6.0 Standard Interface Pinouts
SERIAL PINOUTS
RS232 (standard) RS232 (PC type)
PIN FUNCTION PIN FUNCTION
2 Printer Transmit 2 Printer Receive
3 Printer Receive 3 Printer Transmit
7 Ground 5 RTS (+5V)
5,20 Printer Ready 6 DTR (printer ready)
4,22 RTS (+5V) 7 Ground
8 CD (+5V)
TYPICAL RS232 PIN CONNECTIONS
(standard) (standard) (pc type) (pc type)
25 PIN PC 9 PIN PC 25 PIN PC 9 PIN PC
BOCA CPU BOCA CPU BOCA CPU BOCA CPU
2 ---- 3 RXD 2 ---- 2 RXD 2 ---- 2 TXD 2 ---- 3 TXD
3 ---- 2 TXD 3 ---- 3 TXD 3 ---- 3 RXD 3 ---- 2 RXD
7 ---- 7 GND 7 ---- 5 GND 5 ---- 5 CTS* 5 ---- 8 CTS*
20 ---- 6 DSR 20 ---- 6 DSR 6 ---- 6 DSR 6 ---- 6 DSR
20 ---- 5 CTS* 20 ---- 1 CD* 7 ---- 7 GND 7 ---- 5 GND
20 ---- 8 CD* 20 ---- 8 CTS* 8 ---- 8 CD* 8 ---- 1 CD*
* optional connection
PARALLEL
PIN FUNCTION
1 Strobe (negative)
2-9 Data (DB0 - DB7)
10 ACK (negative)
11 BUSY
12 PAPER OUT
13 SELECT (negative)
15 ERROR (negative)
18 Ground
RS422 DIFFERENTIAL INTERFACE PINOUTS (422190-9)
FAA LOR
PIN FUNCTION PIN FUNCTION
1,7 Ground 1,7 Ground
19 Printer Transmit - 19 Printer Transmit +
25 Printer Transmit + 25 Printer Transmit -
15 Printer Receive - 15 Printer Receive +
17 Printer Receive + 17 Printer Receive -
11 Ready + 11 Ready +
10 Ready - 10 Ready -
NOTE: The above pinouts may vary on certain printers due to special customer request.
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