Wi-Fi® Interface¶
The CANlink® mobile 3700 is designed for wireless operation via Wi-Fi® or Bluetooth Low Energy (BLE) interface. These functions are available on types 3733, 3737, 3773, and 3777.
In operation via the Wi-Fi® interface, CAN data is transmitted wirelessly and bidirectionally to other Wi-Fi®-capable devices supported by the Proemion Byte Command Protocol, e.g. CANlink wireless, PCs, smartphones or tablet PCs.
The Wi-Fi® interface features two operating modes: Station mode and mini access point mode.
In Station mode, the CANlink® mobile 3700 is integrated into an existing network infrastructure and data transmission takes place via one or more access points within this network.
In mini access point mode, the CANlink® mobile 3700 additionally provides a Wi-Fi® access point function, allowing other Wi-Fi®-capable devices to connect directly to the CANlink® mobile 3700.
In this mode, the CANlink® mobile 3700 can automatically provide the required network parameters via an integrated DHCP server.
Wi-Fi® Security¶
| Name | Authentication | Data Protection |
|---|---|---|
| None (OSA)1 | No | Data is not encrypted |
| WPA2 | Yes (shared password)3 | Data is encrypted |
| WPA3-Personal (SAE) | Yes (shared password)3 | Data is encrypted |
| WPA3 OWE | No (opportunistic encryption, access point identity is not verified) | Data is encrypted |
| PEAP (WPA/WPA2/WPA3)1, 2 | Yes (username & password) | Data is encrypted |
| EAP-TLS (WPA/WPA2/WPA3)1, 2 | Yes (client & server certificates) | Data is encrypted |
Wi-Fi® Frequencies and Channels¶
The CANlink® mobile 3700's Wi-Fi® interface requires a country code to be configured before it starts up.
The country code uses the two-letter ISO 3166-1 alpha-2 format, e.g. DE for Germany, US for the United States, or JP for Japan.
The configured country code determines the channel list and transmit power limits that are legally permitted at the CANlink® mobile 3700's operating location.
The Wi-Fi® interface supports the following bands and channels, depending on the configured country code:
| Band | Channel |
|---|---|
| 2.4 GHz | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 |
| U-NII-1 | 36, 40, 44, 48 |
| U-NII-2 | 52, 56, 60, 64 |
| U-NII-2e | 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 |
| U-NII-3 | 149, 153, 157, 161, 165 |
Note
The CANlink® mobile 3700 does not start the Wi-Fi® interface if no country code is configured. When a channel is not permitted for the configured country code, communication on that channel is not possible. Manual channel selection is only available in mini access point mode. In station mode, the CANlink® mobile 3700 uses the channel of the access point it connects to.
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Open System Authentication and enterprise mode is not supported when the device is configured as an Access Point. ↩↩↩
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Note regarding Wi-Fi® encryption/authentication: If CANlink mobile devices are used in the Wi-Fi® environment of 802.1x or WPA-Enterprise or WPA2/802.1x, a separate project agreement is required. For more information, contact Service and Support. ↩↩
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In mini access point mode, the shared password must be 24-63 characters long and contain at least one lower-case letter, one upper-case letter, one digit, and one special character. In station mode, 8-63 characters are sufficient. ↩↩