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Copyright © Access-IS 2016
3.4
Interface options
3.4.1 Serial connection
Connect a serial ATR110 device using an RS232 interface directly into a COM port. You must
specify the baud rate, parity, data bits and stop bits.
Note:
A serial ATR110 communicates directly with the COM port and does not require any special
software or drivers to be loaded.
3.4.2 USB connection
Connect a USB ATR110 device using one of three possible options. These options are compatible
with all Linux and Windows operating systems from XP onwards.
3.4.2.1 Keyboard interface
Virtual keyboard using Windows or Linux drivers
This allows the device to operate without additional drivers, with the ATR110 emulating a keyboard.
This is one-way communication; it is not possible to control the device directly in this mode.
This mode will be slower than the other options as it adds an inter-character delay when typing the
barcode data. For higher throughput, consider using a HID or CDC interface.
3.4.2.2 CDC interface
Virtual serial mode using the Windows CDC driver
This assigns a COM port and the device will communicate as a virtual serial device. Due to the
nature of CDC serial port drivers, the COM port disappears if the unit is unplugged.
3.4.2.3 HID Interface
Access-IS recommends the use of the HID interface for reliability. A HID interface recovers properly
in the event of accidental disconnects or system power fluctuations; a CDC interface may not
recover in these situations.
HID interface using the Access driver (Windows only)
The Access Serial Ports Service driver is fully configurable and outputs data in virtual serial or
virtual keyboard. The output itself can be parsed and reformatted. The serial port is permanent and
does not disappear if you unplug or hot swap the unit. This is one-way communication and the only
command that you can send to the device is
AIS_BO
to enable or disable barcode reading. Refer
to page 28 for more information.
HID interface without the Access driver
This method is only suitable is you are familiar with HID programming.
It is possible to communicate directly with the ATR110 us
ing the operating system’s built-in HID
drivers. In this instance, HID reports, exactly 64 bytes in length, are sent between the host and the
ATR110.
The implementation of this driver and the method of interaction will depend on the version of the
host operating system. You should refer to the HID programming guide for the operating system that
you are using.
Refer to
HID reports
on page 32 for the details of the HID reports used with the ATR110.