Print via POS .NET without opening cash drawer

I am preparing to create a POS application for a restaurant. I will use POS for .NET so I want the ability to access the printer and cash drawer without resorting to vendor-specific command strings. After looking at various printers, I have decided on the Epson TM-T88V. Now I need to choose a cash drawer. The Epson printer can connect to a cash drawer, freeing up a USB port on the computer. I want to connect the drawer via the printer, but it makes we wonder if I'll have full control开发者_运维问答 over the drawer or not. The POS software must first print orders to be handed to the cook before the customer pays, meaning that printing a receipt does not necessary mean opening the drawer. So I want to find a drawer that can be fully controlled via the CashDrawer class and will not prematurely open when printing the initial order.

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Opening the cash drawer is normally an independent device you have full control over.

The connection to cash drawer from receipt printer is just a convenience and to save cost in the cash drawer - it doesn't need a full USB/serial interface or power supply. In reality you control it separately. Obviously, the printer has special commands to talk to the cash drawer, but if you use OPOS/POS for .NET then this is abstracted and you don't need to care about the connection.