Specifications

EPC-8 Hardware Reference
C C
C-2
RS-422/485 Port (COM2)
The modified RS-422/485 serial port is a female DB-9 connector.
Pin Function
1 RTS
2 DTR
3 RXD-
4 TXD-
5 GND
6 CTS
7 DSR
8 RXD+
9 TXD+
Table C-2. COM2 RS-422/RS485 Port Pin-out.
Parallel Port
The DB-25 LPT1 parallel port connector is defined as:
Pin Signal Pin Signal
1 Strobe 14 Auto line feed
2 DB0 15 Error
3 DB1 16 Initialize printer
4 DB2 17 Select in
5 DB3 18 Signal ground
6 DB4 19 Signal ground
7 DB5 20 Signal ground
8 DB6 21 Signal ground
9 DB7 22 Signal ground
10 Acknowledge 23 Signal ground
11 Busy 24 Signal ground
12 Paper end 25 Signal ground
13 Select
Table C-3. DB-25 Pin-Out.
13
1
25
14
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