Appendix C: Interface Pin Outs; Annexe C : Disposition Des Broches Pour Interfaces; Anhang C: Interface-Pin-Belegung; Appendice C: Uscite A Terminale Interfaccia - Star LC-240 User Manual

Appendix C: Interface Pin Outs / Annexe C: Disposition des broches pour interfaces
Anhang C: Interface-Pin-Belegung / Appendice C: Uscite a terminale interfaccia
Parallel Interface
Pin Name
Goes low for ≥0.5µs when active.
1 STROBE
2 DATA0 High when active.
3 DATA1 High when active.
4 DATA2 High when active.
5 DATA3 High when active.
6 DATA4 High when active.
7 DATA5 High when active.
8 DATA6 High when active.
9 DATA7 High when active.
10 ACK 10µs low to acknowledge receipt of data.
11 BUSY Printer sets line low when ready to receive data.
12 PAPER High when paper runs out. Can be disabled with the User Setup Utility.
13 SELECT High when printer is on-line.
14 AFXT Normally high.
15
16 SIGNAL GND Signal ground
17 CHASSIS Chassis ground (isolated from signal ground)
18 +5V +5V DC output from printer
19 - 30 GND Twisted pair ground return
31 RESET Printer is reset when this signal goes low.
32 ERROR Low when printing cannot continue due to error.
33 EXT GND External ground
34 - 35
36 SELECT IN Normally low.
109
Function
Not connected.
Not connected
Optional Serial Interface
Pin Name
1 GND Printer chassis ground
2 TXD Data from printer
3 RXD Data to printer
4 RTS Always low
5 CTS Low when computer is ready to send data. Printer ignores this signal.
6
7 GND Signal ground
8 - 10
11 RCH Printer sets line low when ready to receive data. Same signal as Pin 20.
12 - 19
20 DTR Printer sets line low when ready to receive data.
21 - 25
Function
Not connected.
Not connected.
Not connected.
Not connected.