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2.4 Serial Communication Interfaces (For Models with RS485 Port)

The iSeries controller/monitor with the Embedded Ethernet Server option board support
only RS485/422 interfaces. These standards define the electrical characteristics of a
communication network. The RS485 port of the Ethernet Server is fully compatible for
use with RS422 instruments. The RS485 is an extended version of the RS422
communication standard which increases the allowable number of devices from 10 to
32 by improving the electrical characteristics.

• The 

RS485

standard (

multi-point

) allows one or more devices (multi-dropped) to be 

connected to the Ethernet Server using a two-wire connection (half-duplex) +Rx/+Tx 
and –Rx/-Tx. Use of RS485 communications allows up to 32 devices to connect to the
Web Server with cable length up to 4000 feet long.

Although the RS485 is commonly referred to as a "two wire" connection, the 
Web Server also provides a ground/return shield connection to use as a
common connection for EMI noise protection.

Table 2.2

shows some characteristics of the RS485 communication interface.

Table 2.2 Data Transmission Characteristics RS485

Data Transmission Characteristics

RS485

Transmission Mode

Differential

Electrical connections

2 wire

Drivers per line

32 drivers

Receivers per line

32 receiver

Maximum data rate

10M bits/s

Maximum cable length

4000 ft (1200 meters)

Summary of Contents for DPi8

Page 1: ...com e mail info omega com iSeries info omega com specs iseries For latest product manuals omegamanual info Shop on line at Embedded Ethernet for iSeries Monitor Controller DPi8 CNi8 CNi8D CNi16D EI C4EI RoHS 2 Compliant ...

Page 2: ...660QQ FAX 203 359 7700 QQ e mail info omega com Canada Q 976 Bergar QQ Laval Quebec H7L 5A1 QQ TEL 514 856 6928QQ FAX 514 856 6886 QQ e mail info omega ca For immediate technical or application assistance USA and Canada Q Sales Service 1 800 826 6342 1 800 TC OMEGA QQ Customer Service 1 800 622 2378 1 800 622 BEST QQ Engineering Service 1 800 872 9436 1 800 USA WHEN Mexico and Q TEL 001 800 TC OME...

Page 3: ...12 4 4 Operations 14 4 5 Setup and Operation using a Web Browser 14 4 5 1 Read Devices 16 4 5 1 1 Device Setpoints 16 4 5 2 Send Raw Command 16 4 5 3 Device Setup 17 4 5 3 1 Modify Device Parameters or Device List Entry 17 4 5 4 Configuration 18 4 5 5 Access Control 21 4 6 Setting a New IP Address over the Network 23 4 7 Terminal Server Function 24 4 8 Terminal Emulation 25 4 9 Telnet Setup 26 4 1...

Page 4: ...igure 4 10 Configuration 18 Figure 4 11 Access Control 21 Figure 4 12 Access Control 23 Figure 4 13 Terminal Server Configuration 24 Figure 4 14 Terminal Emulation 25 Figure 4 15 Tera Term Telnet Connection Screen 26 Figure 4 16 Telnet Setup Menu iServer Configuration Page 26 Figure 4 17 Telnet Setup Menu iServer Help Page 27 Figure 4 18 ARP Commands and Responses 29 Figure 4 19 PC to Device Commu...

Page 5: ...that you have received everything listed Inspect the container and equipment for signs of damage as soon as you receive the shipment Note any evidence of rough handling in transit Immediately report any damage to the shipping agent The carrier will not honor damage claims unless all shipping material is saved for inspection After examining and removing the contents save the packing material and ca...

Page 6: ...ion The switch shall not be incorporated in the main supply cord Furthermore to provide protection against excessive energy being drawn from the main supply in case of a fault in the equipment an overcurrent protection device shall be installed Do not exceed voltage rating on the label located on the top of the instrument housing Always disconnect power before changing signal and power connections...

Page 7: ...terfaces The standard features include Use standard Web Browser TCP connection HTTPGET DOS program or Telnet Simulation for network connectivity Install via RS 485 422 serial port connection Transfer data from RS 485 422 serial interface to TCP IP using built in socket server Use a standard home page or customize web page using special applets which are available on our Web site The following exam...

Page 8: ...g For physical dimensions and installation instructions see Quickstart and Manual for iSeries monitor controller 2 2 Rear Panel of iSeries Meter with Embedded Ethernet Server Figure 2 1 Rear Panel View of i16 and i8 Series Meters with Embedded Ethernet Server ...

Page 9: ...ction ETHERNET RJ45 interface for 10BASE T connection RESET Button Used for power reseting the iServer COL ACTIVITY LED Red Blinking Indicates network activities receiving or sending packets ON NET LINK LED Green Solid Indicates good network link TX LED Yellow Blinking Indicates transmitting data to the serial port RX LED Green Blinking Indicates receiving data on the serial port 1 4 3 2 OFF ON 1 ...

Page 10: ...evices multi dropped to be connected to the Ethernet Server using a two wire connection half duplex Rx Tx and Rx Tx Use of RS485 communications allows up to 32 devices to connect to the Web Server with cable length up to 4000 feet long Although the RS485 is commonly referred to as a two wire connection the Web Server also provides a ground return shield connection to use as a common connection for...

Page 11: ...t Half Duplex RS485 Wiring Value of the termination resistor is not critical and depends on the cable impedance Table 2 3 shows RS485 half duplex hookup between the iServer serial port and device with RS485 communication interface Table 2 3 Half Duplex Hookup Pin iSeries DEVICE WITH RS485 Pin 9 Tx Rx Transmit Receive Tx Rx Transmit Receive Pin 10 Tx Rx Transmit Receive Tx Rx Transmit Receive Pin 8...

Page 12: ...out 2 5 2 10Base T Crossover Wiring When connecting the iServer directly to the computer the transmit data pins of the computer should be wired to the receive data pins of the iServer and vice versa The 10Base T crossover cable with pin connection assignments are shown on Figure 2 5 Figure 2 5 10Base T Crossover Cable Wiring Use straight through cable for connecting the iServer to an Ethernet hub ...

Page 13: ... re connected to the LAN from your computer a correspondence table relates your IP address to your computer s physical MAC address The MAC address can be found on the label of your device and contains 6 bytes 12 characters of hexadecimal numbers XX XX XX XX XX XX hex For example 0A 0C 3D 0B 0A 0B Remove the small label with the default IP address and there will be room to put your IP address See F...

Page 14: ...l computers and devices to be recognized over a network based on a specific name instead of an IP address For example instead of having to use http 192 168 1 200 IP address you would use only http eis03ec or any eight character name stored as Host Name under Access Control menu in the iServer Home Page The default DNS name for an iServer is eis followed by the last four digits of the MAC address o...

Page 15: ...54 Your PC s IP address cannot be the same as the iServer s IP address You also need to make sure that your PC s Subnet Mask is 255 255 255 0 This is a good way to access the iServer over the network and make any configuration changes needed If the factory default address is already in use on your network use an Ethernet crossover cable between your computer and the iServer and modify the IP addre...

Page 16: ...thernet Server and your device shown in Table 4 1 which shows the Command Prefix Letters Command Classes Table 4 1 Command Prefix Letters COMMAND PREFIX COMMAND CLASS MEANING AE Special read Communication parameters P Put Write HEX data into RAM W Write Write HEX data into EEPROM G Get Read HEX data from RAM R Read Read HEX data from EEPROM U Read status byte V Read measurement data string in deci...

Page 17: ...dix D for binary hex ASCII chart two characters to the byte Square brackets indicating optional status enclose this string since some commands contain no data nn are the two ASCII characters for the device Bus Address of RS485 communication Use values from 00 to hex C7 199 decimal The following format is used for each byte sent and received through serial port of Ethernet Server 1 Seven or Eight b...

Page 18: ...igure 4 1 Pinging eis03ec MS DOS Prompt This proves that the connection is proper and you can get into configuration or run mode using the Telnet or Web browser 4 5 Setup and Operation Using a Web Browser a Start your web browser b From the browser you type http eisxxxx using the last four digits from the MAC address label located on the device if DHCP and DNS are used If a static IP address is us...

Page 19: ...trol which requires an Administrator password refer to Section 4 5 5 The Read Devices does not require a password The default Login password is 12345678 This password can be up to 16 alpha numeric case sensitive characters ADMINISTRATOR ADMINISTRATOR LOGIN LOGIN http 192 168 1 200 http 192 168 1 200 SERVER HOME PAGE SERVER HOME PAGE http 192 168 1 200 Address Read Devices Device Setup Configuratio...

Page 20: ...ery Command Response 01 X01 01X01092 4 SERIAL DEVICE QUERY http 192 168 1 200 Address Send SERIAL DEVICE QUERY DEVICE SETPOINTS DEVICE SETPOINTS http 192 168 1 200 Address Device No R01 Main Menu Setpoint 2 0 Setpoint 3 0 Setpoint 4 0 Setpoint 1 0 Update Reset 16 1 iSeries1 092 4 Deg C Auto Update READ DEVICES http 192 168 1 200 Address 000 READ DEVICES 092 4 Deg C Main Menu Click on Device No on ...

Page 21: ...C Display Format raw Device Name iSeries 1 Reading Command X01 Update Reset Cancel DEVICE SETUP DEVICE SETUP http 192 168 1 200 Address Take Readings Update Checked Box Click on Device No on the left to modify Device Parameters Main Menu No 1 2 3 4 5 6 7 8 Device Name iSeries 1 ABCDEFGH ABCDEFGH ABCDEFGH ABCDEFGH ABCDEFGH ABCDEFGH ABCDEFGH Display Units Deg C ABCDEFGH ABCDEFGH ABCDEFGH ABCDEFGH AB...

Page 22: ... are 1 and 2 bits default is 1 bit Flow Control Options are Software Flow Control Xon Xoff Hardware Flow Control CTS RTS and None default is None CONFIGURATION CONFIGURATION http 192 168 1 200 Address Serial Communication Remote Access Tunneling Terminal Server Main Menu Save Reset Baud Rate 9600 Data Bit 7 Bits Parity odd Stop Bits 1 bit Flow Control none Transciever RS 485 Modbus TCP disable End...

Page 23: ...00 ms 4 5 4 B Terminal Server TCP UDP The iServer supports TCP and UDP protocol default is TCP If UDP is selected it can be configured either for Broadcast UDP or Directed UDP In case of Broadcast UDP the iServer will transmit the serial data to every node on the network This can be accomplished if the Remote IP Address is set to 255 255 255 255 The Broadcast UDP is a practical solution when one d...

Page 24: ... can be used in the Serial Tunneling described in Section 4 11 If the connection in Serial Tunneling is broken due to network problems power failure etc the Reconnect option will try to get the connection back on line every whatever the Connection Timeout is set to For Example if the Connection Timeout is set to 1000 x10 ms or 10 seconds then every 10 seconds the iServer attempts to reconnect and ...

Page 25: ...word can be up to 16 alpha numeric case sensitive characters If there is no Login Password assigned blank box the iServer will not require a password to access and modify iServer Home page menu items Admin administrator Password This allows users to access and modify the Access Control page The default password is 00000000 This password can be up to 16 alpha numeric case sensitive characters If th...

Page 26: ...er 3 to ON position Gateway Address A gateway is a network point that acts as an entrance to another network A gateway is often associated with a router which knows where to direct a given packet of data that arrives at the gateway If the iServer is sending packets to another network node that is not on the same network on which the iServer is connected a gateway address needs to be given to the i...

Page 27: ...ess Control button you ll be asked for the password First default Login password is 12345678 and the Admin password is 00000000 then you should be on the administrator setup page were you can simply type in the desired Static IP address and click Save Figure 4 12 Access Control For the IP address to take effect the iServer needs to be turned OFF ON or press the Reset button Once all of this is don...

Page 28: ...ber to any number from 599 65535 except numbers 1000 and 2002 4 Press the Save button to store the new settings From your application software on the host machine you can now point to the IP address of the iServer and the assigned port number to establish a TCP connection to your serial device connected to the serial port of the iServer Figure 4 13 Terminal Server Configuration CONFIGURATION CONFI...

Page 29: ...itted out from the serial port of the iServer If the command is more than one character you must type the command in a different window and then use copy and paste options to drop the command in the Terminal Emulation window the right mouse button will give you copy and paste options Figure 4 14 Terminal Emulation http 192 168 1 200 Address Main Menu TERMINAL EMULATION TERMINAL SERVER reading 25 ...

Page 30: ... 2002 for logging into the iServer Configuration page or 2000 for accessing the serial device connected to the iServer s serial port Figure 4 15 Tera Term Telnet Connection Screen Figure 4 16 Telnet Setup iServer Configuration Page The default password for Telnet Login is 00000000 and can be changed if desired Telnet works only in RS 232 mode Firmware Version 4 1 Admin Password 00000000 Admin Logi...

Page 31: ...figuration Command cc description pppppp BD BaudRate 0 300 1 600 2 1200 3 2400 4 4800 5 9600 6 19200 7 38400 8 57600 9 115200 PT Parity 0 none 1 Odd 2 even ST StopBits 0 1bits 1 2bits DT DataBits 0 7bits 1 8bits FC FlowControl 0 none 1 XON XOFF 2 Hardware MD Mode 0 RS232 1 RS485 MB Modbus TCP 0 disable 1 enable TO TimeOut xxxx ms Rang range 100 9999 TU TCP UDP 0 TCP 1 UDP TT TerminalType 0 Host 1 ...

Page 32: ...d software available on our website and CD Example to use the Httpget program 1 Create a directory C iServer Httpget 2 Copy httpget exe and readme_features doc files to this directory 3 Make sure that you are in this directory and then enter the following test program C iServer Httpget httpget r S 01X01 r 192 168 1 200 1000 where r S are switches before the command string 01 is device address in h...

Page 33: ...nd to manually add a permanent static entry to the ARP cache arp d Use this command to manually delete a static entry Ping the destination computer using IP address first before using the arp a command The following window shows examples of arp commands and responses Your computer has an IP address of 192 168 1 118 The destination computer has an IP address of 192 168 1 96 Figure 4 18 ARP Commands...

Page 34: ...cal lab equipments electronic signboards and many others that are directly connected to PCs via their serial ports These devices can be attached to shared Ethernet networks TCP IP protocol and get accessed controlled and managed remotely using the iServer products Any two iServer s can talk to each other over the Ethernet LAN WAN and Internet using TCP IP protocol Therefore the connected serial de...

Page 35: ...D and the Timeout to 500 7 Under Terminal Server section set Number of Connections to 1 or higher 8 Click on Save button for the changes to take place Make sure that the serial cable and communication settings between the iServer and the serial device are valid Figure 4 21 Configuration Menu Remote iServer CONFIGURATION CONFIGURATION http 192 168 1 50 Address Serial Communication Remote Access Tun...

Page 36: ...nnection between the two iServers goes down due to network problems power failure etc the Reconnect option will enable the Local iServer to reconnect with the Remote iServer based on the specified time interval in the Connection Timeout For example based on a timeout of 1000 x 10 ms 10 seconds the Local iServer will continually attempt to reconnect and re establish the tunnel with the Remote iServ...

Page 37: ...ted from the internet and forwarded to connections on the Internet The Mail Notifier utility operates under Windows 98 NT 4 0 2000 and XP in conjunction with existing email that supports the MAPI messaging interface If MS Outlook has been loaded the MAPI support should be available 4 13 1 Installation The Mail Notifier must be loaded on a computer running Microsoft Windows versions specified earli...

Page 38: ...cess The following instructions work with some versions of Microsoft Outlook Note though that some email systems may prevent the use of Mail Notifier due to security constraints The simplest way to obtain a connection the the Email services is as follows 1 Configure the Mail Notifier to connect to the email by displaying a Login Box This option is found by selecting View Options from the Mail Noti...

Page 39: ...ing Reading command Normally set to X01 to obtain reading from the devices If you want to change this setting refer to HTTPget Section 4 10 Defining the Alarm setup High Low High value or Low value Specifying Pause Interval It determines how many seconds each subsequential alarm notification will be sent Determining Monitor interval It establishes the interval or time resolution in seconds for whi...

Page 40: ...t yellow RX Receive green Power green PROCESSOR CPU Enhanced 8051 22 MHz Memory 16 Kbyte SRAM 512 Kbyte Flash Management Serial Login Telnet Login Internal Web Server 36 INTERNAL WEB SERVER Uses Dynamic web pages and Java applets 256 Kbyte capacity ENVIRONMENTAL Operating Temperature 0 to 50 C 32 to 122 F 90 RH Power Input 10 32 Vdc Consumption 2 W max GENERAL Agency Approvals FCC B C UL Software ...

Page 41: ... Login Password 12345678 Admin Password 00000000 DHCP Disabled Serial Interface Communication Protocol RS 485 Flow Control None Baud Rate 9600 Parity Odd Stop Bit 1 bit Data Bit 7 bits Timeout 500 msec End Character 0D Hex Carridge Return Terminal Server Server Type Slave Number of Connections 0 Port 1000 Server Mode Disable Remote Access Tunneling Remote Access Disable Remote Port 2000 Remote IP ...

Page 42: ...ternet IP address Internet Protocol address is a 32 bit number that identifies each sender or receiver of information that is sent in packets across the Internet IP Netmask is a 32 bit pattern of bits used to determine which part of the IP address is the network portion and which part is the host portion MAC Media Access Control Address is your computer s unique hardware number When you re connect...

Page 43: ...n support approximately 216 65 536 computers per network The IP addresses range in binary from 10000000 00000000 xxxxxxxx xxxxxxxx to 10111111 11111111 xxxxxxxx xxxxxxxx The IP addresses range in decimal from 128 0 x x to 191 255 xxx xxx Class B network ID s support a medium number of hosts Class C addresses have 24 bits of network ID and 8 bits of host ID They can support approximately 28 256 com...

Page 44: ...t Mask Dotted Notation Mask Binary Mask Bits Class A 255 0 0 0 Default 0 255 192 0 0 2 255 224 0 0 3 255 240 0 0 4 255 248 0 0 5 255 252 0 0 6 255 254 0 0 7 255 255 0 0 8 255 255 128 0 9 255 255 192 0 0 10 255 255 255 252 22 Class B 255 255 0 0 Default 0 255 255 192 0 2 255 255 255 252 14 Class C 255 255 255 0 Default 0 255 255 255 192 2 255 255 255 254 6 To determine the number of valid hosts ID ...

Page 45: ...2 01010010 DC3 19 13 00010011 S 83 53 01010011 DC4 20 14 00010100 T 84 54 01010100 NAK 21 15 00010101 U 85 55 01010101 SYN 22 16 00010110 V 86 56 01010110 ETB 23 17 00010111 W 87 57 01010111 CAN 24 18 00011000 X 88 58 01011000 EM 25 19 00011001 Y 89 59 01011001 SUB 26 1A 00011010 Z 90 5A 01011010 ESC 27 1B 00011011 91 5B 01011011 FS 28 1C 00011100 92 5C 01011100 GS 29 1D 00011101 93 5D 01011101 RS...

Page 46: ...7 11 Crtl Q Data Control 1 XON SOH 01 01 Crtl A Start of DC2 18 12 Crtl R Data Control 2 Header STX 02 02 Crtl B Start of Text DC3 19 13 Crtl S Data Control 3 XOFF ETX 03 03 Crtl C End of Text DC4 20 14 Crtl T Data Control 4 EOT 04 04 Crtl D End of NAK 21 15 Crtl U Negative Transmission Acknowledge ENQ 05 05 Crtl E Inquiry SYN 22 16 Crtl V Synchronous Idle ACK 06 06 Crtl F Acknowledge ETB 23 17 Cr...

Page 47: ...connected to the Mains Supply power Maximum Line to Neutral working voltage is 50Vac dc This unit should not be used in Measurement Categories II III IV Transients Overvoltage Surge 1 2 50uS pulse Input Power 2500V Input Power 1500V Low Voltage dc Power Option Ethernet 1500V Input Output Signals 500V Note Units configured for external low power dc voltage 12 36Vdc EMC EN61326 1997 and A1 1998 A2 2...

Page 48: ...TIONS Equipment sold by OMEGA is not intended to be used nor shall it be used 1 as a Basic Component under 10 CFR 21 NRC used in or with any nuclear installation or activity or 2 in medical applications or used on humans Should any Product s be used in or with any nuclear installation or activity medical application used on humans or misused in any way OMEGA assumes no responsibility as set forth ...

Page 49: ...ocity Indicators Turbine Paddlewheel Systems Totalizers Batch Controllers pH CONDUCTIVITY pH Electrodes Testers Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators Pumps Industrial pH Conductivity Equipment DATA ACQUISITION Data Acquisition Engineering Software Communications Based Acquisition Systems Plug in Cards for Apple IBM Compatibles Datalogging Systems Recorders Print...

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