Xycom 4115T User Manual page 27

4115T Light Duty Industrial PC
Parallel Port
These ports are usually connected to printer. POS-478 includes two on-board parallel
ports, accessed through one 25-pin D-type female connector LPT1 (LPT1) and one
26-pin flat-cable connector CN13 (LPT2).
PIN Description
1 STROBE#
3 DATA 1
5 DATA 3
7 DATA 5
9 DATA 7
11 BUSY
13 PRINTER SELECT
15 ERROR#
17 PRINTER SELECT LN#
19 GND
21 GND
23 GND
25 GND
Serial Ports
POS-478 offers four high speed NS16C550 compatible UARTs with Read/Receive
16 byte FIFO serial ports (COM1/COM2/COM3/COM4).
Chapter 3 – POS-478 CPU Control Board and BIOS Setup
LPT1: (LPT1 DB-25 Female) Parallel Port Connector
CN20A: Serial Port DB-9 Male Connector (COM1)
PIN Description
1 DATA CARRIER DETECT (DCD)
2 RECEIVE DATA (RXD)
3 TRANSMIT DATA (TXD)
4 DATA TERMINAL READY (DTR)
5 GROUND (GND)
6 DATA SET READY (DSR)
7 REQUEST TO SEND (RTS)
8 CLEAR TO SEND (CTS)
9 RING INDICATOR (RI)
CN20B: Serial Port DB-9 Male Connector (COM2)
23
PIN Description
2 DATA 0
4 DATA 2
6 DATA 4
8 DATA 6
10 ACKNOWLEDGE
12 PAPER EMPTY
14 AUTO FORM FEED #
16 INITIALIZE
18 GND
20 GND
22 GND
24 GND
143926(A)