT number chosen by the user This port number informs the converter that any data that is received in a socket must be transmitted out the serial port without any protocol conversion and must not be one of the reserved numbers 21 ftp 80 http 502 Modbus This is the mode that is used to create a transparent point to point serial Ethernet serial link with a
20. ting Ethernet network The IP address in the converter should be unique in the network and can be changed via the Web Server Web server allows setting IP address serial data format and operating modes Most web browsers like Internet explorer Netscape etc can access the web server PC E supports FTP protocol which enables the web pages to be customized if required The web page address for viewing the setup parameters is hitp 192 168 0 112 index htm the web page address for configuring the converter is http 192 168 0 112 ip htm The PC E converter may be connected to large number of Serial Modbus devices with the technical limit being the number of address s the networked devices are limited i e Future Design Controls IO Modules have a maximum of 127 modbus addresses while the 300 Series process controls may have address s up to 255 However the application needs configured baud rates reply timeout number of polled parameters modbus devices and or the Master s software typically have a maximum Modbus message length limiting the number of consecutive registers that may be polled in one group communication i e 20 30 50 70 or like the IO Modules 100 etc will dictate the appropriate number of Serial Modbus devices comprising one network The use of multiple PC E Converters and duplicate Serial Modbus address s on a system network is possible as the model PC E s IP address differentiates between different PC E converters and th
21. ty 5c yates 7 apts z 3 i xh w ial Ir Address Ei 7 w m Page E Tas fj FuTUREDESIGN l EHE ad L Serial Ethernet Converter PC E Ethernet Configuration Parameters Module IP a2 e jo ira Deth Gateway ra O fa jea fo N IP a Subnet Mask 255 255 255 Jo Socket Ime Chit 30 E o A l second cubri e IP Address The new IP address can be entered into the web page as shown above After this has been done you must click the Submit button to send the values to the Protocol converter The screen will now be updated and if successful will continue to display the new IP address The new IP address will only be effective after the Protocol converter power has been switched off and on again This feature allows you to check that the correct IP address has been entered before being activated If the IP address has been entered incorrectly and the power has not been switched off it is possible to re enter the correct IP address Please note that if the power has been switched off and back on again the Protocol converter will not communicate until you enter the new IP address into the address line of the browser window e Default Gateway IP Address A default gateway is a node a router on a computer network that serves as an access point to another network In enterprises however the gateway is the computer that routes the traffic from a PC to the outside network that is serving the Web pages It is only necessar
22. u sacen E E A E E A E EAE A 14 6 8 Tr GUBIESHOOUNG GUIGC inana a A a A A 15 6 9 Par ameter Configurali N senii a a d anche eee esases ahoeeeee 16 lC OMONMI Cerificate senerare TEA A tk ea eed aero 19 FDC_PC E_Manual_V1 0_August 2007 4 of 19 1 Description The Ethernet Serial Converter enables serial devices such as Future Design Controls FDC IO Modbus modules communicating on RS232 485 to be connected to a 10 100 Base TX Ethernet network The PC E Ethernet Serial Converter can be configured to operate in a number of different modes depending on the application refer to Section 2 Operating Modes for detail Each mode allows the PC E to be configured as a Transparent data link or it can perform the Gateway function of converting Ethernet Modbus TCP messages to Serial Modbus RTU messages and visa versa e Transparent Data Link Serial ASCII or Modbus data sent to the PC E is encapsulated into an Ethernet packet amp sent out on the Ethernet network while data received in an Ethernet packet is removed and sent out its serial port there is no protocol conversion to Modbus RTU or Modbus TCP e Gateway Data Link Serial Modbus data sent to the PC E is converted to Ethernet Modbus TCP and data received via Ethernet Modbus TCP is converted and sent out the serial port as Modbus RTU The PC E converters are factory programmed with a default IP address of 192 168 0 112 This address must be changed before the converter is added to an exis
23. y to configure the default gateway IP address if the PC that is accessing the Converter is on a different network e Subnet Mask In computer networks a sub network or subnet is a range of logical addresses within the address space that is assigned to an organization The subnet mask is used to inform the Converter that it must send its replies to the gateway if the IP address of the PC is on a different network When the subnet mask is set to 0 0 0 0 then it is effectively disabled and the default gateway is not used A typical subnet mask would be 299 299 255 0 e Socket Timeout If a socket connection is broken say due to a network fault it must timeout to free it up so that it can be used again This timer is triggered by activity on the converter so if there is no communications activity for longer than the timeout period the socket will close FDC_PC E_Manual_V1 0_August 2007 16 of 19 gt IP Address Windows Internet Explorer Oc jhtpsfiset6s 0 tztiphem ne http 1 92 168 0 112 ip htrn jhtpsfiszt68 0 1ztiphtm x a w ee _ Address Communication Modes 0 Server Standard Mode Multi Socket Converter Mode i l Server Socket Listen Mode Single socket 2 Chent Remote Socket Open Mode Single socket Time to wait before sending Rx Chars when Char Timeout using Port 30004 in Mode 0 or using Mode 1 2 X 10 milliseconds Port Number 502 Modbus TCP 502 Mode 1 amp 2 only Mode 2 only
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