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Internet Remote Access - For Easy and Free remote access
For machine builders, OEMs and system integrators
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The eWON unit is an industrial router that allows machine builders or system integrators to interact with an automation environment in new ways. Using Internet connections for the remote maintenance of machines drastically reduces costs by eliminating the need for long-distance calls. The eWON industrial routers provides the full power of IP routers with technologies such as GPRS, EDGE, UMTS, HSDPA/HSUPA and ADSL. eWON also provides a unique way to establish Internet connections via a local network. To achieve secure connections over the Internet between the user and the machine, eWON has developed Talk2M (“talk to machine”), a smart Web-based remote access method.
Architecture 1: Internet access using a cellular/mobile router
Mobile/cellular operations are essentially different from dial-up modem operations.
When an eWON industrial router connects using GPRS, EDGE, UMTS, HSDPA or HSUPA, it goes online on the Internet via direct access to the provider’s access point name (APN), which is usually an Internet domain name such as my.mobistar.be. The only thing the user needs to do is to wake up the eWON industrial router, which means forcing the eWON unit to connect to the APN, by using the callback mechanism. This can also be done by sending a text message instead of using a ring tone. After the message is received, the eWON unit goes online, obtains its IP address from the provider, and can access the Internet. There are three typical scenarios, depending on type of subscription offered by the telecom provider:
The first advantage of mobile/cellular communication is its price model, which is based on the volume of data transmitted. In theory, the communication channel can be kept open permanently. In practice, there are some overhead costs because it is necessary to send “keep alive” data periodically in order to keep the VPN channel open. The number of keep-alive transmission cycles should be kept small. Accordingly, Talk2M provides a smart text-messaging wake-up mechanism that allows the connection to be closed.
A second advantage is that in some countries cellular/mobile communication networks are much better developed than PSTN networks. With mobile/cellular communication, remote maintenance of mobile or “inaccessible” applications is thus more convenient than with landline communication. In addition, the bandwidth of UMTS, HSDPA or HSUPA is comparable to the bandwidth of wired DSL.
Finally, eWON’s innovative Talk2M web server application guarantees machine builders and system integrators access to remote sites even when the IP addresses are not public or there is a firewall that blocks all incoming communication.
The eWON 2101CD industrial router offers the choice of a GPRS, UMTS or HSUPA modem.
Architecture 2: Internet remote access over the LAN
Compared to the eWON 2101CD industrial router, the eWON 2005CD industrial router provides an additional WAN uplink for direct connection to a factory or company LAN or an external ADSL router. In the latter case, the available IP address is address of the ADSL router. The ADSL subscription may restrict access to the IP address. If an IP address can be reached, the user can connect to the eWON unit in VPN server mode.
If the IP address is not public or there is a firewall that blocks all incoming communication, Talk2M can be used. Talk2M is an Internet service designed to address the growing need for broadband and wireless access for remote maintenance and access to remote equipment. The key added value of Talk2M is the full integration of IT security standards by enabling Internet tunneling between the user and the remote machine without requiring any changes to IT network security settings at either end. This major breakthrough allows easy deployment while hiding the complexity of the IT network infrastructure.
The eWON 2005CD industrial router brings broadband Internet to industrial applications, enabling larger bandwidth and dramatically increasing data throughput. In specific cases where connecting to a remote device is difficult, Talk2M hides all the complexity of the IP pass-through systems (firewall, proxy server, etc.) sometimes employed by Internet service providers. The eWON industrial router acts as an intelligent front end for your field equipment while at the same time creating a secure private VPN tunnel through the Internet and bringing remote devices “virtually” onto your home LAN. Acting as a secure VPN router, the eWON unit enables you to directly control remote devices via the Internet.
Featured products
For Internet connections over a local LAN, the eWON 2005CD industrial router has the following options:
The eWON 2101CD/2104CD/2005CD industrial routers provide a secure remote Internet access solution for PLCs and automation devices. It expands connection options thanks to its WAN uplink capability and embedded modem technologies, including GPRS, EDGE, UMTS, HSDPA/HSUPA, and ADSL.
Architecture 1: Internet access using a cellular/mobile router
Mobile/cellular operations are essentially different from dial-up modem operations. When an eWON industrial router connects using GPRS, EDGE, UMTS, HSDPA or HSUPA, it goes online on the Internet via direct access to the provider’s access point name (APN), which is usually an Internet domain name such as my.mobistar.be. The only thing the user needs to do is to wake up the eWON industrial router, which means forcing the eWON unit to connect to the APN, by using the callback mechanism. This can also be done by sending a text message instead of using a ring tone. After the message is received, the eWON unit goes online, obtains its IP address from the provider, and can access the Internet. There are three typical scenarios, depending on type of subscription offered by the telecom provider:
- Public APN with public IP address: In this scenario, which is very similar to that described above for Architecture 1, after it is connected the eWON unit publishes its IP address by email or via a dynamic DNS web server. A VPN connection is than established over the public GPRS APN using port 1194, which must be left open by the telecom operator to allow the VPN tunnel. eCatcher running on the PC connected to the Internet is used as the VPN client software for accessing the remote device.
- Public APN with private IP address: In this scenario, the eWON IP address is not visible because it does not exist in the Internet domain (in technical terms, the address is NATed). As the eWON unit cannot act as a VPN server, it cannot be accessed directly using VPN client software. In this case, Talk2M is used to access the remote eWON unit. The eWON unit is configured to connect to the Talk2M web server, which acts as an intermediary between a user on a PC connected to the Internet and the eWON unit. Finally, eCatcher is also used as a VPN client, but it connects to the Talk2M web server instead of connecting directly to the eWON unit.
- Private APN: In this scenario, a private network is created on the GPRS network, where each SIM card has its own fixed IP address. Only users belonging to the private network can access this address or any other address. To maintain the privacy of this network, the provider also uses the VPN technique for each connection, so the integrated VPN capability of the eWON unit is unnecessary.
Advantages
The first advantage of mobile/cellular communication is its price model, which is based on the volume of data transmitted. In theory, the communication channel can be kept open permanently. In practice, there are some overhead costs because it is necessary to send “keep alive” data periodically in order to keep the VPN channel open. The number of keep-alive transmission cycles should be kept small. Accordingly, Talk2M provides a smart text-messaging wake-up mechanism that allows the connection to be closed.
A second advantage is that in some countries cellular/mobile communication networks are much better developed than PSTN networks. With mobile/cellular communication, remote maintenance of mobile or “inaccessible” applications is thus more convenient than with landline communication. In addition, the bandwidth of UMTS, HSDPA or HSUPA is comparable to the bandwidth of wired DSL.
Finally, eWON’s innovative Talk2M web server application guarantees machine builders and system integrators access to remote sites even when the IP addresses are not public or there is a firewall that blocks all incoming communication.
Featured products
The eWON 2101CD industrial router offers the choice of a GPRS, UMTS or HSUPA modem.
- GPRS quad band: eWON ref. EW332x8
- UMTS (with fallback to EDGE/GPRS): eWON ref. EW332xB
- HSUPA (with fallback to HSDPA, UMTS, EDGE or GPRS): eWON ref. EW332xA
- ‘6’ if the MPI/Profibus protocol must be used for connection to the PLC(s)
- ‘0’ otherwise.
Architecture 2: Internet remote access over the LAN
Compared to the eWON 2101CD industrial router, the eWON 2005CD industrial router provides an additional WAN uplink for direct connection to a factory or company LAN or an external ADSL router. In the latter case, the available IP address is address of the ADSL router. The ADSL subscription may restrict access to the IP address. If an IP address can be reached, the user can connect to the eWON unit in VPN server mode. If the IP address is not public or there is a firewall that blocks all incoming communication, Talk2M can be used. Talk2M is an Internet service designed to address the growing need for broadband and wireless access for remote maintenance and access to remote equipment. The key added value of Talk2M is the full integration of IT security standards by enabling Internet tunneling between the user and the remote machine without requiring any changes to IT network security settings at either end. This major breakthrough allows easy deployment while hiding the complexity of the IT network infrastructure.
Advantages
The eWON 2005CD industrial router brings broadband Internet to industrial applications, enabling larger bandwidth and dramatically increasing data throughput. In specific cases where connecting to a remote device is difficult, Talk2M hides all the complexity of the IP pass-through systems (firewall, proxy server, etc.) sometimes employed by Internet service providers. The eWON industrial router acts as an intelligent front end for your field equipment while at the same time creating a secure private VPN tunnel through the Internet and bringing remote devices “virtually” onto your home LAN. Acting as a secure VPN router, the eWON unit enables you to directly control remote devices via the Internet.
Featured products
For Internet connections over a local LAN, the eWON 2005CD industrial router has the following options:
- LAN connection: eWON ref. EW262x1
- LAN connection with GPRS/EDGE backup mode: eWON ref. EW262x7
- LAN connection with HSUPA backup mode (with fallback to HSDPA, UMTS, EDGE or GPRS): eWON ref. EW262xA
- ADSL modem: eWON ref. EW272x1
- ADSL modem with PSTN backup mode: eWON ref. EW272x4
- ADSL modem with GPRS/EDGE backup mode: eWON ref. EW272x7
- ‘6’ if the MPI/Profibus protocol must be used for connection to the PLC(s)
- ‘0’ otherwise.
Conclusion
The eWON 2101CD/2104CD/2005CD industrial routers provide a secure remote Internet access solution for PLCs and automation devices. It expands connection options thanks to its WAN uplink capability and embedded modem technologies, including GPRS, EDGE, UMTS, HSDPA/HSUPA, and ADSL.
