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cfnet:cfheader:connecting_to_usb_host:index [2026/02/16 06:13] – created - external edit 127.0.0.1cfnet:cfheader:connecting_to_usb_host:index [2026/03/04 14:05] (current) – admin
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 ====== Connecting to a USB Host ====== ====== Connecting to a USB Host ======
  
-Connect a USB cable between the USB host and either the USB Type B connector or the USB Molex connector of the CFHEADER module.  +Connect a USB cable between the USB host and either the USB Type B connector or the USB Molex connector of the CFHDR-8U module.  
  
 There is no need to hassle with baud rates, parity, and other serial communication settings, or worry about whether to cross TX and RX pins. Once connected via USB, if the device appears in Windows Device Manager, or in the output of ''lsusb'' on Linux, it's immediately ready to use. There is no need to hassle with baud rates, parity, and other serial communication settings, or worry about whether to cross TX and RX pins. Once connected via USB, if the device appears in Windows Device Manager, or in the output of ''lsusb'' on Linux, it's immediately ready to use.
  
-Up to 8 CFHEADER modules can be connected to a single USB host as long as each is assigned a unique address using the //ADDR// DIP switches.+Up to 8 CFHDR-8U modules can be connected to a single USB host as long as each is assigned a unique address using the //ADDR// DIP switches.
  
 **IMPORTANT**:  12~24VDC power must be supplied for proper operation. Although the USB Type B connector provides sufficient power for USB communication, it does not provide sufficient power for the IO modules to operate correctly.  For the USB Molex connector, 12~24VDC power is required even for USB communication. **IMPORTANT**:  12~24VDC power must be supplied for proper operation. Although the USB Type B connector provides sufficient power for USB communication, it does not provide sufficient power for the IO modules to operate correctly.  For the USB Molex connector, 12~24VDC power is required even for USB communication.
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 ===== Windows ===== ===== Windows =====
  
-For a Windows host, the CFHEADER should immediately appear in device manager.+For a Windows host, the CFHDR-8U should immediately appear in device manager.
  
 {{ .:cfh_device_manager.png }} {{ .:cfh_device_manager.png }}
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 === Linux Permissions === === Linux Permissions ===
  
-By default, Linux does not give ordinary users direct access to USB devices.  That will result in errors when attempting to communicate with the CFHEADER module without elevated privileges.  To give access to USB devices for ordinary users, create a file named ///etc/udev/rules.d/99-usb.rules// with the following contents:+By default, Linux does not give ordinary users direct access to USB devices.  That will result in errors when attempting to communicate with the CFHDR-8U module without elevated privileges.  To give access to USB devices for ordinary users, create a file named ///etc/udev/rules.d/99-usb.rules// with the following contents:
  
 <code> <code>
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 Then reboot. Then reboot.
 +
 +[[..:index|CFHDR-8U - USB Interface to CFNET IO Modules]]
cfnet/cfheader/connecting_to_usb_host/index.1771222432.txt.gz · Last modified: by 127.0.0.1

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