Rs-232C Technical Specifications - NCR 7156 Owner's Manual

Chapter 5: Communication

RS-232C Technical Specifications

This section describes the pin settings for the connectors and the RS-232C interface
parameters. The RS-232C parameters are selected by setting the DIP switches on the
printed circuit board. See "Switch Settings" later in this chapter for the position of the DIP
switches. The RS-232C parameters must match those of the host.
Connectors
The illustration shows the RS-232C communication connector and pin assignments. The
connector is a 9-pin male D-shell connector and is located in the hollow cavity under the
printer at the rear.
The 7156 is always remotely powered. The illustration shows the power cable connector
and pin assignments. The power cable connector is a 6-pin mini DIN plug and is located in
the hollow cavity under the printer at the rear.
The following illustration shows the pin out designation for the cash drawer connectors.
The following table provides the pinout assignments for cash drawers one and two. The
cash drawer connectors are located at the rear of the printer.
Pin Number
1
2
52
Pin 1 Pin 6
Cash Drawer 1 Connector
Frame Ground
Drawer 1 Solenoid
Cash Drawer 2 Connector
Frame Ground
Drawer 2 Solenoid (Optional by
jumper: J13--2 to J14-2)
September 1997
7156 Owner's Guide