Star TSP400 Installation Manual page 32

Connectors and Signal Names (Serial Interface)
13
25
RS-232C Interface
Pin no Signal name
1 F-GND
2 TXD
3 RXD
4 RTS
5 CTS
6 N/C
7 S-GND
8 N/C
9 ~ 10 N/C
11 RCH
12 N/C
13 S-GND
14 FAULT
15 Multi-Printer TXD OUT
16 Multi-Printer DTR OUT
17 ~ 19 N/C
20 DTR
21 ~ 22 N/C
23 ~ 25 N/C
Direction Function
– Frame ground
OUT Outgoing data
IN Incoming data
OUT Request To Send: The printer sets this signal
to "SPACE" when it is ready to send.
IN The host sets this signal to "SPACE" when it
is ready to send. NOTE: The printer does not
monitor this signal.
Not used
– Signal ground
Not used
Not used
OUT The printer sets this signal to "SPACE" when
it is ready to receive. This pin outputs the
same signal as pin 20, to which it is con-
nected.
Not used
– Signal ground.
OUT The printer sets this signal to "MARK" to
indicate an error condition (machine error, no
paper, etc.).
Diode gate TXD
Diode gate DTR
Not used
OUT Data Terminal Ready: The printer sets this
signal to "SPACE" when it is ready to re-
ceive.
Not used
Not used
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