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A: If you would like to connect FMS to FMB640, you can connect it directly to FMB640 CAN lines without any adpaters or Converters, please see this link:
https://teltonika-gps.ltcom/downloads/en/fmb640/FMB640-wiring-full.png
CAN1L and CAN1H can be connected to the FMS lines directly to read FMS data.
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