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Installing the SureMark Printers
Installing for RS-232/RS-485 Communication
1. Power the system off and disconnect the RS-232 power supply.
2. Locate the rear cable connectors.
3. If you are using the RS-232 communication port:
a. Check the settings on the RS-232 mode switch, which is near the rear
cable connections. (See Figure 4.) See “RS-232 Communication Mode
Selections” on page 23 for information on switch settings.
Note: If the RS-232 communication cable has only 3 wires or if the system
output is 3 pins (2 signals and a ground), you must use XON/XOFF
mode.
b. Connect the power supply to the printer.
4. Connect the RS-485 or RS-232 communication cable to the correct port.
RS 232
Mode
Switch
Cash
Drawer
Port
Power Supply
Port (RS 232
Only)
RS 232
Port
RS 485 Port
1
2
OFF
Figure 4. Cable Connectors and RS-232 Settings Switch for Thermal/Impact SureMark Printers. (View is from the
bottom rear of the printer.)
updated March 18, 2002
12 SureMark DBCS User’s Guide