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ASCII Overview
ASCII Command Protocol (ACP) allows the user to talk directly to the device without a DLL or special
application. The serial Prox communicates using ASCII commands. Printable ASCII commands at
9600 baud, no parity 1 stop bit, and no echo, can be sent to the device.
Note: USB devices that are virtual COM port do not need the baud rate set. The input is buffered by
the device and executed when a carriage return (CR) or line feed line feed (LF) is typed. The
unit then parses the command and performs the operation, and displays the results or error
code. “\r\nRF IDeas>” where \r represents a CR and \n represents a LF that displays on the
command line.
All commands begin with the prefix rfid: and end with a Return key, CR or LF.
Determine the COM Port
Windows
Use device manager to display the COM ports. Open the serial COM port. If it is a CDC virtual port,
open the newly installed device that was created.
Linux
Most Linux distributions include Minicom. Download putty (www.putty.org ) to communicate with
the serial device if Minicom is not available.
After the USB CDC device is enumerated on the Linux machine a device of either /dev/ttyACM0 or
/dev/ttyACM1 is found in the /dev/directory. Minicom users may have to create a symbolic link from
/dev/ttyACM0 to /dev/modem using the command ln -s /dev//tty/ACMO /dev/modem or
ln -s /dev/ttyACM1 /dev/modem.
Mac OS X
The /dev/cu.usbmodemfa211 device is found on a Mac OS X . Use putty to communicate with this
device.
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ASCII Command Protocol
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