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VSI-Pro VIDEO SERIAL INTERFACE
There are a myriad of PC-based systems out there which do not appear on the AVE Cash Register Compatibility List.
Most of the PC-based cash registers that were not included in the AVE Cash Register Compatibility List are able to
interface to the VSI-Pro. To find the compatibility of a cash register we need to determine following:
Does the cash register use a stand-alone receipt printer? If it does it can either be a serial or parallel printer. Serial
printers use DB9 or DB25 type connectors. However parallel printers generally use Centronics type connectors, but
on the cash register side use DB25. If it is a serial printer then you can use an AVE Triport DB9 or Triport DB25.
The VSI-Pro can also interface with a parallel printer, if a high speed parallel-to-serial converter is connected with
either the cash register or with the printer. You can also use AVE’s high speed serial-to-parallel converter “P2RS” for
interfacing the VSI-Pro to the parallel port. AVE’s high speed P2RS converter is shown below.
Pole or Customer Displays are similar to printers and are either serial or parallel and all the above also apply.
Figure 2B: P2RS Parallel-to-Serial Converter
Rear Panel
Figure 1B: P2RS Parallel-to-Serial Converter
Front Panel
Figure 5B: Centronics Cable
Figure 4B: DB-25 Cable
The Pin-Out for the cable between the P2RS and the VSI-
Pro is as follows.
Figure 3B: P2RS Parallel-to-Serial Converter
Connection Cables
Serial Input
Printer CablePower
Figure 6B: Pin-Out for P2RS to VSI-Pro
P-2-RS ( DB-9F ) VSI-Pro ( DB-9M )
TXD 3 2 RXD
GND 1 5 GND
PC-BASED CASH REGISTER APPENDIX B