Meter Engineers Handbook for Cellular
Contents
1. e to ial p e Shield SH to Shield SH Shark 200 and 200T Installation and Operation Manual V1 14 Pg 5 3 Hooking up multiple Shark meters to a single Digi TransPort WR21 Terminating resistors are only necessary on the last Shark meter No terminating resistor is needed at the Digi TransPort WR21 Lasi Stawe device N Sive device 1 Stove device 2 Twisted par shielded SH cable Twisted pair shielded SH cable Twisted par shieided SH cable Earth Connection preferably at single location Shark 200 and 200T Installation and Operation Manual V1 14 Pg 5 4 Digi TransPort WR21 Cable to Shark Meters Connect wires from WR21 together Pin on Shark Meter Connect wires from WR21 together Pin on Shark Meter WR21 Shark Meter Comm DB9 Male Meter Engineers Handbook for Cellular Communication 16 Mounting and Power Options for Various Dig TransPort Types WR21 WR41 WR44 in Metering Applications COMMON TO ALL DIGI TRANSPORT MODELS Digi TransPort routers are not designed to be exposed to the weather They must be installed in enclosures that are rated for at least IP66 Digi has a ready made unit called the Utility Communication Hub part number 70001699 that comes with a Digi TransPort WR21 pre mounted inside It s already IP66 certified and has the advantages of battery backup and a multi port switch if more than one Ethernet connection is needed It also has2. 16000837 16000836 16000838 16000839 76000855 16000856 16000857 DC BKT CWAN 16000775 16000840 16000787 24 While every reasonable effort has been made to ensure that this information is accurate complete and up to date all information is provided AS IS without warranty of any kind We disclaim liability for any reliance on this information All registered trademarks or trademarks are property of their respective owners Contact a Digi expert and get started today PH 877 912 3444 www digi com Digi International Worldwide HQ 11001 Bren Road East Minnetonka MN 55343 Digi International France 33 1 55 61 98 98 Digi International Japan oT o 54200261 Digi International Singapore ToS 2 a o Digi International China 86 21 5049 2199 f digi international t DigiDotCom tin digi international Copyright 2014 Digi International Inc All rights reserved 10 15 91002986
3. Meter Engineers Handbook for Cella gt Introduction When Digi began serving the utility industry Dire Straits Money for Nothing topped the Billboard charts the first cell phone was hitting the market weight 1 3lbs talk time 1hr and Ronald Reagan was president We ve come a long way since 1985 but the qualities that we started with dedicated engineering responsive tech support and an industry leading warranty are the same qualities that allow us to continue serving the largest investor owned utilities as well as the smallest rural electric cooperatives On the following pages we provide information on connecting common C amp l meters with Digi TransPort 3G and 4G LTE cellular routers as well as information on installation cabling and antennas Special thanks are due to Digi customers in meter shops across the world Thank you for sharing what you ve learned as you have used Digi product in the field We ve enjoyed writing this guide and we hope you ll find it useful If you notice anything outdated or think of something to add please send us an email Tony Chun Cellular Application Engineer tony chun digi com Andrew Lund Product Marketing Manager andrew lund digi com Meter Engineers Handbook for Cellular Communication 1 Table of Contents Section1 Cellular Communications for Commercial and Industrial Metering 3 Section2 Initial Setup and Configuration for
4. On the menus to the left just below the Home option you will see the Wizards option Click on Wizards and then choose the Carrier Switching Wizard Follow the directions in the Wizard and pick whichever carrier you ve chosen e Ifyou are using Verizon there is nothing else to do It might take 10 15 minutes but the Digi TransPort will self register and populate its APN If you are using AT amp T and some others then an APN must be manually entered here Configuration Network gt Interfaces gt Mobile Click on the button to Use custom APN instead of built in APN and enter the APN Check with your carrier as to what APN your particular SIM uses some common ones for AT amp T are broadband INTERNET and i2gold It may take 10 15 minutes for the Digi TransPort to register Meter Engineers Handbook for Cellular Communication 4 Connecting the Digi Transport to Common Electric Meters 3 1 Common Problems when Connecting to a Digi TransPort via the Ethernet Cable Turn off the Wi Fi on the laptop before connecting the Ethernet cable to the Digi TransPort The Wi Fi DHCP could also be using the 192 168 1 X network You may need to release your old IP address in order to acquire a new one from the Digi TransPort On a Microsoft Windows system you can do this by going to the command line Start gt Run gt cmd and entering ipconfig release followed by ipconfig renew 3 2 Connecting the Digi TransPort to Ethernet Capable Meters
5. All Meter Types In the Digi TransPort WebUI go to Configuration Network gt IP Routing Forwarding gt IP Port Forwarding Static NAT Mappings This is where you will define where to redirect the communications from the head end server Note that each meter IP and Port must be known A typical configuration is below IP addresses and Ports may differ depending on how the meter is set up Configuration Network gt IP Routing Forwarding gt IP Port Forwaerding Static NAT Mappings gt Dynamic ONS 7 IP Routing Forwarding Y IP Port Forwarding Static NAT Mappings Forward connections from external networks to the following internal devices In order to forward to an internal port an interface must have its NAT configuration set to IP address and Port you may configure up to 30 forwarding rules Forward to Forward to Internal Internal IP Address Port 2000 192 168 1 100 External External Min Port Max Port 2001 192 168 1 101 2002 192 166 1 102 gt Multicast Routes gt Virtual Private Networking VPN gt SSL After entering each rule hit the Add button When finished hit the Apply button and then click on the Save here button when it pops up Hit the Save All button when the new window pops up Meter Engineers Handbook for Cellular Communication 5 3 3 When using Static NAT Mappings the IP and Port on the cellular interface must be enabled By default only the IP port is NAT d Go here
6. RS 485 only 120 ohm termination resistor is not required at the Digi TransPort WR21 end of the cable The Digi TransPort WR21 has an internal termination resistor that is software selectable It is necessary at the meter end RS 485 Output Connections Switchboard RS 485 Output Connections Wht Grn Blu XMT RCV XMT RCV Wht Grn Blu XMT RCV 22 XMT RCV For Switchboard style meters the connections are provided on terminal blocks METER 1 METER 31 METER 32 muse SEMSTAR JEMSTAR METER jo METER o oo j i RS 485 MASTER Tx Rx TERMINATION RESISTOR RS 485 CONNECTION DIAGRAM JEMStar Digital Multifunction Electricity Meter User Manual Pub 1083 600 Rev S Pgs 50 55 Meter Engineers Handbook for Cellular Communication 14 4 1 Digi TransPort WR21 Cable to JEMStar AMETEK Meters Use pins if equiped with terminal block otherwise use free hanging wires Connect wires from WR21 together b ED White Green Blue Wire Data Connect wires from WR21 together 22 White Red Blue Wire Data WR21 JEMStar AMETEK Comm cable pinouts DB9 Male Free Hanging 2 twisted pairs Shark Meters Half Duplex two wire RS 485 communication only Shark 200 and 200T Installation and Operation Manual V1 14 Pg 5 2 Meter Engineers Handbook for Cellular Communication 15 Shark meter RS485 connections From other RS485 device z ee Connect a Seaee 2 Htt Py
7. or SMA RF connector on a pigtail coax cable to a bulkhead connector if you are going to use antennas external to the enclosure Power for the Digi TransPort WR44 can come from any 9 36V DC power supply capable of sourcing 1 5 amps In extreme high temperature environments you should choose a power supply that can source a higher current do to the typical de rating of most power supplies There is only one connector type for the high temperature version of the Digi TransPort WR44 It s a 4 pin locking Molex connector Digi has a DC power cord specific to the Digi TransPort WR44 part number 76000774 that can be connected to a power supply A typical good power supply is one similar to BEC Bobbintron Electrical Corp part number APO181 18U Mounting holes Screws oy 0 SIMCover must be Removed Ms rE Screw Hole PA whee ree a Wm Gee DON gt extn Bottom view of a Digi TransPort WR44 Meter Engineers Handbook for Cellular Communication 22 PRODUCT DESCRIPTIONS AND PART NUMBERS Digi TransPort 3G 4G LTE Cellular Routers Sample list Product Description Part Number Digi TransPort WR21 4G LTE 2 Ethernet 1 DB 9 RS 232 422 485 Enterprise VPN WR21 L52A DE1 TH Extended Temp AC Power Supply Digi TransPort WR41 4G LTE 2 Ethernet 1 DB 25 RS 232 422 485 Enterprise VPN WR41 L5S1 NE1 XH Extended Temp AC Power Supply Digi TransPort WR44 4G LTE 4 Ethernet 1 DB 25 RS 232 WR44 L5S1 CE1 XH Enterprise VP
8. Digi Transport WR21 WR41 and WR44 cece ccc cece cece cence ee eeeeeees 4 2 1 Common Digi TransPort Setup Procedures for all Meter Types ccc cece eee eee e ences 4 Section3 Connecting the Digi Transport to Common Electric Meters eeccecccees 5 3 1 Common Problems when Connecting to a Digi TransPort via the Ethernet Cale co case ireann erren Ea Oa ox vase aos bes EEEE FEE EEEE 5 3 2 Connecting the Digi TransPort to Ethernet Capable Meters All Meler IVES ls ucan cee canneoretoncyseaaaess ea heute ge aeugencaedaasees a sess ah coey sees ye 5 3 3 Connecting the Digi TransPort WR21 Model Only to Serial Meters ccc c cece eens 6 3 4 Connecting the Digi TransPort WR21 to RS 485 Meters cece cece e ene cence ene eeeneee 8 Section4 Pinouts of Various Meter Types ccc cece ccc c cece cece eee eeeeeeeeeeeees 8 A Gene 2G Mell ennea EEA ELE ARASEN as Ceeuentareuthassansentacrseencnandsnces ee 8 9 A2 Elster Metel S saad wares seeete cee erun Re EELNE EEEREN sed oqnesuemeteneeeereseaneseecus 10 4 3 Landis and Gyr MAXsys Elite Meters 0 cece ccc cece e eect e eee e teense eeeeneeeees 11 4 4 Schneider Square DION8650 Meters ccc cece eee ee eee eee eeeeeeees 12 13 4 5 ABB Elster Alpha Power Plus Meters ccc cece cece cee e eee e eee ee eee eeeeennenes 14 4 6 AMETEC Power Instruments JEMStar Meters cccsvecs voce dceerteecsernesevewewense 14 AT Sid WOON Ss se
9. a built in power supply rated for up to 277Vac Digi also has several integrator partners who specialize in weatherproof housing and auxiliary power solutions Most Digi TransPort models are designed for a wide temperature range 20 to 75 C typical so unless you expect extreme temperatures in your area there is no need to ventilate the enclosure A few inches of open space in an enclosure is usually sufficient to dissipate any heat If the enclosure you are using is RF transparent plastic you may be able to use the antennas that come with the Digi TransPort It really depends on how close you are to the carrier towers It s important that the antennas be at least 4 or 5 inches more is better from any metal object Metal has the effect of detuning the antenna You should also take care to mount it securely see options below and not to get too close to any exposed AC lines If you are using a metal enclosure or need higher gain antennas then what Digi can supply you ll need to use external antennas Generally the antennas can be mounted directly on the top of the enclosure but it might sometimes be necessary to mount them remotely you may need to mount them on a tall poll for instance to get better visibility to a tower Care must be taken to keep the coaxial cable length to a bare minimum Long cables introduce RF loss that can wipe out any advantages to remotely mounting the antenna A good rule of thumb is to keep the coaxial
10. in the WebUI of the Digi TransPort Configuration Network gt Interfaces gt Advanced gt PPP 1 Scroll down to the checked box Enable NAT on this interface and check the circle for IP address and Port Click on the Apply button and Save All Connecting the Digi TransPort WR21 Model Only to Serial Meters Most meters come equipped with RS 232 485 ports to enable communications The Digi TransPort WR21 serial port can be configured for either RS 232 or RS 485 The Digi TransPort WR21 comes defaulted for RS 232 communication 115200 baud Hardware flow control 8 n 1 To change these parameters go here in the Digi TransPort WR21 WebUI Configuration Network gt Interfaces gt Serial gt Serial Port 0 Check the user manual for the particular meter you re connecting too to see what these settings should be Here is the pinout of the RS 232 port RS 232 Port Pinout 1 Out DCD Data Carrier Detect 2 Out RXD Receive Data 3 In TXD Transmit Data 4 In DTR Data Terminal Ready 5 N A GND Ground 6 Out DSR Data Set Ready y In RTS Ready To Send 8 Out CTS Clear To Send 9 Out RI Ring Indicate The serial port needs to be set up as a Port the Digi TransPort WR21 can forward too To do this go here in the Digi TransPort WR21 WebUI Configuration Network gt Network Services In the ASY 0 Listening Port window type in the port you want to use By default this is port 4000 and it can be left as port 4000 In the following example it s been chan
11. Communications Option document IL42 4009D Pgs 2 3 Meter Engineers Handbook for Cellular Communication 10 Cable Pinouts to Connect Elster A3 Meters to the Digi TransPort WR21 RS 485 Serial Port Digi TransPort WR21 Cable to Elster A3 Meters Red R out Black R out Green T Cin Yellow T Cin WR21 A3 Meter DB9 Male RJ11 6 Pin Female Landis and Gyr MAXsys Elite Meters Meter Pinouts RS 232 2 3 4 amp RS 485 J2 DB25 Pinout Pinl NC Pin9 CTS RS 232 3 485A_IN Pin17 CL Pin2 TX RS 232 2 Pin10 TX RS 232 3 485A_OUT Pin18 Gnd Pin3 RX RS 232 2 Pin11 RTS RS 232 3 485A_OUT Pin19 RTS RS 232 4 485B_OUT Pin4 NC Pin12 NC Pin20 NC Pin5 CL Pin25 RX RS 232 3 485A_IN Pin21 R13 Pin6 NC Pin13 CTS RS 232 4 485B_IN Pin22 NC Pin Gnd Pin14 TX RS 232 4 485B_OUT Pin23 NC Ping NC Pin15 Gnd Pin24 NC Pin16 RX RS 232 4 485B_IN Used for RS 485 2 Wire Digi TransPort WR21 Cable to Elite Meters WR21 MAXsys Elite Meter DB9 Male J2 DB25 Female Meter Engineers Handbook for Cellular Communication 11 4 4 Schneider Square D ION8650 Meters The following illustration shows the connection to the communications card Back view of ION8650 Ethernet 10 100Base T RJ45 connector ANSI Type Il Magnetic Optical Communications Coupler on COM3 This port is located on the front panel Modem on COM2 RJ11 male connector Optical communications breakout cable for serial c
12. N Extended Temp AC Power Supply Digi TransPort WR44R 4G LTE 4 Ethernet 1 DB 25 RS 232 422 485 Enterprise VPN WR44 L5S1 CE1 RH Rugged Extended Temp AC Power Supply Accessories Product Description Part Number Cellular Magnet Mount Dual Band 4 0 dBi 1 cable DC ANT DBHG Cellular Direct Mount Penta Band 3 2 dBi 16000793 Antenna Cellular Surface Through Hole Mount Quad Band 3 15 dBi 16000847 Cellular Surface Through Hole Mount Quad Band 0 dBi 16000846 Ant ENE L Shaped Wall Mount 16 5mm Hole Compatibility 7600846 76000850 Mounting Bracket Digi has many different router options available please see www digi com and contact your Digi sales representative for more information Meter Engineers Handbook for Cellular Communication 23 Accessories cont Product Description Part Number Cable Adapter Mounting Bracket Other Locking Barrel to Bare Wire SMA Male to SMA Female 5m DB9 Female to DB9 Male 6 DB9 Female to DB25 Male 6 Straight Thru SMA Female to SMA Male TNC Female to TNC Male SMA Male to TNC Female SMA Female to TNC Male RJ45 to DB9 Female 6 RJ45 to DB25 Male 6 RJ45 to DB25 Female 6 Wall Mount Compatibility Digi Connect WAN Routers Wall Mount Compatibility Digi TransPort WR41 and WR21 1U Rack Mount Shelf SIM Card Cover Meter Engineers Handbook for Cellular Communication 16000732 16000830 16000858 16000871
13. cable at or less than 15 feet if you are using RG174 or RG58 Better coaxial cable like LMR400 for example can have longer runs But shorter is always better A NOTE ABOUT LTE In many 3G HSPA and EVDO networks routers are frequently deployed and configured with two antennas to achieve receive diversity The primary antenna transmits and receives while the secondary antenna is receive only With this configuration the router is better able to cope with multipath interference that occurs when signals bounce off obstructions e g buildings trees or airplanes and arrive at the antenna out of phase Two receive antennas placed where signals can be best received and combined can help counteract multipath interference Conversely LTE uses multiple input multiple output MIMO where both antennas transmit and receive While it is possible to use one antenna and operate the device in SISO mode two antennas are a better choice for optimum performance Using one antenna will cause bandwidth to vary based on the RF conditions at the operating site Application performance will also suffer sometimes cutting bandwidth as much as 50 percent Regardless best practices call for using directly attached antennas Meter Engineers Handbook for Cellular Communication 17 Evaluating Your Signal In 2G and 3G networks signal strength was best understood using the received signal strength indicator RSSI measured in dBm That value alone onl
14. ct tuce Goad E EES sen ocateeenaees te eaetaeapeaeenassan 15 16 Section5 Mounting and Power Options for Various Digi TransPort Types WR21 WR41 WR44 in Metering Applications ccceeeeeeeeeees 17 Section6 Evaluating Your Signal bicxdonciwesdon da eaeece nn neweveeadoeedreed wands See eae 18 Section7 Digi TransPort Model Specific Mounting Instructions eeeeceeceees 19 HA ION NanSFOIET WRZ eterno cde periret see cotesorccesurends ston ENEE eres conti ede EEA 20 TZ WANS OVE WVRA8 beet code ree ceees todpenteenest seen eceaearcesactrtutesaaeenssewenae 21 Ta IOV TAWSP OPW RA shot ese c ee sncee eaeeee eas ser eraaee eines ensue eee EANA 22 Product Descriptions and Part Numbers 0 ccc cece cece eee eect e eee eeeennees 23 24 Meter Engineers Handbook for Cellular Communication 2 Cellular Communications for Commercial and Industrial Metering Flexible and secure cellular routers connect remote C amp I meters with a utility s meter data management system for accurate billing and planning The utilities business is challenged from every angle to be increasingly productive and profitable The very nature of managing remote equipment in many locations can be difficult and expensive and maximizing uptime while reducing costs is often a requirement Meter shops face a growing set of demands more accurate and timely billing increased support for dispute resolution measurement of power quality and reactive
15. following table describes the RF conditions that each value range represents Meter Engineers Handbook for Cellular Communication 18 eseP aem seas smR gt 10 gt 20 Excellent gt 80 Good 80 to 90 10 to 15 13 to 20 Mid Cell 90 to 100 15 to 20 0 to 13 Cell Edge gt 100 gt 20 gt 0 For example a 4G LTE modem might report an RSSI of 68 dBm but RSRP 102 dBm RSRQ 16 dB SNR 1 8 dB In this case the signal quality is actually very poor This could be due to the device being some distance away from the LTE transmitter It s also possible that something is interfering with the signal such as a building or other obstructions between the device and the tower Ultimately poor signal quality equals poor performance due to issues such as retransmissions Not only does poor signal quality degrade performance it also adds cost to monthly data plans Digi TransPort Model Specific Mounting Instructions If you expect to mount the Digi TransPort router inside your own enclosure or inside the meter cabinet itself then use the mounting options described on the following pages Meter Engineers Handbook for Cellular Communication 19 1 Digi TransPort WR21 Two screw holes are on the bottom to mount the Digi TransPort WR21 Digi separately sells a bracket Part number 76000775 that fits over the Digi TransPort WR21 and has ears or tabs that make it easier to mount Note that to i
16. ged to port 2000 Meter Engineers Handbook for Cellular Communication 6 Configuration Network gt Network Services rasaveutu Confirm password Enable Realport TCP Port Enable Encrypted Realport TCP Port Enable Network Management Protocol SNMP UDP Port 4i Enable SNMP vi 7 Enable SNMP v2c i Enable SNMP v3 Enable Simple Network Time Server SNTP Source Enable Secure Shell Server SSH SFTP Enable FTP Server Enable HTTP Server Enable HTTPS Server Enable Teinet Server Enable Teinet ower SSL Server Enable RCI over HTTP ASY 0 Listening Port ASY 1 Listening Port ASY 2 Listening Port ASY 3 Listening Port ASY 4 Listening Port ASY 5 Listening Port ASY 6 Listening Port ASY 7 Listening Port ASY 8 Listening Port ASY 9 Listening Port Now redirect incoming communications to this port by using the port forwarding rules Go here in the WebUI Configuration Network gt IP Routing Forwarding gt IP Port Forwarding Static NAT Mappings Add the rule to forward to the serial port as below Configuration Network gt IP Rowting Forwarding gt IP Port Forwarding Static NAT Mappings v Interfaces gt Ethernet gt Mobile gt GRE gt Serial gt Advanced gt DHCP Server gt Network Services gt DNS Servers gt Dynamic ONS Y IP Routing Forwarding gt IP Routing gt Static Routes gt RIP gt OSPF gt BGP Y IP Port Forwarding Static NAT Mappings Forward connections from external networks
17. ng Holes Rubber Feet can be Bottom view of a Digi TransPort WR21 Meter Engineers Handbook for Cellular Communication 20 1 2 Digi TransPort WR41 Two screws are on the bottom to mount the Digi TransPort WR41 These are the screws that hold the top of the case to the bottom These screws need to be removed and the holes can then be used for mounting Digi also has a bracket Part number 76000775 same as the one for the Digi TransPort WR21 above that fits over the WR41 and has ears or tabs that make it easier to mount Note that to install this bracket the four rubber feet must be removed They are easily pried off with a flathead screw driver Digi also has a SIM cover Part number 76000787 again the same as the Digi TransPort WR21 that prevents anyone from removing the SIM card Dimensions of the Digi TransPort WR41 are 120mm x 173mm x 32mm LxWxH Note that you should choose an enclosure that allows enough room to connect the power connector Ethernet cables and or the serial cable and the antennas or SMA RF connector on a pigtail coax cable to a bulkhead connector if you are going to use antennas external to the enclosure Power for the Digi TransPort WR41 can come from any 8 48V DC power supply capable of sourcing 1 5 amps In extreme high temperature environments you should choose a power supply that can source a higher current do to the typical de rating of most power supplies There is only one connect
18. nstall this bracket the four rubber feet must be removed They are easily pried off with a flathead screw driver Digi also has a SIM cover part number 76000787 that prevents anyone from removing the SIM card Dimensions of the Digi TransPort WR21 are 100mm x 131mm x 32mm L x W x H Note that you should choose an enclosure that allows enough room to connect the power connector Ethernet cables and or the serial cable and the antennas or SMARF connector on a pigtail coax cable to a bulkhead connector if you are going to use antennas external to the enclosure Power for the Digi TransPort WR21 can come from any 9 30V DC power supply capable of sourcing 1 5 amps In extreme high temperature environments you should choose a power supply that can source a higher current do to the typical de rating of most power supplies There are two types of connectors that come on a Digi TransPort WR21 depending on which model you order There is a 2 1mm locking barrel connector type and a more industrial Phoenix connector that has screw down leads Digi can supply high temperature power supplies for either option Part number 76000752 for the barrel type and 76000736 with bare leads that can be used with the Phoenix connector type SIM Cover Screw Hole Se a LP CS OR ae Ra ae nak iaaiiai Unie 4 l q st we Pye At apas gt l pple beats ahi gedaan TeV gt ii DN ae abs f Ei d i a to e imately r EA a nper Km ee 7 Mounti
19. ommunications Ordered separately COM1 RS 232 or RS 485 COM4 RS 485 Meter Engineers Handbook for Cellular Communication Communications wiring on breakout panel Communications wiring on switchboard IRIG B GPS Time Synchronization Serial COMs and Expanded I O Molex Micro Fit 24 pin male connector Optical I O Expander for serial communications and expanded I O Ordered and shipped separately Serial COMs COM1 RS 232 or RS 485 COM4 RS 485 PowerLogic ION8650 Energy and power quality meter User guide Pg 84 12 Molex male from the meter Two RS 485 twisted pairs female connector RS 485 shield PowerLogic ION8650 Energy and power quality meter User guide Pg 93 Cable Pinouts to Connect Schneider ION8650 Meters to Digi TransPort WR21 Digi TransPort WR21 Cable to ION8650 Meters RS 485 Half Duplex Connect wires from WR21 together b Black Wire Data Connect wires from WR21 together White Wire Cor Red if using com 4 WR21 Schneider 8650 Comm DB9 Male Free Hanging 2 twisted pairs White Black pair are com 1 and Red Black pair are com 2 Meter Engineers Handbook for Cellular Communication 13 4 5 ABB Elster Alpha Power Plus Meters Identical to Elster A3 Meters in section 5 1 Requires optional RS 485 communications board 4 6 AMETEC Power Instruments JEMStar Meters Requires the optional RS 485 board Half Duplex two wire
20. or type for the high temperature version of the Digi TransPort WR41 It s a 4 pin locking Molex connector Digi has a high temperature power supply specific to the Digi TransPort WR41 part number 76000790 SIM Cover Screw Hole Model Type TransPort WRA1 U eee gt lt FOM Gwent G HW Options Www p eib ripio Sh e8844 Tuns US Ant enn anew Pu WA4 800 BABU gme 391 IROA 08 oon eee Rubber Feet Removed pamaine Psn i Mounting Holes Screws need to be Removed Bottom view ofa Digi TransPort WR41 Meter Engineers Handbook for Cellular Communication 21 0 3 Digi TransPort WR44 Two screws are on the bottom to mount the Digi TransPort WR44 These are the screws that hold the top of the case to the bottom These screws need to be removed and the holes can then be used for mounting Digi also has a bracket part number 76000778 that fits over the Digi TransPort WR44 and has ears or tabs that make it easier to mount Note that to install this bracket the four rubber feet must be removed They are easily pried off with a flathead screw driver Digi also has a SIM cover specific to the Digi TransPort WR44 part number 76000785 that prevents anyone from removing the SIM card Dimensions of the Digi TransPort WR44 are 145mm x 210mm x 40mm LxWxH Note that you should choose an enclosure that allows enough room to connect the power connector Ethernet cables and or the serial cable and the antennas
21. power and support for measuring the cost of power delivery To meet these demands metering professionals need a cellular router that e Supports multiple Ethernet and serial devices e Can be preconfigured for easy installation by field technicians e Is certified on Sprint Verizon AT amp T Rogers and Telus e Offers the high security features required by NERC CIP Digi TransPort routers fit the bill They are secure dynamic routing VPN and firewall support carrier agile supporting Sprint Verizon and AT amp T on one platform and flexible with Ethernet RS232 485 GPS USB and analog digital 10 Learn more at www digi com transport Digi s Solutions for the Utility Industry Problem Solution Under the glass cellular enabled meters Digi TransPort routers offer several mounting can t be moved to improve reception and antenna options Meter shops must support a mix of new and legacy Digi TransPort cellular routers have Ethernet and serial equipment with diverse protocols and physical interfaces ports proven compatibility with common MDM systems and support for DNP and Modbus No way to confirm proper communication between a Digi TransPort routers can be pre configured to double meter and router check communication and green light the installation Complicated installations require training and Pre assembled weatherproof Utility Communication Hub documentation simplifies installation Expensive and complica
22. ted to support a piecemeal Digi offers a single source for all warranty solution with products from and support concerning the Utility many vendors Communication Hub Meter Engineers Handbook for Cellular Communication 3 2 1 Initial Setup and Configuration for Digi Transport WR21 WR41 and WR44 Common Digi TransPort Setup Procedures for all Meter Types PRE CONFIGURATION OF DIGI TRANSPORT Required equipment for this configuration e Digi TransPort WR21 WR41 or WR44 e Computer or laptop e Ethernet cable e SIM and data plan purchased from a carrier Verizon ATT etc CONNECTING TO THE CARRIER Insert the SIM into SIM 1 slot on the front of the Digi TransPort and screw on both WWAN antennas Connect the Ethernet cable to port 0 of the Digi TransPort some models only have one Ethernet port Connect the Ethernet cable to the laptop Power on the Digi TransPort Open a browser on the laptop i e Internet Explorer Firefox Chrome etc In the URL window type 192 168 1 1 The default configuration of the Digi TransPort has the DHCP turned on so the laptop will be given an IP address automatically The built in WebUI of the router should now be displayed see section 1 2 for common problems if you aren t able to connect When the login screen comes up type in the username and password The default username and password is username and password all lower case After login you will go immediately to the Home screen
23. ters to Digi TransPort WR21 Digi TransPort WR21 Cable to KV2 Meters Red R out Black R out Green T Cin Yellow T in WR21 KV2 Meter DB9 Male RJ11 Connector Meter Engineers Handbook for Cellular Communication 8 Terminating resistors are only needed at the last meter if multiple meters are connected A non terminating resistor is needed at the Digi TransPort WR21 RS 485 Host AS 185 card AS232 RAS 185 converter Multiple Serial Port or Ethernet Gateway AS 485 port rv l Network Connections Shield AS 165 120 ohm terminating resistor Connect Tech AS 485 cards require a 6O0 orm resistor in place of the 120 ohm terminating resistor Two wire twisted shielded pair cable MODBUS Cable Connector Wiring AS 485 ED 41 A i Shield not a connected RX BLK 5 Ca at first IED COM WHT 6 kKVikV2 MODSUS Cable MODBUS RJ 11 termination Connector Shield nat connected at IEC RAS 485 IN rs Shield 2 120 0hm terminating resistor Modbus Communications Option document GEH 7282 Pgs 43 46 Meter Engineers Handbook for Cellular Communication 9 4 2 Elster A3 Meters Requires optional RS 485 communications board Connection leads with RJ 11 termination RJ 11 Connections Black Receive Red Receive Green Transmit Yellow Transmit Controller Reader Transmit Transmit Receive Receive Modbus
24. to the following internal devices In order to forward to an internal port an interface must have its NAT configuration set to IP address and Port you may configure up to 30 forwarding rules forward to Forward to Internal Internal IP Address Port txternal External Min Port Max Port 2000 192 168 1 101 2000 Delete Add Ensure that NATing is applied on both IP address and Port by going here Configuration Network gt Interfaces gt Advanced gt PPP 0 Make sure the IP Address and Port circle is checked under the Enable NAT on this interface check box Meter Engineers Handbook for Cellular Communication 7 3 4 Connecting the Digi TransPort WR21 to RS 485 Meters Similar to the RS 232 instructions set up the Listening Port and the Port Forwarding rules and ensure the IP Address and Port are enabled for PPP 1 interface For pinouts from the various types of meters to the DB9 of the Digi TransPort WR21 see below in section 4 The DB9 of the Digi TransPort WR21 is software selectable for either RS 232 or RS 485 To configure it for RS 485 communication go here in the WebUI Configuration Network gt Interfaces gt Serial gt Serial Port 0 Drop the Advanced tab down and in the Async Mode box select RS 485 Terminating resistors are software selectable if needed there is no need to put external terminating resistors in place Pinouts of Various Meter Types 4 1 GEKV2C Meters Cable Pinouts to Connect KV2 Me
25. y provides a measure of the total signal including noise and of course noise degrades the performance of a cellular connection For example a cellular router installed in an electric substation may pick up a strong cellular signal but it will still perform poorly due to electromagnetic interference That s why it s important to understand not only the strength of the signal but also its quality Most 2G 3G CDMA and WCDMA i e UMTS HSPA devices also report Ec lo which is a better indicator of signal quality However this metric is less commonly used and not as well understood as RSSI For 3G cellular connections RSSI and Ec lo determine signal quality RSSI Signal Strength Signal Quality gt 70 dBm Excellent 0 to 6 Excellent 70 dBm to 85 dBm Good 7 to 10 Good 86 dBm to 100 dBm Poor 11 to 20 Fair to Poor With 4G LTE operators can now take advantage of three new metrics to help indicate when the device has received a good LTE signal Reference Signal Received Power RSSP indicates the signal strength and is roughly analogous to RSSI Reference Signal Received Quality RSRQ describes the signal quality and is similar to Ec lo Signal to Interference and Noise Ratio SINR also called SNR indicates the throughput capacity of the channel As the name implies SINR is the strength of the signal divided by the strength of any interference These parameters may vary depending on the technology being used The
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