Table of Contents
Advertisement
13-2. RS-232C Connector
Pin No.
Signal name
1
F-GND
2
3
4
5
6
7
S-GND
8~19
20
21~24
25
Direction
—
TXD
OUT
RXD
IN
RTS
OUT
N/C
DSR
IN
—
N/C
DTR
OUT
N/C
INIT
IN
13
25
Frame ground
Transmission data
Receive data
Always SPACE
Not used.
Not used.
Signal ground
Not used.
A) DTR/DSR communication mode
Indicates whether data receive from host is enabled
or disabled.
Space: Receive enabled
Mark: Receive disabled
B) X-ON/X-OFF communication mode
Always space, except during following condi-
tions:
• Period between reset and communication ena-
bled
• During self printing
Not used.
When DIP Switch 3-8 = OFF;
Status of this signal is not checked.
When DIP Switch 3-8 = ON;
This is an externally reset signal.
A space above 1 ms pulse width engages reset.
– 55 –
Function
1
D-sub 25 Pin
14
Advertisement
Table of Contents
