4/14/2016
D014465 CR1400 CR1000 CR2300 CR2600 CR3600 CR44X5 CR8000 CR900FD CR6000 CR5000 T500 Client Version ICD
Page 8 of 106
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5 Communication Medium
The Reader communicates with the Host via USB (keyboard/HID/VCOM), RS232, or Bluetooth®. The
Host includes appropriate hooks and/or drivers to enable two-way communication with the Reader.
Note: USB keyboard communications are one-way, from the Reader to Host only. A special sequence is
available to switch the Reader from keyboard to HID communication mode. See register 1B.
5.1 USB Enumeration PID
The following Product ID (PID) are used by Code to identify their products when connected to a PC. All
Code products use the same Vendor ID (VID) of 11FA
IBM POS (also known as IBM Handheld)
HID Native (also known as Downloader)
Keyboard + bulk interface
Keyboard (Used to communicate with CortexTools®)
6 Reader to Host Communication
The Reader may be configured in raw mode, where no packet framing or check characters are sent,
and packet mode (See sections 4.1 and 4.2) The Reader may also be configured to expect an
acknowledgement from the Host after each packet and automatic retry when no acknowledgement is
received. Standard “one-way” mode of operation uses raw packets, no expected response from Host,
and no automatic retry. Standard “two-way” mode of operation uses packets with framing and checks
characters, expects a response from the Host, and automatically resends. If no Acknowledgement is
received (ACK), three (3) attempts to resend are made.
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