Helmholz REX 100 WiFi User manual

Quick Start Guide REX 100 WAN|WiFi
www.helmholz.de
Version
en
from FW 1.9.0
3

Quick Start Guide REX 100 WAN|WiFi
2
Contents
1. Introduction 3
2. Preparing the REX 100 unit 3
3. Access to the myREX24 V2 portal 4
4. InitialroutercongurationviathemyREX24V2portal 6
5. Routercongurationtransferoptions 8
6. Establishing a VPN connection to your REX 100 17
7. Tips and tricks 18
8. Remote maintenance of Ethernet CPUs 20
9. Description of LEDs and buttons 21
10. Restoring the REX 100 router to its default settings 21
11. Loadconguration/rmwareupdatefromUSBstick 22
12. Technical data 23
Notes:
The contents of this Quick Start Guide have been checked by us so as to ensure that they match the hardware and software described. However, we assume no liability for any existing
differences, as these cannot be fully ruled out. The information in this Quick Start Guide is, however, updated on a regular basis.
When using your purchased products, please make sure to use the latest version of this Quick Start Guide, which can be viewed and downloaded on the Internet at www.helmholz.de.
Our products contain, among others, open source software. This software is subject to the applicable licensing conditions. We will send you the appropriate licensing conditions,
including a copy of the complete licensing text, together with the product. These are also available in our download area of the respective product under www.helmholz.de. We also
offer to send you or any third party the complete source code of the applicable open source software as a DVD upon request for a contribution towards costs of 10.00 Euro. This offer
is valid for a period of three years as of the delivery of the product.
Our customers are important to us. We are pleased to receive suggestions for improvement and new impulses. If you have any questions about the use of the product, please contact
Helmholz Support by phone or send an e-mail to [email protected].
1) SIMATIC and STEP 7 are registered trademarks of Siemens AG.
2) Windows is a registered trademark of the Microsoft Corporation.

Quick Start Guide REX 100 WAN|WiFi
3
1. Introduction
The REX 100 is an industrial router suitable for worldwide remote access to IP-en-
ableddevices(PLCs,HMIs,IPcameras,etc.)ItismountedontheDINrail.
ThisQuickStartGuideexplainsthebasicsettingsinthemyREX24portalandshows
howtotransferthecongurationmadetheretotheREX100unit.
Important advance information: Please use the most current version (as of v3.7.0) of
the dial-up software “shDIALUP” for commissioning. You can acquire it as a download
at www.helmholz.de.
The current rmware must be installed on all REX 100 routers for successful connection
with the myREX24 V2 portal. Write down the serial number and MAC address of your
REX 100 router before installing the router in your system. You will need the serial num-
ber in order to congure the REX 100!
2. Preparing the REX 100 unit
2.1 REX 100 WiFi
Connect a WiFi-compatible antenna and ensure that a radio connection to a WLAN
accesspoint(e.g.DSLmodem)ispossible.Antennasareavailableseparatelyas
accessories.
TheLANportsP1toP4areavailableforconnectiontothemachinerynetworkand
forcommissioningviaPC.TheyarealsoactivewhentheREX100routerhasno
connection with the Internet.
2.2 REX 100 WAN
ConnecttheWANportoftheREX100(P1WAN)tothenetwork/routerorDSL
modem being used to establish the Internet connection. The LAN ports P2 to P4 are
availableforconnectiontothemachinerynetworkandforcommissioningviaPC.
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
WLAN Accesspoint
Ext.V DC
18...30 V
- + FE
PWR
RDY
CON
USR
FCN
USB
IN1 IN2
RST
P1 WANP2 LANP3 LANP4 LAN
SN: 1234567890
Ext.V DC
18...30 V
- + FE
PWR
RDY
CON
USR
FCN
USB
IN1 IN2
ANT
RST
P1 LAN P2 LANP3 LANP4 LAN
SN: 1234567890
Ethernet
Ethernet
Ethernet

Quick Start Guide REX 100 WAN|WiFi
4
2.3 Connection
The REX 100 must be supplied with 24 V DC at the wide range input 18 – 30 V DC
viatheprovidedconnectorplug.
Theterminal(FG)isforthefunctionalground.Connectthiscorrectlywiththerefer-
ence potential.
2.4 Digital inputs IN1 and IN2
Thealarminputscanbeactivatedwithpotential-freeswitches,buttonsorrelay
contacts.E-mailrecipientswhoneedtobenotiedareconguredandactivatedvia
thealarmmanagementinthemyREX24V2portal.Dependinguponthesetting,itis
possibletoinitiatetheestablishingofaconnectiontothemyREX24V2portalviaIN1.
The use of these functions is optional.
ThegreenPWRLEDlightsupwhenthesupplyvoltageisswitchedon.Thebootpro-
cessstartsfollowingtheinternalsystemcheck(durationofapprox.25sec.),which
isindicatedbytheblinkingRDYLED(forapprox.90sec.).TheREX100isreadyfor
operation as soon as the RDY LED lights solid.
3. Access to the myREX24 V2 portal
REX100routerscanbefullyconguredusingthemyREX24portal.Asecureconnec-
tion with the portal is required to this purpose:
-ForcompletehardwareprojectplanningofaREX100router,theremoteclient
software shDIALUP must be used in order to establish a VPN connection.
-Alternatively,youcouldalsocreatethecongurationwithanHTTPS-secureddirect
callupfromyourbrowser.ThecallupisrealizedwiththefollowingURL:https://
v2.myREX24.net.
PleasealwaysuseyourmyREX24V2portalaccessdatatologin.Youcanndfurther
information in the manual for the myREX24 V2 portal.
ThevariouswaystotransferthecongurationyouhavecreatedtotheREX100are
describedinthisQuickStartGuide.

QuickStartGuideREX100WAN|WiFi 5
3.1 Registering
Ifyoudon'tyethaveamyREX24V2portalaccount,youcanregisterunderwww.my-
REX24.net.Fillouttherequiredeldsthere.Afteryourdataischeckedbyourservice
team(Mon.-Fri.8a.m.to5p.m.CET),youwillreceivetwoseparatee-mailswiththe
accessdata.Onee-mailcontainstheusername,thesecondthepassword.
The software required for establishing the connection with the myREX24 V2 portal
(shDIALUPandshCHECK)canbefoundinthedownloadareaunderwww.helmholz.de.
Thereyoucanalsodownloadfurtherdocumentswithadditionalexampleapplica-
tions at any time.
3.2 Log in to the myREX24 portal
OnceyouinstallandstarttheshDIALUPsoftware,youcanuseyourlogindatatolog
intothemyREX24portal.Select“V2.myrex24.net”intheserverselectioneld.
Notes:
-Alternatively, the login page can also be reached under: https://v2.myrex24.net.
Any up-to-date browser can be used for this purpose. Chrome and Firefox have been
successfully tested.
-Your login name is composed of a user name preceding the @ character and the name
of your company. Example: admin@helmholz
-Following the initial login, you will be prompted to register a new, individual password
for your account.
-If necessary, you can also create and administer additional users after logging into the
myREX24 V2 portal.

QuickStartGuideREX100WAN|WiFi6
Thefollowinginformationgoesoverthebasiccongurationstepsrequiredinorder
tobeabletoestablishaVPNportalconnection.Adescriptionoftheexpandedfunc-
tionscanbefoundwiththeonlinehelporinthemanuals/whitepapers.
Assoonasyouhavesuccessfullyloggedintotheportalforthersttime,youwill
bepromptedtoindividualizeyouraccessdataonce(usernames/passwords).Only
subsequent to this can a new project be created.
4.1 Create new project
Navigation: Administration > Projects
Click on the plus intheprojectoverviewandassignaprojectnameinthesubse-
quentwindow(allotherentries/informationcanbeprovidedlater).
4.2 Creatinganewdevice
Navigation: Administration > Projects > Project (here: “Project1”)
Click on the plus intheselectedprojectandthenon“Createnewdevice”.
Onlytheselectionofthetype,theassignmentofauniquenameandtheentryof
theserialnumbersarenecessaryfortheinitial/minimalcongurationinthemenu
“Device”underthetab“Device”.Thenamecanbefreelyselected,butonlythe
followingnumbersand/orlettersareallowed:0to9,AtoZ,atoz(withoutspaces).
Notes:
-The name must start with a letter. Umlauts, special characters, and spaces are not
permitted. Double designations are also not possible in the “Name”  eld.
-The serial number always starts with the letter “R”, followed by eight numbers (0-9).
Aftersavingyourinformation,youwillbeautomaticallyforwardedtothedevice
settings.
4. InitialroutercongurationviathemyREX24V2portal

QuickStartGuideREX100WAN|WiFi 7
4.3 CongureREX100(connectiondata)
Onlythe“Interfaces”menuisrelevantfortheinitialconguration.
Navigation: Administration > Projects > Project (selected project) > New Device (selected
device)
Click on the editing symbol inordertoprocessthesettingsoftherelevantsub-
menu.
Thefollowingmenusaresignicantfortheinitialconguration:
-LAN All REX 100 routers come with a LAN-side IP address of
192.168.0.100/24asadefault.ModifytheIPaddressandthesubnet
maskinkeepingwiththespecicationsfromthemachinerynetwork.
Note: It can happen that this IP address must be used as a standard gateway for ad-
ditional TCP/IP components that are connected to the REX 100 for remote maintenance
purposes (see page 20, chapter 8).
-Internet Fortheinitialcongurationitisadvisabletochoosetheaction“Always”
fortheselectioneld“Connecttoserveron”.Onlywiththissetting
does the REX 100 automatically attempt to establish a connection with
themyREX24V2portalassoonasitissuppliedwithvoltage.
WhenusingstaticIPaddresses,thecustomerspecicationsforthe
subsequentrouterlocationmustbeusedforthegateway,DNSserver,
and VPN port.
Priortodeningthepre-selectableVPNport,clarifywiththenetwork
administrator of the customer whether this is also open on the system
sideatthecustomerlocation(seealsopage18,chapter7).
-WAN EnterthedatafortheWANconnectionhere,DHCPorstaticIP.The
correspondingdataprovidesyouwiththeresponsiblenetworkadmin-
istrator.
-WLAN (only700-875-WIF01)EntertheWLAN-specicaccessdataforanaccess
point.Thecorrespondingdataprovidesyouwiththeresponsible
network administrator.
Note: If you enable DHCP, make sure that the DHCP server does not assign the WAN
port an IP address that is already in use on the LAN side. IP addresses from two different
subnets must be assigned to every router's LAN and WAN ports.
Savethesettings.Theinitialcongurationisherewithcomplete.

QuickStartGuideREX100WAN|WiFi8
ThecreateddevicecongurationcanbetransferredtotheactualREX100unitina
varietyofways.
1. Download to PC
ThecongurationleissavedonthePCandsubsequentlytransferredtotheREX100
usingaUSBstick(page9,chapter5.1).
You can choose this procedure when the REX 100 router cannot be reached through
eitherthelocalnetwork(LAN)orthroughtheInternetduringcommissioning.Pre-
requisite:thecongurationPChasaconnectionwiththemyREX24V2portal.
2.PrepareforSynchronization(FirstStartAssistantintheREX100necessary)
Tothispurposeyouprovidethecongurationdatafordownloadingintheportal.
ThecongurationisautomaticallytransferredtotheREX100assoonastheREX100
connectswiththeportal.(Page10,chapter5.2).
Prerequisite/conditions:
-TheREX100cancreateaconnectionwiththemyREX24V2portalviatheInternet.
-YouhavepreconguredtheconnectiondataviathewebinterfaceoftheREX100
(FirstStartAssistant).
-The REX 100 can be authenticated at the portal on the basis of its unique serial
number.
3.Submittodevice
ThecongurationistransferredviaalocalLANconnectionofthecomputeronwhich
shDIALUPisrunning(seepage15,chapter5.3).
You can select this procedure if the REX 100 can be reached directly through the local
network(LAN).TheIPaddresssettingsofthenetworkadapterarenotrelevanthere.
Note: We recommend the “Submit to Device” variant for the initial con guration.
5. Routercongurationtransferoptions

QuickStartGuideREX100WAN|WiFi 9
5.1 TransferofthecongurationusingaUSBstick
TheUSB-basedcongurationmethodcanbeusediftheREX100cannotbereached
eitherthroughthelocalnetwork(LAN)orthroughtheInternet.Theprerequisitefor
thisisaPCwithaUSBterminal,anInternetconnectiontothemyREX24V2portal
andanFAT-formatedUSBstick.
InthemyREX24V2portal,selectthe“DownloadtoPC”optioninthedevicesettings.
DownloadthecongurationleprovidedbythemyREX24portaltoyourPCand
saveitonaFAT-formatedUSBstick.Theleiscalledmyrex24.mbnfortheinitialcom-
missioningoftheREX100.Allofthefollowingcongurationlesgeneratedforthis
routerareautomaticallygeneratedbythesystemasmyrex24.mbnx.Neverrename
thisle.
3. Save the configuration file
1. Log-In at myREX24 V2
2. Create/edit and download the
REX 100 configuration
4. Transfer the configuration
Nowcarryoutthestepsdescribedonpage22inchapter11“Loadconguration/
rmwareupdatefromtheUSBstick.”

QuickStartGuideREX100WAN|WiFi10
5.2.1 FileconfigurationinthemyREX24V2portaltobepickedup
AssoonastheREX100routerhasestablishedanInternetconnectionwiththeportal,
theREX100isautomaticallyveriedforyouraccountonthebasisofitsunique
serialnumberandthecongurationisautomaticallytransferredtotheREX100.This
methodisalsoidealintheeventthatyouneedtocarryoutretroactivechangesto
thedevicesettings.
Prerequisite/conditions:
-ThedevicecongurationwascreatedinthemyREX24V2portal.Theserialnumber
has been correctly entered.
-TheREX100waspreconguredviathewebinterfacewiththeconnectiondata
(FirstStartAssistant).
-TheREX100hasaconnectiontotheInternet(WAN,WLAN).
Clickonthesymbolfortheselectionofthetypeoftransferandthenon“Preparefor
Synchronization”.
Nofurthersettingsarerequiredforthebasicconguration.Clickon“Synchronize”.
5.2 Prepareforsynchronizationwiththe“FirstStartAssistant”
4. Automatic synchronization
1. Log in via shDIALUP
2. Create REX 100 configuration
and prepare for
synchronization
3. Carry out First Start Assistent
in the REX 100

QuickStartGuideREX100WAN|WiFi 11
5.2.2 Callingupthe“FirstStartAssistant”throughthebrowser
You can also determine the Internet access of the REX 100 directly in the web inter-
faceoftherouterviathe“FirstStart”website.Thisisrelevantintheeventthatthe
REX100hasnotyetbeenconguredthroughoneoftheothercongurationpaths
(withthePCviaLANorviaUSBstick).
Inthedeliverycondition,theREX100hastheLANIPaddresssetting192.168.0.100
with the subnet mask 255.255.255.0. In order to reach the REX 100 through your
localLANconnection,thenetworksettingofyourPCmayneedtobeadjusted.To
thispurpose,openthepropertiesofyourLANconnectionandadjusttheIPV4ad-
dressandthesubnetofthecomputer(e.g.IP:192.168.0.99/SNM:255.255.255.0).
ThewebsitecanthenbereachedforsubsequentcongurationwiththeURL:
http://192.168.0.100.
Authenticate yourself with the user: helmholz and the password: router. The First
StartAssistantthenopens.
Note: Make sure that there are no address space confl icts with any other network
interfaces (do not assign the same IP address more than once) in order to be able to
communicate with the REX 100 unit properly.
Inthecaseofwiredmodels,accesstotheInternetcanonlybeestablishedthrough
the“ExternalRouter”onthesystemside.Tothispurpose,theWANinterfacemustbe
connectedwiththecustomerserver/DSLmodem.
InthecaseofWLANvariants,youmusthavethelogindatafortheaccesspoint.
Ifyouselect“DHCP”,noIPaddressadjustmentsneedtobecarriedout.“DHCP”
istheusualsettingforWLANparticipants.Thesettingsforaccessthroughaproxy
servercanalsobestoredinthisinputscreenasneeded.
Note: It may be necessary to approve the MAC address of the REX 100 in the higher level
DSL modem or the  rewall. If it should not be possible to establish a connection, please
ask your network administrator whether a MAC address  lter has been activated.
REX 100 WAN
ThevaluesforthestaticallysetWANportareestablishedbytheresponsiblenetwork
administrator.Thesettingsforaccessthroughaproxyserverarealsostoredinthis
input screen as needed.

QuickStartGuideREX100WAN|WiFi12
REX 100 WiFi
TheaccessdatafortheWLAN-specicsettingsareestablishedbytheresponsible
networkadministrator.Thesettingsforaccessthroughaproxyserverarealsostored
in this input screen as needed.
Selectthefollowingsettingfromthelistofportalservers:“V2Europe”.Thecodefor
thesessionkeyisoptionalandisestablishedwiththeinitialconguration.Noentry
must be made for the initial commissioning.
Conrmwith“Next”.
Thesettingsintheassistantarenowcomplete.Clickon“Apply”.TheREX
100savestheentriesandyouarethenforwardedtothe“Devicestatus”page
(page15,chapter5.3).Theindividualconnectionstepsaredisplayedtherefor
informational purposes. As soon as the REX 100 has successfully connected
withthemyREX24V2portalthroughtheInternet,itpicksuptheconguration
storedforitandactivatesitautomatically.

QuickStartGuideREX100WAN|WiFi 13
5.2.3 SynchronizationofthemyREX24V2portalconfiguration
AssoonastheREX100hasloggedintoyouraccountintheportal,youcantransfer
retroactivechangestotheREX100atanytimewith“Synchronize”.Wherethereisan
existingmyREX24V2portalconnection,theREX100checkscyclicallywhetherthere
isanewcongurationavailableforitsserialnumberandthenloadsitautomatically.
When,forexample,youhaveeditedtheLANIPaddress,the “Devicecongura-
tionisnotuptodate”symbolappearsnexttotheOnlineLED.
Clickheretoinitiatethesynchronization.Alternatively,thecorrespondingmenucan
alsobeopenedviathesymbol .
Thesynchronizationfunctionmustalwaysbeconrmedthroughthefollowing
dialog.Inthismenuyoucandeneadditionalsecurityaspectsasrequired.
Whenyougenerateauniquekeyforthedownloadhere,thismustbeenteredinthe
“FirstSetupAssistant”attheREX100websiteforpurposesofverication(page10,
chapter5.2.1).

Quick Start Guide REX 100 WAN|WiFi
14
5.2.4 Devicestatusanddiagnosticspage
The status page on the REX 100 router's web interface will show the router's connec-
tionstatusandactivecongurationdata.Tothispurpose,entertheLANIPaddressof
the REX 100 into the address bar of a browser. The REX 100 must be accessible to this
purpose,meaningthattheTCP/IPaddressofaPCmustbeinthesameIPsubnet.
Authenticate yourself with the standard user: helmholz and the password: router.
Togetmoreinformationoneachstepoftherouterconnection,clickonthe
Infoiconinthestatuselds.
Intheeventofirregularitiesorinterruptionswhenestablishingtheconnection,the
diagnosticspagesupportsyouwithtroubleshooting.Intheeventofanerror,the
technicalsupportofHelmholzrequirestherespectiveresultfromtheindividualand
autonomous test functions.

Quick Start Guide REX 100 WAN|WiFi
15
5.3 TransfercongurationviaalocalLANconnection
InordertotransferthecongurationfromaPCthroughalocalLANconnection,the
congurationPCmustallowfortwosimultaneousnetworkconnections:
1.ThePCmustbeactiveintheInternetwiththeshDIALUPsoftware
2.ThePCandtheREX100tobeconguredmustbeconnectedinthesamenetwork
viaLAN
In practical terms this is possible as follows:
-PCwithtwonetworkadapters/Ethernetconnections
-Notebook with WLAN and Ethernet connection
-PC or notebook with additional switch at the workspace
LAN
1. Log in via shDIALUP
3. Search for REX 100 in the LAN
4. Transfer the configuration
2. Create/edit and download the
REX 100 configuration
LAN

QuickStartGuideREX100WAN|WiFi16
Procedure:
-ConnectthefreeLANportofyourPC(LANadapter)totheREX100unit'sLANport
with a standard CAT-5 patch cable.
-Selecttheoption“TransfercongurationtotheREX100”intheREX100device
settingsinthemyREX24V2portal(shDIALUP)(page8,chapter5).
Themenuforthetransferfunctionopens(theWindows2rewallappearsattherst
start;allowaccesstothecorrespondingnetwork).Selecttheappropriatenetwork
adapterinthe“selectnetworkadapter”selectionmenu.
Thesearchstartswithabroadcastwith“scan”.WhentheREX100withtheappropri-
ateserialnumberisfound,thetransfercanbestartedwith“go>>”.
Afterthecongurationhasbeensuccessfullytransferred,theREX100automatically
carries out a restart and uses the new settings.
Inordertoleavethemenu,click“CANCEL”

QuickStartGuideREX100WAN|WiFi 17
6. Establishing a VPN connection to your REX 100
Note: The following steps presume that the REX 100 has already been con gured and
that you have successfully logged into your account with shDIALUP.
LoggedinREX100routersareshownidentiedwithagreencircleinthedashboard
view.TheVPNconnectionisestablishedbyclickingontheconnectionbutton .
Thenumberofactiveconnectionsisshowninthemenubar.
The connection status with the REX 100 is represented with an orange LED. In order
toendtheconnectionofaremoteaccess,pleaseclicktheinthemeantimeyellow
andanimatedconnectionbuttonandthenconrmthedisconnectionoftheremote
connection.
OnceaconnectiontotheREX100hasbeenestablished,alltheIPpacketsthatare
validfortheapplicableLANnetworkonthesystemsidewillbeforwarded.Further
parametersfortheVPN-IP/IPsubnetarealsoshowninthelowerstatusbarforinfor-
mational purposes.

Quick Start Guide REX 100 WAN|WiFi
18
7. Tips and tricks
7.1 Establishing of connection isn't working
Iftheconnectiontotheportaldoesnotworkonthersttry,pleaseinstallour
“shCHECK”testingtoolonaPC.Thisfreelyavailableprogramcheckswhetherthe
portsneededtosuccessfullyestablishaconnectiontothemyREX24portalhavebeen
approved.Thismeansthatthenetworkatthesystem(fromwhichaREX100router
withWANinterfacecreatestheconnectionwiththeInternet)canbechecked,ascan
thenetworkwiththePCsmeanttoconnectwiththeportalviathedial-insoftware
shDIALUP.
Background:
-shDIALUP and the REX 100 establish an outbound TCP connection with the address
v2.myrex24.net(5.39.123.21).
-InordertobeabletoestablishasecureconnectiontothemyREX24serverwith
shDIALUPorREX100,atleastoneofthefollowingTCPports(80,1194,or443)re-
quiredfortheVPNtunnelmustbeopen.Port80islockedintheexampleshownto
theright.However,theconnectionwiththemyREX24-V2servercanbeestablished
viaports443or1194.
PleaseclarifywhichsettingisrequiredinadvancewiththeresponsibleITdepartment
on site. You can adjust the port correspondingly in the VPN settings of the REX 100.
7.2 Deviceconguration:Services–HTTPS
Alternatively,youcanalsoviewthestatusofyourmachineswithadirectcall-upof
themyREX24-V2serverfromyourbrowser:https://v2.myREX24.net.Theconnection
isHTTPS-secure.PleaseuseyourshDIALUPaccessdatatologin.MostmyREX24V2
portalfunctionsarethenavailable.
Youcanonlycarryoutaremotemaintenanceconnection,theUSB/COM-over-IP
functionsandthe“SubmittoDevice”,withtheshDIALUPclientsoftware.

Quick Start Guide REX 100 WAN|WiFi
19
7.3 Deviceconguration:Services–mailsettings
If you would like to use the function for the automatic sending of e-mails of the
REX100(WAN),port25(SMTP)maynotbeblockedintherewallinthecustomer
network.Youcanalsousealternativee-mailserverstosende-mails.
7.4 Deviceconguration:Services–NTPserver
ForpurposesoftimesynchronizationoftheREX100,thiscarriesoutacomparison
atregularintervals.Wherenecessary,youcanindividuallysetthepresetNTPserver
andtheinterval.

QuickStartGuideREX100WAN|WiFi20
8. Remote maintenance of Ethernet CPUs
Theintegrated3or4-portswitchissuitablefor100Mbpsandfullduplexoperation
andsupportsauto-crossoverandauto-negotiation.NospecialPROFINETfunctions
are supported.
Notes:
-Please note that the P1 LAN interface is started delayed for technical reasons in the
event of a device reset/switching on of the device in the case of REX 100 WiFi devices.
-When connecting additional Ethernet participants (PLC/panel) on the REX 100, it must
be ensured that the IP addresses of the devices lie within the address range of the LAN
interface of the REX 100.
Ext. V DC
18 ... 30 V
- + FG
PWR
RDY
CON
USR
FCN
USB
IN1 IN2
ANT
RST
P1 LAN P2 LAN P3 LAN P4 LAN
SN: 1234567890
Devicesettings:Services–FirewallSettings–SNAT
WithaREX100,theSNATfunctionisactivatedasadefault.Withthissetting,par-
ticipantsforwhichnogateway*/routerhasbeenenteredarereachedviatheVPN
tunnel.FortheCPUsandpanelsofsomemanufacturers,itcanbethecasethatyou
needtoexplicitlyenterthegateway*anddeactivatetheSNATfunctioninorderthat
aremoteconnectionwiththeenddeviceispossible.
*Gateway:ThisreferstotheLANIPaddressoftheREX100.
InordertoreachaPLCorapanelviatheVPNtunnel,theopenVPNadaptermustbe
selectedinthecorrespondingsoftwaremodulesastheinterface.Thevirtualnetwork
connection responsible for this is the TAP Windows2Adapter V9.
ThesettingtobeselectedinthePG/PCinterfacemodulefromtheSIMATICSTEP7¹
software is emphasized in the detail to the right.