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Related Manuals for ELPRO 245U-E
Summary of Contents for ELPRO 245U-E
- Page 1 245U-E Wireless Ethernet & Device Server ELPRO, 9/12 Billabong Street, Stafford Q 4053, Australia. Tel: +61 7 33528600 Fax: +61 7 33528677 Email: sales@elprotech.com Web: www.elprotech.com ELPRO 24 hour Support Help-line America (866) 7134409 Rest of the world +617 3352 8624...
- Page 2 245U-E Wireless Ethernet User Manual Thank you for your selection of the 245U-E Wireless Ethernet Modem. 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. Any changes or modifications made to the device without the written consent of ELPRO Technologies may void the user’s authority to operate the device. -
Page 4: Important Notice
Systems should be designed to be tolerant of these operational delays. To avoid the risk of electrocution, the aerial, aerial cable, serial cables and all terminals of the 245U-E module should be electrically protected. To provide maximum surge and lightning protection, the module should be connected to a suitable earth and the aerial, aerial cable, serial cables and the module should be installed as recommended in the Installation Guide. - Page 5 Repairs, alterations, modifications undertaken other than by an authorized Service Agent. ELPRO liability under this warranty is limited to the replacement or repair of the product. This warranty is in lieu of and exclusive of all other warranties. This warranty does not indemnify the purchaser of products for any consequential claim for damages or loss of operations or profits and ELPRO is not liable for any consequential damages or loss of operations or profits resulting from the use of these products.
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Page 6: Table Of Contents
Default Configuration ............................23 Accessing Configuration for the first time....................... 23 Method 1 - Set PC to same network as 245U-E ....................23 Method 2 - Set 245U-E Network address to match the local network ............25 ........................27 ETWORK ONFIGURATION Network Settings Webpage Fields........................ - Page 7 ONFIGURATION 3.19 ........................58 ONFIGURATION XAMPLES Setting a 245U-E to Factory Default Settings....................58 Extending a wired network ..........................58 Connecting two separate networks together ....................58 Extending range of a network with a Repeater hop..................59 CHAPTER FOUR DIAGNOSTICS......................60 ..........................
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Page 8: Chapter One Introduction
See Appendix C for channels selections. The 245U-E unit also provides two serial connections as well as the Ethernet connections. It is possible to use all three data connections concurrently, allowing the 245U-E to act as a Device Server. Wireless connections can be made between serial devices and Ethernet devices. - Page 9 The first diagram shows a connection between two Ethernet devices using 245U-E ethernet modems. In this example one 245U-E is configured as an Access Point and the other as a Client - the Access Point can be connected. The second diagram shows an existing LAN being extended using 245U-E’s.
- Page 10 245U-E Wireless Ethernet User Manual Bridge vs Router Each 245U-E is configured with an IP address for the Ethernet side, and another for the wireless side. A Bridge connects devices within the same Ethernet network - for example, extending an existing Ethernet LAN.
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Page 11: Getting Started Quickly
First, read Chapter 2, “Installation”. The 245U-E requires an antenna and a power supply. Power the 245U-E and make an Ethernet connection to your PC (for further information on how to do this, refer to section 3.2 “Configuring the Unit for the first time”) ... -
Page 12: Chapter Two Installation
The 245U-E unit has two antenna connections at the top of the module, allowing for two antennas to be fitted to the module. The left connector (looking at the front) labeled “RX” by default is connected only to the internal wireless receiver and the right connector labeled TX/RX is connected to both the transmitter and receiver (**Note). -
Page 13: Line-Of-Sight Installations
Because the two connectors are separated, the RF signal at each connector will be different in the presence of multi-path fading. The 245U-E unit will automatically select the higher RF signal provided RX diversity has been enabled on radio config page. -
Page 14: Dipole And Collinear Antennas
245U-E Wireless Ethernet User Manual devices between the module and the antenna are recommended. If the antenna is not already shielded from lightning strike by an adjacent earthed structure, a lightning rod may be installed above the antenna to provide shielding. -
Page 15: Power Supply
The serial port is a 9 pin DB9 female and provides for connection to a host device as well as a PC terminal for configuration, field testing and for factory testing. Communication is via standard RS232 signals. The 245U-E is configured as DCE equipment with the pinouts detailed below. -
Page 16: Db9 Connector Pinouts
Ring indicator RS485 Serial Port The RS485 port provides for communication between the 245U-E unit and its host device using a multi-drop cable. Up to 32 devices may be connected in each multi-drop network. As the RS485 communication medium is shared, only one of the units on the RS485 cable may send data at any one time. - Page 17 Chapter Two 245U-E Wireless Ethernet Man_245UE_V1.5.doc Page 17...
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Page 18: Discrete (Digital) Input/Output
User Manual Discrete (Digital) Input/Output The 245U-E has one on-board discrete/digital I/O channel. This channel can act as either a discrete input or discrete output. It can be monitored, or set remotely, or alternatively used to output a communications alarm status. -
Page 19: Chapter Three Operation
When an Access Point starts up it will scan all available channels from the selected groups and then select the quietest similar to the 245U-E-G. It will then go into a scan mode for 60 seconds where it listens for any Radar signals. -
Page 20: Roaming Clients
245U-E Wireless Ethernet User Manual A Client monitors beacon messages from an Access Point to determine whether the link is still present. If the Client can no longer receive beacons from the Access Point it assumes the AP is out-of-range and the link is dropped. Whenever a Client is not connected to an AP, it will cyclically scan all available channels for a suitable AP. -
Page 21: Selecting Ahannel Chahannelnnel
Selecting a Channel 802.11b/g (2.4GHz) The 245U-E-G conforms to the IEEE 802.11b/g Wireless LAN specification. The 245U-E-G supports 13 radio channels, in the range 2412MHz to 2462MHz each channel is 22MHz wide with a channel separation of 5M. Only one of these channels is used for a connection. -
Page 22: 802.11A (5Ghz)
802.11a (5GHz) The 245U-E-A utilizes frequency bands within the range of 5.15 GHz and 5.825 GHz. This is broken into 4 distinct U- NII bands and each region (EU, US, AUS, NZ, etc) have their own power and operational constraints, see Appendix C for more details. -
Page 23: Configuring The Unit For The First Time
“straight-through” Ethernet cable between the PC Ethernet port and the 245U-E. The factory default Ethernet address for the 245U-E is 192.168.0.1XX where XX are the last two digits of the serial number (check the label on the back of the module). - Page 24 This option may be modified by opening Tools -> Internet Options -> Connections Tab -> LAN Settings->Proxy Server -> bypass proxy for local addresses. • Enter the default IP address for the 245U-E https://192.168.0.1XX where XX is the last two digits of the serial number. •...
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Page 25: Method 2 - Set 245U-E Network Address To Match The Local Network
245U-E is issued by ELPRO and matches the IP address 192.168.0.100. When you first connect to the 245U-E, your web browser will issue a warning that ELPRO is not a trusted authority. Ignore this warning and proceed to the configuration web page. To avoid seeing this warning in future, you can install the certificate into your browser. - Page 26 Tools -> Internet Options -> Connections Tab -> LAN Settings->Proxy Server -> bypass proxy for local addresses. • Enter the IP address for the 245U-E into the Internet Explorer Address bar e.g. http://10.10.0.6 which is the IP address you temporarily configured with the ifconfig command. •...
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Page 27: Network Configuration
LAN consult the network administrator. A system of 245U-E’s must have at least one Access Point configured as a master with one or more Clients. All 245U- E’s should be given the same System Address (ESSID) and Radio Encryption settings. For further information and examples on wireless network topologies refer section 1.1 “Network Topology”... -
Page 28: Network Settings Webpage Fields
MAC Address This is the unique hardware address of the 245U-E and is assigned in the Factory. The 245U-E has two MAC addresses, one for each interface (Ethernet and Wireless) The Ethernet MAC is the primary MAC Address. -
Page 29: Security Menu
WEP Encryption is selected. These keys should be the same for all 245U-E units in the same system. One of the four keys may be selected as the default key, and is used to encrypt transmitted messages from the configured unit. -
Page 30: Normal Operation
By default, the 245U-E is configured as a transparent bridge. When a transparent bridge is started, it learns the location of other devices by monitoring the source address of all incoming traffic. Initially it forwards all traffic between the... -
Page 31: Router Operation
Note: This rate is for Transmit messages only as radio can receive on all data rates. The 245U-E allows for a configurable fixed rate or an Auto radio transmission rate. When a fixed rate is configured the radio transmission rate is never altered, even under extremely poor conditions. The Auto rate will automatically change the radio data rate to give the best throughput. - Page 32 245U-E Wireless Ethernet User Manual Transmit Data Rate The radio baud rate in Mega (million) bits per second (Mbps) for point to point radio transmissions. The default value is Auto. Select a fixed rate to force the radio to use the selected rate.
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Page 33: Channel Selection
Chapter Three 245U-E Wireless Ethernet Channel Selection 245U-E-G modem (2.4 GHz 802.11b/g) channel selection is done by selecting one of the 13 channels from the drop down “Channel” list. 245U-E-A modem (5GHz 802.11a) channel selection is shown below. You can select an individual channel from the list keeping in mind that the channel will have some transmit and/or DFS constraints as indicated in Section 3.1 “Selecting a Channel”... -
Page 34: Throughput And Repeaters
This simplifies network administration, as there is no need to manually configure each device with a separate IP Address. The 245U-E is able to act as a DHCP client. To set the 245U-E to acquire its IP address from a DHCP Server, check the box “Obtain IP Address Automatically”... -
Page 35: Spanning Tree Algorithm / Redundancy
The 245U-E is configured with a Bridge Priority of 32768 by default. The intention is to reduce traffic that the 245U-E must handle, by placing it at the branch level in the network tree. As a branch, the 245U-E needs only pass traffic to devices that are its “leaves”. -
Page 36: Compatibility
You can see that there is now a fourth address that cannot be addressed using the 3 Address Mode of communications. i.e. Laptop, AP, Station #2 and Ethernet Device. The example shows the Access Point and the Station as both being 245U-E modules which will happily communicate as both support 4 Address Mode. - Page 37 (Note 2) Notes: 1. Connection only if the 245U-E-G is configured with a virtual Station (Client) which inturn connects to the 240U-E Access Point. 2. Connection indication in the “connectivity” pages however it is not a true connection (see “3 Address & 4 Address Modes”...
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Page 38: Multiple Ap Repeater Mesh Network
Alternatively, fixed AP to AP links can be configured for optimized throughput. Each 245U-E Access Point supports up to 10 separate interfaces for WDS links to other devices. Each WDS interface can be either a bridge or router interface (refer section 1.1 “Network Topology” for more information on bridge vs router). -
Page 39: 3.11.1 Example - Extending Range Using Wds
Chapter Three 245U-E Wireless Ethernet WDS Connections are made by adding one or more “Virtual Modules” to an Access Point (as illustrated in the diagram at the start of the section). Each virtual module can be configured with one of the standard wifi operating modes (Access Point or Station) or a non-standard Point to Point mode. -
Page 40: 3.11.2 Example - Roaming With Wds Access Points
245U-E Wireless Ethernet User Manual We specify the devices at the other end of the WDS links by SSID only –MAC addresses can be used to specify point- to-point links to third party devices which do not support meshing via SSID. - Page 41 Chapter Three 245U-E Wireless Ethernet To illustrate the redundancy, consider that if Site A needs to send data to Site D it has redundant paths through both B and C. However, due to the spanning tree protocol only one of B or C will relay the data, with the other taking over in the event of a failure.
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Page 42: 3.11.4 Example - Wds Routed Network
A consequence of using a different network address for the WDS link between Sites A and B, is that we now need to configure a routing rule at both Site A & B so that the 245U-E can determine where to send traffic... - Page 43 Site B; therefore, we wish to have the WDS interface link to Site D bridged with the default interface. Because we don’t specify a router IP address for the third entry the 245U-E automatically bridges this interface with the default wireless interface.
- Page 44 245U-E Wireless Ethernet User Manual WDS Connections: Connection Specify the connection mode for this link. AP (Downlink) configures the connection as a Mode virtual access point. Sta (Uplink) configures the connection as a virtual client. Point-to-point configures the connection as a fixed link.
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Page 45: Routing Rules
Routing Rules When a 245U-E receives an IP frame that is destined for an IP address on a different network, it checks if the network address matches the network address of one of its own interfaces (i.e. hard-wired Ethernet, or wireless Ethernet, or WDS) and forwards the frame appropriately. - Page 46 Devices on LAN B & LAN C that needs to send messages back to LAN A will need to have their Gateway addresses directed to the 245U-E on their respected networks. I.e. a LAN B device needs to send data back to LAN A. The Gateway address will need to be configured as 169.254.109.40 as this is the IP address of the wired side of the LAN B...
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Page 47: Wireless Message Filtering
Ethernet interface. ARP response packets will always be passed). When configuring a Whitelist it is important to add the Addresses of all devices connected to the 245U-E wired Ethernet port, that communicate over the wireless link. It is particularly important to add the Address of the configuration PC to the Whitelist. -
Page 48: Mac Address Filter Configuration
245U-E Wireless Ethernet User Manual MAC Address Filter Configuration: MAC addresses are uniquely assigned to each device and so can be used to permit or deny network access to specific devices through the use of Blacklists and Whitelists. In theory, MAC filtering allows a administrators to permit or deny network access to hosts associated with the MAC address, though in practice there are methods to circumvent this form of access control through address modification The MAC filter entry will match only the source MAC address in the packet. -
Page 49: Arp Filter Configuration
Chapter Three 245U-E Wireless Ethernet ARP Filter Configuration ARP (Address Resolution Protocol) is a broadcast message and is primarily used for finding a MAC address when only its IP or some other Network Layer address is known. On large networks, you generally tend to get a high proportion of broadcast messages. Using ARP filters is useful for reducing broadcast traffic on the wireless network by only allowing ARP requests for known units to pass, or blocking ARP requests for high use addresses. -
Page 50: Serial Port Configuration
RS232 or RS485 serial ports. PPP Server enables a network connection to the 245U-E over a serial cable. This is much like dial up internet. The maximum serial data rate is 115,200bps. Hardware or Software flow control may be selected. -
Page 51: Serial Gateway
Some of the possible Serial Gateway topologies are illustrated below. As can be seen, it is possible for serial data from a 245U-E to be transferred to one or more 245U-E serial ports, or to be encapsulated within a TCP/IP socket for availability on an Ethernet network. -
Page 52: Modbus Tcp To Rtu Gateway
There are software packages available (i.e. SerialIP Redirector by Tactical Software) that can create a virtual serial port on a PC. This virtual serial port can be configured to connect to a 245U-E serial port. Standard programs can then be used to access this serial port as if it were actually connected to the PC. -
Page 53: Serial Menu
Chapter Three 245U-E Wireless Ethernet Serial Menu RS232 / RS485 Serial Port Configuration Select the desired functionality. Select either PPP, Serial Gateway or Modbus TCP to RS232 Port The serial data rate desired. Serial data rates available range from 110bps to a Data Rate maximum of 115,200bps. -
Page 54: Digital Input/Output
Modbus TCP or RTU devices. The layout of the 245U-E I/O Registers is summarized in the table below. Each register is internally saved as a 16 bit unsigned integer value. A Modbus transaction may access the entire 16 bit value of any register, or alternatively the most significant bit of a register may be accessed as a discrete value. - Page 55 The 245U-E provides a configurable option to automatically reset the value of the onboard I/O registers to zero in the event of a communications failure. If a valid Modbus transaction directed to/from a given register has not been completed for longer than a configurable timeout, then the value of that register will be reset to zero.
- Page 56 B since the local Modbus TCP to RTU Gateway is to route the message out the serial port to unit A. Since the 245U-E supports Modbus TCP Client and Server simultaneously, the Modbus TCP Server for unit B above could also be enabled.
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Page 57: Module Information Configuration
245U-E. Take care to remember this password if you change it as it will be needed to access the module in future. Device Name A text field if you wish to label the particular 245U-E. This is also the DNS name (hostname) of the device if you are using DNS. Owner A text field for owner name. -
Page 58: Configuration Examples
Access Point Configuration Connect straight through Ethernet cable between PC and 245U-E. Ensure configuration PC and 245U-E are setup to communicate on the same network Set dipswitch to SETUP mode. Power up unit, and wait for the OK LED to cease flashing. -
Page 59: Extending Range Of A Network With A Repeater Hop
MS-DOS command ROUTE. For this example use: ROUTE ADD 169.254.102.0 MASK 255.255.255.0 192.168.0.200 LAN B Configuration All devices on LAN B should be configured so their gateway IP address is that of the 245U-E Access Point as 169.254.102.54 Access Point Configuration •... -
Page 60: Chapter Four
245U-E Wireless Ethernet User Manual Chapter Four DIAGNOSTICS Diagnostics Chart LED Indicator Condition Meaning GREEN Normal Operation RED Continuously Supply voltage too low. OR Internal Module Fault RED At Power On Boot Loader delay at start-up Fast Flash RED / GREEN... -
Page 61: Diagnostic Information Available
Chapter Four 245U-E Wireless Ethernet Diagnostic Information Available Connectivity The Connectivity webpage displays connections and available networks. The “Connected Devices” section displays the radio channel, received signal strength, and radio data rate for each Client or Access Point by their MAC Address. The readings shown are based upon the last received data message from the Access Point or Client. -
Page 62: Statistics
User Manual Statistics The Statistics webpage is used for advanced debugging of 245U-E. This webpage details the state of the 245U-E and performance information. This page is typically useful to ELPRO technical support personnel in diagnosing problems with the module. -
Page 63: Utilities
“ping” leaving a space and the default IP address for the 245U-E at first start-up. This command would be written as “ping 192.168.123.123” then <enter> to send the ping command. The PC will reply with an acknowledgement of your command and if your 245U-E is correctly configured your reply will look something like this. - Page 64 245U-E Wireless Ethernet User Manual This –t command is used to repeatedly ping the specified node in the network, to cancel use “Ctrl – C” A good test for the network once it is first set up is to use “ping” repeatedly from one PC’s IP address to the other PC’s IP address.
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Page 65: Ipconfig
PC. In this example it is the IP address of a PLC connected to the PC also. Arp –? lists all the commands available for this function. ”Route” Route is used for the Router function. This is where you are joining 2 different networks together via the 245U-E refer to Section 1.1 man_245UE_V1.5.doc... - Page 66 User Manual The 245U-E can only accept 1 Routing table. That is it can only accept one router per network of radios. On the Router radio network PC a routing rule needs to entered to allow access between Network A and Network B. This is entered in the command prompt as per all other instruction above.
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Page 67: Chapter Five
2 x Female SMA coaxial Two connectors for signal diversity or High gain receive antenna. Wireless data rate – 1 to 54Mb/s (245U-E-G), Turbo – 108Mb/s “Auto” function determines fastest rate possible configurable 6 to 54Mb/s 245U-E-A), Turbo – 108Mb/s... - Page 68 245U-E Wireless Ethernet User Manual Wireless data encryption WEP (64bit and 128bit), WPA-PSK (TKIP), WPA-PSK (AES), WPA2-PSK(AES), WPA-PSK/WPA2-PSK, WPA Enterprise User Configuration Via embedded web page via RS232 commands Diagnostics LED’s Power / OK, Ethernet Link, Activity, 100mb/s, Radio Link, RX, Rx Weak Signal, TX, Serial...
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Page 69: Appendix Afirmware Upgrade
Appendix A 245U-E Wireless Ethernet Appendix A FIRMWARE UPGRADE Determine which firmware version is present in the module to be upgraded by viewing the index webpage of the module. Firmware versions 1.0.3 and later may be upgraded via the configuration web pages. This upgrade can be done locally with a PC connected directly to the module, or remotely over a working radio link. -
Page 70: Appendix Bglossary
245U-E Wireless Ethernet User Manual Appendix B GLOSSARY Acknowledgment. Access Point An access point connects wireless network stations (or clients) to other stations within the wireless network and also can serve as the point of interconnection between the wireless network and a wired network. Each access point can serve multiple users within a defined network area. - Page 71 Appendix B 245U-E Wireless Ethernet so it can be safely shared among members of a network. WEP uses an encryption key that automatically encrypts outgoing wireless data. On the receiving side, the same encryption key enables the computer to automatically decrypt the information so it can be read. Encryption keys...
- Page 72 245U-E Wireless Ethernet User Manual Signal to Noise Ratio. The number of decibels difference between the signal strength and background noise. The power usually expressed in mW or dBm that the wireless device transmits at. Transmit Power MAC Address Media Access Control address. A unique code assigned to most forms of networking hardware. The address is permanently assigned to the hardware, so limiting a wireless network's access to hardware -- such as wireless cards -- is a security feature employed by closed wireless networks.
- Page 73 Appendix B 245U-E Wireless Ethernet messages to be transmitted to multiple networks (subnets) within an organization or worldwide. VoIP Voice Over Internet Protocol. Voice transmission using Internet Protocol to create digital packets distributed over the Internet. VoIP can be less expensive than voice transmission using standard analog packets over POTS (Plain Old Telephone Service).
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Page 74: Appendix Cchannels
245U-E Wireless Ethernet User Manual Appendix C CHANNELS 802.11b/g Frequency North Most of Channel Europe Australia Japan (MHz) America world 2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462 2467 2472 2484 .11b only 802.11b/g Turbo 2437 802.11a... - Page 75 Appendix C 245U-E Wireless Ethernet 5540 26 dBm 20 dBm 24 dBm 20 dBm 24 dBm 5560 26 dBm 20 dBm 24 dBm 20 dBm 24 dBm 5580 26 dBm 20 dBm 24 dBm 20 dBm 24 dBm 5600 26 dBm...
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Page 76: Appendix D 802.11A Tx Power Regulations
245U-E Wireless Ethernet User Manual Appendix D 802.11a TX Power regulations Band & EU & Frequency South Africa Australia New Zealand U-NII Frequency No DFS No DFS No DFS No DFS Band (MHz) 5150-5250 200 mW – 50 mW –... -
Page 77: Appendix Egnu Free Documentation Licence
Appendix E 245U-E Wireless Ethernet Appendix E GNU Free Documentation Licence Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. - Page 78 245U-E Wireless Ethernet User Manual Activities other than copying, distribution and modification are not covered by this License; they are outside its scope. The act of running the Program is not restricted, and the output from the Program is covered only if its contents constitute a work based on the Program (independent of having been made by running the Program).
- Page 79 Appendix E 245U-E Wireless Ethernet c) Accompany it with the information you received as to the offer to distribute corresponding source code. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form with such an offer, in accord with Subsection b above.)
- Page 80 245U-E Wireless Ethernet User Manual countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time.
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