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❏ Serial interface specifications
• Input connector (25-pin serial)
RS-232C Pin assignments
Notes: 1. NC stands for no connection.
2. CHASSIS GND and GND are connected in the printer.
• Handshake protocol
One of the following four protocols can be selected:
- DTR protocol (Busy/Ready protocol)
- X ON/X OFF protocol I
- X ON/X OFF protocol II
- ETX/ACK protocol
• Logic level
ON=Space (0)=High:
12V (+3 through +15V)
OFF=Mark (1)=LOW:
-12V (-3 through -15V)
• Baud Rate
In the setup options, one of the following baud rates can be selected:
300, 600, 1200, 2400, 4800, 9600, 19200, and 38400 BPS.
13
25
1
14
75188 or equivalent
Output
330pF
Input
Inside printer
75189 or equivalent
Output signal
Input signal
+3 +15V
START
D1
D2
D3 D4 D5 D6 D7 D8
STOP
-3 -15V
Data frame
101
A. Specifications
PIN SIGNAL IN/OUT PIN SIGNAL IN/OUT
1 CHASSIS GND 14 NC
2 TXD OUT 15 NC
3 RXD IN 16 NC
4 RTS OUT 17 NC
5 CTS IN 18 NC
6 DSR IN 19 NC
7 SIGNAL GND 20 DTR OUT
8CD IN21NC
9NC 22NC
10 NC 23 NC
11 SRTS OUT 24 NC
12 NC 25 INC
13 NC