MMF ECD 230 Cash Drawer

The ECD 230 contains a parallel interface board which permits the user to connect the cash drawer in addition to a printer, to a single parallel port. The interface board allows the cash drawer to open upon receipt of one opening character code which is user selectable by means of 8 switches in a DIP style switch pack. An "On" switch position represents a binary 1, and an "Off" switch position represents a binary 0 in the character code. Switch #1 will be the least significant bit and switch #8 will be the most significant bit. Connection between computer and cash drawer is with a standard parallel printer cable; connection between drawer and printer is made with 36 pin female Centronics cable mounted horizontally to circuit board. Having the connectors on the interface board reduces cable complexity. This arrangement provides universal capability with any working computer to printer scheme.