Honeywell MS 7120 - programmable by zapping barcodes?

Hi, anyone know if there is a configuration guide for this model of barcode scanner? I have borrowed one from a friend to get my business through Christmas, and it works fine except it needs a Carriage Return added to the "zap" so that it actually lists the item "zapped" onto the bill without the need for the cashier to press "Enter"...

If this is programmable through barcodes, I'd be interested to know where I can download from?

Thanks in advance.

Simon