Omega C4EIT/-EIT manual Dhcp, Dns, IP Address

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3.3 DHCP

DHCP, Dynamic Host Configuration Protocol, enables computers and devices to extract their IP configurations from a server (DHCP server).

If DHCP is enabled on your iServer, as soon as the iServer is connected to the network, there is an exchange of information between the iServer and the DHCP server. During this process the IP address, the Gateway address, and the Subnet Mask, will be assigned to the iServer by the DHCP server. Note that the DHCP server must be configured correctly to do such assignment.

The iServer is shipped with DHCP disabled (factory default).

If fixed or static IP address is desired, the DHCP function must be disabled.

The DHCP can be enabled by accessing the iServer’s web server and selecting Network option (refer to Section 4.5.2).

1. It is very important to communicate with the network administrator in order to understand DHCP and its existing configurations on the host server, before enabling DHCP on the iServer.

2.The iServers are shipped with a default static IP address of 192.168.1.200 and Subnet Mask of 255.255.255.0.

3.On Windows servers where DHCP and DNS are separate functions it’s very important to configure DHCP server to communicate with DNS in order for the iServer’s Host Name to correctly respond. If you cannot access the iServer using its Host Name, please contact your network administrator to make sure DHCP and DNS servers are linked together.

3.4DNS

DNS, Domain Name System enables computers and devices to be recognized over a network based on a specific name instead of IP addresses.

For example, instead of having to use http://192.168.1.200 (IP address), you would use only http://eit0a0b 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 "eit" followed by the last four digits of the MAC address of that particular iServer.

3.5 IP Address

Every active device connected to the TCP/IP network must have a unique IP address. This IP address is used to build a connection to the iServer itself and the serial device connected to the iServer’s serial port. All network devices like computers that use TCP/IP protocol to communicate with each other should have a unique 32-bit address called IP address.

The IP address is divided into two portions, the network ID and the host ID. For instance, every computer on the same network uses the same network ID. At the same time, all of them have different host IDs.

For more details about the IP address see Appendix B.

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Contents User’s Guide Page Dhcp DNS Table of ContentsList of Figures ARP Commands and Responses IServer DiagnosticsAssigning an IP Address using iConnect Accessing the iServer’s HomeTable K-1 Data Transmission Characteristics RS485ILog Error Messages List of TablesBefore You Begin TIPEMC Considerations Part IntroductionDescription Accessing Devices Over the EthernetPart Hardware Physical Characteristics and MountingSerial Communication Interfaces For Models with -C4EIT Network Communication Interface Section Half Duplex Hookup Pin# ISeries Wiring Master/Slave Units via RS485 InterfaceNetwork Communication Interfaces 1 10BASE-T RJ-45 Pinout RJ-45 Pinout Connecting iServer to PC/Hub/Switch/RouterPart Network Configuration Network ProtocolsEthernet MAC Address Dhcp DNSIP Address Example C\Telnet 192.168.1.200 Serial Interface Configuration Communication Protocol Command Prefix LettersPart Operations LSB MSB Pinging the iServer from a DOS Prompt Default IP AddressIServer Login Access and Configuration Using a Web Browser4a iServer -C4EIT Overview OverviewIServer Network Network IServer Serial Page RS485 Serial Port IServer Serial Page Network to Serial IServer Serial Page Packing Techniques IServer Serial Page Multi-Host Connection 10 iServer Configuration Page Ethernet Configuration Date and Time 11 iServer Management Page Email, Snmp Management Email Snmp 12 iServer Management Page Alarm AT&T 13 iServer Security 14 iServer Device Query 15 iServer Device Setup Page RS485 -C4EIT Device Setup -C4EIT16 iServer Device Parameters Page -C4EIT 17 iServer Device Setup Page -EIT 18 iServer Device Parameters Page -EIT Device Parameters -EITReadings Device Setpoints Readings21 iServer Terminal Terminal22 iServer System System23 iServer Diagnostics Page 4.5.12.1 Diagnostics Serial Port DiagnosticsDiagnostics Ping Diagnostics Ethernet PortSerial Interface -C4EIT Part SpecificationsTime-Lag, IEC 127-3 recognized Serial Interface Network InterfaceTransients Overvoltage Surge 1.2 / 50uS pulse Electrical Safety EN61010-12001Part Measurement CategoryAppendix Aglossary Appendix B IP Address Class C Appendix C IP NetmaskMask Dotted Notation Mask Binary Mask Bits Class a Class BAppendix D Ascii Chart Dec Hex BinaryDec Hex Binary Char No Parity No parity Dec Hex Ctrl Key Definition Char Equiv Appendix D Ascii Chart ContinuationAscii Control Codes Dec Hex Ctrl Key DefinitionAppendix E IConnect Software Figure E-1 Assigning an IP Address using iConnectFigure E-2 Accessing the iServer’s Home Communication interface skip for embedded ethernet -EIT Appendix F HTTPget Program\iServerhttpget -r -S *02X01\r 192.168.1.2002000 \iServerhttpget -r -S *02X01\r Network read timeoutArp -g fi Same as arp -a 192.168.1.96Appendix G ARP Program Appendix H Telnet Setup Admin PortISeries? Figure H-3 Telnet Setup iServer Help Figure I-1b Serial Tunneling iSeries -EIT Figure I-1a Serial Tunneling iSeries -C4EITRemote iSeries -EIT/-C4EIT Figure I-2 Device-to-Device CommunicationLocal iSeries -EIT/-C4EIT Figure I-3 Serial Multi-Host Connection -C4EIT Tunneling Troubleshooting IPORT, COM Port Redirector IPORT OverviewAppendix J IPORT Figure J-2a Redirect Serial Connection Figure J-3 iPORT Main Window IPORT Configurations Appendix K ILog Software Figure K-1 iLog Software Logging Data for an iSeriesISeries Wireless DevicesTable K-1 iLog Excel Applications Networked Product ILOG File AlternateTable K-2 iLog Error Messages Error # Description Page Page Page Page Page WARRANTY/DISCLAIMER Shop on line at omega.com
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