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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 are not included in the AVE Cash Register Compatibility List are able to
interface to the VSI-Pro Max. 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 , DB25 or RJ45 type connectors. However parallel printers generally use Centronics type connec-
tors, 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.
USB ports are also commonly connected to printers. The AVE USB232 adapter will emulate a printer and output
RS-232 data to the VSI-Pro Max. A software driver is supplied with the unit which needs to be installed on the PC
prior to running the POS software.
The VSI-Pro Max 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, parallel or USB and all the above also apply.
Figure 109: P2RS Parallel-to-Serial Converter
Front Panel
Figure 113: Centronics
Cable
Figure 112: DB-25 Cable
The Pin-Out for the cable between the P2RS and the VSI-
Pro is as follows.
Figure 111: P2RS Parallel-to-Serial Converter
Connection Cables
Figure 114: Pin-Out for P2RS to VSI-Pro Max
P-2-RS ( DB-9F ) VSI-Pro ( DB-9M )
TXD 3 2 RXD
GND 1 5 GND
APPENDIX E P2RS Parallel to Serial Converter
VSI-Pro Max POS / Cash Register Interface
Serial Input
Printer CablePower
Figure 110: P2RS Parallel-to-Serial Converter
Front Panel