Appendix C: Interface Pin Outs - Star Micronics LC-100+ User Manual

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Appendix C: Interface Pin Outs

Parallel Interface
Pin Name
1 STROBE
2 DATA0
3 DATA1
4 DATA2
5 DATA3
6 DATA4
7 DATA5
8 DATA6
9 DATA7
10 ACK
11 BUSY
12 PAPER
13 SELECT
14-15
16 SIGNAL GND
17 CHASSIS
18 +5V
19 - 30 GND
31 RESET
32 ERROR
33 EXT GND
34 - 36
Optional Serial Interface
Pin Name
1 GND
2 TXD
3 RXD
4 RTS
5 CTS
6
7 GND
8 - 10
11 RCH
12 - 19
20 DTR
21 - 25
Goes low for 0.5 s when active.
These signals represent information for the 1st through 8th bit of parallel data,
respectively. Each signal is HIGH when data is logical 1, and LOW when logical
0.
10 s low to acknowledge receipt of data.
Printer sets line low when ready to receive data.
High when paper runs out.
High when printer is on-line.
Not used.
Signal ground
Chassis ground (isolated from signal ground)
+5V DC output from printer
Twisted pair ground return
Printer is reset when this signal goes low.
Low when printing cannot continue due to error.
External ground
Not used
Printer chassis ground
Data from printer
Data to printer
Always space
Space when computer is ready to send data. Printer ignores this signal.
Not used.
Signal ground
Not used.
Printer sets line to space when ready to receive data. Same signal as Pin 20.
Not used.
Printer sets line to space when ready to receive data.
Not used.
Function
Function