Westermo RM-90 Reference Manual Download Page 48

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6193-3201

General

Expected line-of-sight
range

USA / Canada

Australia / NZ

Range based on 19200
baud

Range may be extended
using intermediate
modules as repeaters.

20+ miles @ 4W ERP

20+ km @ 1W ERP

depending on local
conditions

60+ miles can be achieved in
low RF noise environments
@ 0.1W with 16dB antennas

Note: only 6dB gain is
permitted in USA/Canada

Antenna Connector

Female SMA coaxial

Wireless data rate (bit/
sec) – configurable

19200, 38400, 100000,
200000

“Auto” function determines
fastest rate within user-con-
figured fade-margin

Serial Ports

RS-232 Port

DB9 female DCE

RTS/CTS/DTR/DCD
hardware signals provided

RS-485 Port

2 pin terminal block

Max distance 4000’ / 1.2 km

Data rate (bit/sec)
– configurable

1200, 2400, 4800, 9600,
14400, 19200, 38400,
57600, 76800, 115200

Byte format

7 or 8 data bits

Stop/start/parity bits
configurable

System Parameters

System address

255 word string

Wireless data encryption

None, 64-bit proprietary
or 128-bit AES

User Configuration

Via embedded web page

Via RS-232 commands

Diagnostics

LED’s

OK, DCD,

Radio and Serial RX/TX

Low signal receive led

RSSI measurement in
dBm

BER test

Summary of Contents for RM-90

Page 1: ...Wireless Ethernet Radio Modem www westermo com Westermo Teleindustri AB 2006 Reference Guide 6193 3201 RM 90...

Page 2: ...2 6193 3201 Thank you for your selection of the RM 90 Wireless Ethernet Modem We trust it will give you many years of valuable service...

Page 3: ...re requirements in section 1 1310 of the FCC Rules antennas used with this device must be installed to provide a separation distance of at least 20 cm from all persons to satisfy RF exposure complianc...

Page 4: ...antenna cable combinations as specified below WESTERMO Antenna Part Antenna Gain Cable Options No Cable CC10 900 CC20 900 WH900 2dBi OK N A N A DG900 2dBi OK N A N A CFD890EL 0dBi OK N A N A SG900EL 5...

Page 5: ...echnologies first 1 A radio license is not required in some countries provided the module is installed using the aerial and equipment configuration described in the RM 90 Installation Guide Check with...

Page 6: ...al port using PPP point to point protocol PPP allows the RM 90 to connect serial communications into the Ethernet network Access Point vs Client The Access Point unit acts as the wireless master unit...

Page 7: ...IP address for the wireless side is the same as the Ethernet side A Router connects devices on different LAN s The IP addresses for the Ethernet and wireless sides are dif ferent In the above example...

Page 8: ...t read Section 2 Installation The RM 90 requires an antenna and a power supply Power the RM 90 and make an Ethernet connection to your PC for further informa tion on how to do this refer to section 3...

Page 9: ...e degree of radio interference and obstructions such as hills or trees to the radio path Typical reliable distances for 1W transmit power are USA Canada 15 miles 6dB net gain antenna configuration per...

Page 10: ...s of antennas suitable for use It is important antenna are chosen carefully to avoid contravening the maximum power limit on the unlicensed channel if in doubt refer to an authorized service provider...

Page 11: ...a transmits the same amount of radio power in all directions as such that are easy to install and use The dipole antenna with integral 15 cable does not require any additional coaxial cable however a...

Page 12: ...d exactly in the direction of transmission to benefit from the gain of the antenna The Yagi antennas may be installed with the elements in a vertical plane vertically polarized or in a horizontal plan...

Page 13: ...at 24VDC 2 4 Serial Connections 2 4 1 RS 232 Serial Port 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...

Page 14: ...ts on the RS 485 cable may send data at any one time Thus communication protocols based on the RS 485 standard require some type of arbitration RS 485 is a balanced differential standard but it is rec...

Page 15: ...3 3201 HJEEAN GH 9 E HL I8 DG DHI DHI GB I GC I 9 D 9 6JAIH 9 E HL I8 GH XdccZXi dc jh c iZgb cVi c gZh hidg GH 100M RUN SETUP LINK MDI X ETHERNET DCE ON OFF RS 485 RMINATION RS 232 RS 485 COM T T DTO...

Page 16: ...ntain reliable operation of driving relays The digital input is connected between the DIO terminal and common COM The I O circuit includes a LED indicator which is lit when the digital input is active...

Page 17: ...d perhaps from an Access Point If the Client finds suitable Access Points during the scan it will then attempt to establish a link with the Access Point with the strongest radio signal Link Establishm...

Page 18: ...ink After a Client has reset it s Link status it will start scanning for an Access Point as if it has just started up LED Indication The following table details the status of the indicating LEDs on th...

Page 19: ...ccessing Configuration for the first time There are two methods for accessing the configuration inside a RM 90 The first method requires changing your computer settings so that the configuring PC is o...

Page 20: ...b Connect the RS 232 port on the RM 90 to the RS 232 port on the PC using a straight through serial cable c Open a terminal package such as Hyperterminal with 19200bps data rate 8 data bit 1 stop no p...

Page 21: ...ecessary for the majority of applica tions A Quick Start configuration is provided for simple networks This is the first stage of the module configuration For most applications no further configuratio...

Page 22: ...p sets are automatically selected to minimize any radio interference from other RM 90 systems The System Generator String should be a unique data string for example BLUEpencil93 The same System Genera...

Page 23: ...dant wireless links are being used This is explained in Section 3 9 MAC Address This is the unique hardware address of the RM 90 assigned in the Factory For the majority of systems this item should no...

Page 24: ...4 bytes for 128 bit AES encryption These keys must be entered as hexidecimal numbers separated by colons For example 12 AB EF 00 56 for 64bit encryption and 12 AB EF 00 for 128bit AES encryption Encr...

Page 25: ...dundant wireless links may be set up by using the Spanning Tree Algorithm function refer to section 3 9 Router Operation A router joins separate Ethernet networks together The router has different IP...

Page 26: ...et is In countries which only allow a sub set of the 902 928 MHz band there is only one group of frequencies and it is not possible to separate systems in this way because the band is smaller and all...

Page 27: ...has an impact on the maximum size of packet that may be transmitted Refer to Fragmentation Threshold for more information The default value is 400 milliseconds Beacon Period This interval is the peri...

Page 28: ...hernet traffic is only small packets sizes ie 300 bytes an improvement in overall through put rate can be achieved by reducing MTU size This improvement is achieved through a reduc tion in the retry h...

Page 29: ...a time such as a master device polling slave devices there is some advantage in overall system speed by set ting the Contention Window Size low to perhaps 1 or 2 Apply Changes Update settings Apply Ch...

Page 30: ...wireless transmissions and enhance security The RM 90 may be configured to reject or accept messages to and from certain Addresses To accept wireless messages from particular devices a Whitelist of Ad...

Page 31: ...ask 255 255 255 0 with the radio and filter disabled The XX in the IP address is the last two digits of the serial number Configuration webpages will still show the original configuration No changes a...

Page 32: ...AC Address translation table entry i e whenever the device may need to send an ARP request to determine the MAC address of a device with a known IP Address An ICMP filter is needed to allow disallow p...

Page 33: ...rial baud rate 38400bps Hardware flow control Local address 192 168 123 123 Remote address 192 168 123 124 To configure Windows XP to establish a PPP connection to a RM 90 in SETUP mode fol low these...

Page 34: ...e module will automatically attempt to connect to the specified remote server Some of the possible Serial Gateway topologies are illustrated below There are software packages available i e SerialIP Re...

Page 35: ...y Enter the TCP port number on which the server must listen for incoming con nections The standard TELNET port is 23 Client When configured as Client the module will automatically attempt to connect t...

Page 36: ...e RS 485 Modbus TCP to RTU Gateway Check this box to enable the Modbus TCP to RTU Server on the RS 485 port Only a single serial port is allowed at a time Data Rate The serial data rate desired Serial...

Page 37: ...configuration is viewed and changed in a web format which is an Ethernet application you can view or change the configuration of a remote module via the wireless link provided the remote module is alr...

Page 38: ...on PC and RM 90 are setup to communicate on the same network Set dipswitch to SETUP mode Power up unit and wait for LINK led to cease flashing Adjust PC network settings Set Configuration PC network c...

Page 39: ...to RUN i Reset RM 90 with reset command j Open configuration webpage with Internet Explorer at address http 192 168 0 200 When prompted for password enter default username user and password user Ente...

Page 40: ...itch to SETUP Power up unit and wait for LINK led to cease flashing Adjust PC network settings Set Configuration PC network card with network setting of IP address 192 168 0 1 netmask 255 255 255 0 Op...

Page 41: ...er a System Generator String Select the Radio Encryption required Set dipswitch to RUN Save the changes and unit will reset Wait for unit to complete reset Open configuration webpage with Internet Exp...

Page 42: ...lash Serial Port Receiving CTS low LAN ON Link Established on Ethernet port LAN Flash Activity on Ethernet port Serial GREEN flash RS 232 Serial Port Activity Serial RED flash RS 485 Serial Port Activ...

Page 43: ...s receiving a valid status from This sending units identity is shown as its MAC address for that unit The graph is a represen tation of the RSSI and indicates the value of this RSSI on each of the 50...

Page 44: ...al is strong enough a link may be established and the Connectivity webpage of the Access Point may be opened If the link is weak the LINK led will go out and the remote Connectivity webpage of the Acc...

Page 45: ...en pinged this can be used to see the IP address MAC address of the remote computer It will also show any other devices on the network that it may be connected to The command used is Arp a It shows th...

Page 46: ...255 255 0 In the Network A PC a routing rule is to be set This will allow Network A B to have access to each other This is entered under cmd prompt Route ADD 192 168 2 0 MASK 255 255 255 0 192 168 0...

Page 47: ...nd TX Radio RX and TX Link Operating Temperature 40 to 140 degrees F 40 to 60 degrees C 0 99 RH non condensing Power Supply Nominal supply 10 to 30VDC Overvoltage and reverse voltage protected Current...

Page 48: ...0 Auto function determines fastest rate within user con figured fade margin Serial Ports RS 232 Port DB9 female DCE RTS CTS DTR DCD hardware signals provided RS 485 Port 2 pin terminal block Max dista...

Page 49: ...00P_x x bin gz and firmware application file epm_RM90_x x bin gz using the Browse buttons in the FlashUpdate program 6 Connect PC to RM 90 RS 232 serial port with straight though serial cable 7 Select...

Page 50: ...he signals crossover If an eight wire cable was being used for instance the signal would start on pin one at one end of the cable and end up on pin eight at the other end They cross over from one side...

Page 51: ...servers The program works behind the scenes to facilitate surfing the Web with alpha versus numeric addresses A DNS server converts a name like mywebsite com to a series of numbers like 107 22 55 26 E...

Page 52: ...as more than 300 000 members and is involved with setting standards for computers and communications Infrastructure mode A client setting providing connectivity to an AP As compared to Ad Hoc mode whe...

Page 53: ...provides connection serv ices similar to TCP IP ISA 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...

Page 54: ...k s MAC table will be able to get onto the network NAT Network Address Translation A network capability that enables a houseful of computers to dynamically share a single incoming IP address from a di...

Page 55: ...ay Each individual wireless LAN will probably use the same subnet for all the local computers it talks to Switch A type of hub that efficiently controls the way multiple devices use the same network s...

Page 56: ...ferred over the Internet VPN can work with either wired or wireless networks as well as with dial up connections over POTS VPN creates a private encrypted tunnel from the end user s computer through t...

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Page 60: ...80 01 info westermo se Westermo OnTime AS Gladsvei 20 0489 Oslo Norway Phone 47 22 09 03 03 Fax 47 22 09 03 10 E mail contact ontimenet com Westermo Data Communications Ltd Talisman Business Centre D...

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