Figure 3-2 Printer Rear Panel - Microcom 438T Operator's Manual

Getting Started
RS232 Port
Optional Cash
Drawer Port
AUX Port
USB Port
Power
Connection
3.2 Printer Power
The printer has a universal auto-sensing internal power supply that operates in the 100-240
VAC; 50-60 Hertz range. The three-prong female end of the power cord plugs into the
mating connector located on the back of the printer.
3.3 RS232 Serial Communication Interface
The printer provides a 9-pin female D-Sub connector, on the rear panel, for RS-232 serial
communication. The printer is configured as DCE (Data Circuit-terminating Equipment) so a
NULL modem cable is not necessary. A serial data cable is required to use serial
communications, refer to Table 3-1 below for correct cable configurations.
The factory settings, unless otherwise requested, are set at 115200 baud, 8 data bits, 1 stop
bit and no parity with hardware handshaking enabled. The baud rate is user selectable from
110 to 115,200 and hardware CTS/RTS handshaking.
3.3.1 RS-232 Serial Cables
The printer uses a standard through serial cable, typically referred to as a modem cable,
which may be purchased through Microcom Corporation or a local computer supply
company. A NULL-modem cable is not required because the printer is configured as DCE.
For a 25-pin serial communication port – Use a 25-pin female to 9-pin male cable.
3-2
Figure 3-2 Printer Rear Panel
External Media
Entry Slot
438T Operator's Manual - 880051-0102
Chapter 3