AppendixC-E.frame Black #1
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Appendix C: Interface Pin Outs / Annexe C: Disposition des broches pour interfaces
Anhang C: Interface-Pin-Belegung / Appendice C: Uscite a terminale interfaccia
Optional Serial Interface
Pin
Name
Function
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
Not connected.
7
GND
Signal ground
8 - 10
Not connected.
11
RCH
Printer sets line low when ready to receive data. Same signal as Pin 20.
12 - 19
Not connected.
20
DTR
Printer sets line low when ready to receive data.
21 - 25
Not connected.
Parallel Interface
Pin
Name
Function
1
STROBE
Goes low for
≥
0.5
µ
s when active.
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
10
µ
s 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
Not connected.
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
Not connected
36
SELECT IN
Normally low.
