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- Page 1 User Manual 905U-E Wireless Ethernet Bridge ELPRO Technologies Pty Ltd, 9/12 Billabong Street, Stafford Q 4053, Australia. Tel: +61 7 33524533 Fax: +61 7 33524577 Email: sales@elprotech.com Web: www.elprotech.com...
- Page 2 905U-E Wireless Ethernet Bridge User Manual Thank you for your selection of the 905U-E Wireless Ethernet Bridge. We trust it will give you many years of valuable service. ATTENTION! Incorrect termination of supply wires may cause internal damage and will void warranty.
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Page 3: Fcc Notice
This device must accept any interference received, including interference that may cause undesired operation. This device must be operated as supplied by ELPRO Technologies Pty Ltd. Any changes or modifications made to the device without the written consent of ELPRO Technologies Pty. -
Page 4: Table Of Contents
905U-E Wireless Ethernet Bridge User Manual the effective date of purchase by the end user. The effective date of purchase is decided solely by ELPRO Technologies. This warranty does not extend to: failures caused by the operation of the equipment outside the particular product's specification,... - Page 5 Accessing Configuration inside a module for the first time ..........14 Modifying an existing configuration..................19 Remote modification of an existing configuration .............. 19 Setting a 905U-E to Factory Default Settings..............25 Extending a wired network ....................26 Connecting two separate networks together................ 28 Page 5 ©...
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Page 6: Power Supply
The supply may be a floating supply or negatively grounded. The power requirements of the 905U-E units is 700mA at 12VDC or 450mA at 24VDC. Ethernet Connections HUB NIC Serial Connections 2.4.1 RS232 Serial Port... -
Page 7: 2.4.2 Rs485 Serial Port
Ring indicator - indicates another module is attempting to connect in controlled mode. 2.4.2 RS485 Serial Port The RS485 port provides for communication between the 905U-E unit and its host device using a multi-drop cable. Up to 32 devices may be connected in each multi-drop network. Page 7... -
Page 8: Digital Input/Output
905U-E Wireless Ethernet Bridge User Manual As the RS485 communication medium is shared, only one of the units on the RS485 cable may send data at any one time. Thus communication protocols based on the RS-485 standard require some type of arbitration. -
Page 9: Chapter Three
The 905U-E module provides a full-duplex RS232 serial port and half-duplex RS485 serial port. The radio communications is half-duplex - this means that the 905U-E operates at half duplex. Many applications use full duplex RS232 communications but do not require full duplex - the Page 9 ©... -
Page 10: Addressing
905U-E Wireless Ethernet Bridge User Manual protocol used operates at half-duplex and will operate with the 905U-E without problems. If an application really requires full duplex communications, then the 905U-E should not be used. Radio Data Addressing A 905U-E network comprises modules with the same "system" address. Only modules with the same system address will communicate with each other. -
Page 11: Access Point
Chapter Three Operation Access Point Access Points (AP)??. Alternatively, Access Points may be used as a single hop repeater. All radio traffic with the radio cell is controlled by the Access Point, and must pass through the Access Point. Ideally the Access Point is placed at the wired location where the majority of data traffic will flow. -
Page 12: Radio Rates
There can be interference from other devices on the same band. As the “hopping sequence” used by the 905U-E is different to other devices on this band, the probability of two devices using the same channel is small, and if this does occur, the probability of sharing the same channel on a re-transmission is even smaller. -
Page 13: Chapter Four
IP addresses and netmasks must be set to reflect the Device Mode configured. If the unit is configured as a Router, then the 905U-E requires an IP address and netmask to be set for within each of the networks it is joining. When configured as a Bridge, the 905U-E requires only one IP address. -
Page 14: Configuration Program
Consult your network administrator for an IP address on your network, the gateway IP address, and network mask. Adjust PC or 905U-E network settings so that both are on the same network. This may achieved two ways as outlined below. - Page 15 Chapter Five Specifications Select Internet Protocol (TCP/IP) and click on Properties. Page 15 © February 2005...
- Page 16 905U-E Wireless Ethernet Bridge User Manual On the General tab enter IP address 192.168.123.1, Subnet mask 255.255.255.0, and default gateway 192.168.123.1. Open Internet Explorer and ensure that settings will allow you to connect to the IP address selected. If the PC uses a proxy server, ensure that Internet Explorer will bypass the Proxy Server for local addresses.
- Page 17 Open a terminal package with 19200bps data rate, 8 data bit, 1 stop and no parity. c) Power up 905U-E. Basic network settings will be displayed on the terminal as illustrated below. When prompted, hit enter key to stop automatic boot process.
- Page 18 This may be performed with the command: bgw <Type the gateway IP address> g) Choose an IP address for the 905U-E being upgraded. This IP address must be on the same network as the computer you have connected the ethernet cable to. This may be performed with the command: bip <Type the IP address>...
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Page 19: Modifying An Existing Configuration
Open Internet Explorer to the IP address set for the module (ie http://xxx.xxx.xxx.xxx/ where xxx.xxx.xxx.xxx is the IP address set on the 905U-E.), and use menu system to open the item you wish to modify. When prompted for username and password, enter “user” as the username, and the previously configured password in the password field. - Page 20 By default this is set to 255.255.255.0. Wireless IP Address The IP address of the 905U-E on the radio port. If the unit is configured as a bridge this address must be the same as the ethernet IP address. If configured as a router, the IP address must be different from the Ethernet IP Address.
- Page 21 By default, this is set as auto. Fade Margin When automatic rate is selected, the 905U-E chooses a rate based on the received signal strength of transmissions. The value nominated by the Fade Margin, is subtracted from this average of RSSI and then used to decide which rate to transmit at.
- Page 22 The maximum transmission unit (MTU) of data over the radio. This selects the maximum number of bytes that will be transmitted in one message. If more than this number of bytes is input into the 905U-E, the module will transmit more than one message.
- Page 23 Module Information Webpage Fields This configuration page is primarily for information purposes. With the exception of the password, the information entered here is displayed on the root webpage of the 905U-E. Password Configuration password. When changing the password on this screen, it will be sent unencrypted over any wired network.
- Page 24 905U-E Wireless Ethernet Bridge User Manual Man_905U-E Rev 1.0 Page 24...
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Page 25: Configuration Examples
Specifications Configuration Examples Setting a 905U-E to Factory Default Settings 1. Access configuration webpages of 905U-E. Refer section Accessing Configuration inside a module for the first time, or Modifying an existing configuration. 2. Click on System Tools Menu Item 3. Enter username “user” and password “user”, when prompted for password. -
Page 26: Extending A Wired Network
1. Connect straight through ethernet cable between PC and 905U-E. 2. Ensure configuration PC and 905U-E are setup to communicate on the same network 3. Set 905U-E to start with factory default settings. Refer to section Setting a 905U-E to Factory Default Settings. - Page 27 Perform the same configuration steps as the Access Point configuration with the following differences: • At step 0 in Option B, set IP address of 905U-E to 192.168.0.201 with command bip 192.168.0.201 • At step 0 in Option B, open configuration webpage with Internet Explorer at address http://192.168.0.201/...
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Page 28: Connecting Two Separate Networks Together
ROUTE. For this example use: ROUTE ADD 192.168.0.50.0 MASK 255.255.255.0 192.168.0.200 Network B Configuration All devices on Network B should be configured so their gateway IP address is that of the 905U-E Access Point as 192,168.50.200. Access Point Configuration 1. Connect straight through ethernet cable between PC and 905U-E. -
Page 29: February
Perform the same configuration steps as the Access Point configuration with the following differences: • At step 0 in Option B, set IP address of 905U-E to 192.168.0.201 with command bip 192.168.0.201 • At step 0 in Option B, open configuration webpage with Internet Explorer at address http://192.168.0.201/... - Page 30 905U-E Wireless Ethernet Bridge User Manual Extending range of a network with a Store and Forward hop Existing Ethernet Network 905U-E 905U-E 905U-E Client 1, Access Client 2, 192.168.0.0 Bridge Point, Bridge 255.255.255.0 Bridge Ethernet HUB / SWITCH Configure units as described in Section Extending a wired network. Place the Access Point at the remote intermediate store and forward location.
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Page 31: Diagnostics Chart
Appendix A Hayes Commands Chapter Six TROUBLESHOOTING Diagnostics Chart INDICATOR CONDITION MEANING OK LED OFF Continuously • Power supply failure • CPU failure OK LED ON Continuously • Normal Operation • Radio transmitting Radio TX LED ON Flashes briefly • Radio receiving data Radio RX LED ON GREEN flash RED flash... -
Page 32: Statistics
905U-E Wireless Ethernet Bridge User Manual Statistics PING IPCONFIG ROUTE Man_905U-E Rev 1.0 Page 32... - Page 33 Appendix A Hayes Commands Chapter Six GLOSSARY Acknowledgment. Access point An access point is the connection that ties wireless communication devices into a network. Also known as a base station, the access point is usually connected to a wired network. Antenna Gain Antennae don t increase the transmission power, but focus the signal more.
- Page 34 905U-E Wireless Ethernet Bridge User Manual A network device transmits data after detecting that a channel is available. However, if two devices transmit data simultaneously, the sending devices detect a collision and retransmit after a random time delay. DHCP A utility that enables a server to dynamically assign IP addresses from a predefined list and limit their time of use so that they can be reassigned.
- Page 35 Appendix A Hayes Commands frequency is 60 Hz, the AM broadcast radio frequency band is 535—1605 kHz, the FM broadcast radio frequency band is 88—108 MHz, and wireless 802.11b LANs operate at 2.4 GHz. IEEE Institute of Electrical and Electronics Engineers, New York, www.ieee.org. A membership organization that includes engineers, scientists and students in electronics and allied fields.
- Page 36 905U-E Wireless Ethernet Bridge User Manual TCP. Together, therefore, IPX-SPX provides connection services similar to TCP/IP. A type of internal computer bus that allows the addition of card-based components like modems and network adapters. ISA has been replaced by PCI and is not very common anymore.
- Page 37 Appendix A Hayes Commands Network Address Translation: A network capability that enables a houseful of computers to dynamically share a single incoming IP address from a dial- up, cable or xDSL connection. NAT takes the single incoming IP address and creates new IP address for each client computer on the network. A type of PC adapter card that either works without wires (Wi-Fi) or attaches to a network cable to provide two-way communication between the computer and network devices such as a hub or switch.
- Page 38 905U-E Wireless Ethernet Bridge User Manual networks traffic cop: rather than transmitting all the packets it receives to all ports as a hub does, a switch transmits packets to only the receiving port. A protocol used along with the Internet Protocol (IP) to send data in the form of individual units (called packets) between computers over the Internet.
- Page 39 Appendix A Hayes Commands bit) encryption. Wi-Fi Wireless Fidelity: An interoperability certification for wireless local area network (LAN) products based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard. Ad-Hoc Mode A client setting that provides independent peer-to-peer connectivity in a wireless LAN.
- Page 40 905U-E Wireless Ethernet Bridge User Manual DSSS Direct-Sequencing Spread-Spectrum. ECP Encryption Control Protocol. Used to negotiate data encryption over PPP links. ESA Encapsulating Security Payload. A mechanism which provides confidentiality and integrity protection to IP datagrams. FHSS Frequency-Hopping Spread-Spectrum Fresnel Zone The area around the visual line-of-sight that radio waves spread out into after they leave the antenna.
- Page 41 Appendix A Hayes Commands WEP Wired Equivalent Privacy. Encryption-based security using a pre-shared key. WiFi (Wi-Fi) Wireless Fidelity. Wireless Local Area Networking standard. WLAN, W-LAN Wireless Local Area Network (LAN). WLL Wireless Local Loop. Page 41 © February 2005...
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