This section talks about using LCDproc with a point of sale ("POS") character-display. The serialPOS driver is currently working with the AEDEX emulation protocol, but can be extended to work with various other protocols. The driver should operate most character POS displays with a serial (RS-232) input. Because these displays use a standardized protocol, if the protocol is supported by your display, it should work as expected. Feedback is welcome. Protocol Display tested Currently Supported Remark AEDEX Emax Yes IEE No Epson No Emax No IBM No Logic Controls No Ultimate No (…): Feature not tested. Connecting the display should consist of simply plugging it into your computer's RS-232 port. Because these displays typically support full RS-232, no additional wiring is needed. If your computer does not have such a port (many newer computers don't), you can use a USB to serial adapter with the appropriate driver. If your display supports a pass-through function, but you do not have another RS-232 device connected to the pass-through port, you may experience hangs if an improperly formatted command sneaks through. This is because the display is waiting for the pass-through device to accept the data and a blocking state is created within the device. You can either connect another RS-232 device, or rewire the display to send the pass-through commands back to your computer. Device= DEVICE Device to use in serial mode. Usual values are /dev/ttyS0 or /dev/cu.usbserial. Default is /dev/lcd. Size= WIDTH x HEIGHT Specifies the size of the VFD in characters. If not given, it defaults to 16x2. Type= IEE AEDEX Epson Emax IBM LogicControls Ultimate Set the communication protocol to use with the POS display. If not specified it defaults to AEDEX. Currently, only AEDEX is supported. Speed= 1200 2400 9600 19200 115200 Set the the baud rate communication with the POS display. If not given the default of 9600 is used.