What is OPOS?

OPOS, an acronym for  OLE for Retail Point Of Sale, a platform specific implementation of UnifiedPOS, is a point of sale device standard for Microsoft Windows operating systems that was initiated by Microsoft, NCR, Epson, and Fujitsu-ICL and is managed by the Association for Retail Technology Standards. The OPOS API was first published in January 1996. The standard uses component object model and, because of that, all languages that support COM controls (i.e. Visual C++, Visual Basic, and C#) can be used to write applications.

In Layman's terms, OPOS is a program that provides a more automated Point of Service experience. Instead of having a window open as a preview then having to select print or having to manually open a cash drawer, OPOS will perform this automatically.

Limitation:  OPOS devices cannot be networked or shared, the devices can only be used on the computer upon which it is installed.  If the need to print receipts to the printer from multiple computers exists, OPOS cannot be used.



EverLogic supports 2 OPOS hardware devices

  1. Epson TM-T88V thermal receipt printer with the USB interface
  2. APG model S100 heavy duty cash drawer, with the 554A USBPro II USB interface


OPOS Installation

  • To install the hardware in the OPOS configuration, MSPOS drivers, the EverLogic configuration file, and the individual OPOS drivers for each device will need to be installed.
  • The software should be downloaded only from the EverLogic articles, other software packages may not be compatible with EverLogic.


IMPORTANT:  Installation should only be attempted by someone with advanced understanding of PCs, associated hardware and Microsoft Windows.  It is recommended to reach out to EverLogic Support and schedule an appointment for the hardware install. Allot 30-90 minutes PER DEVICE for the installation. Administrator access to the network may be required.


Related Article: 

Equipment Supported by EverLogic