Epson LQ-1050 Technical Manual page 232

A.2.1.2 CN2
To
Use:
Number of pins: 26
Pin No. Signal
ERROR
1
2 PE
D6 (B4)
3
4 BUSY
5 D5 (B3)
ACKNLG
6
D4 (Par-dis)
7
I NIT
8
D3 (0/E)
9
10
STROBE
D7 (RXD)
12
13 RESET
– 12V
14
t
15 D 2 ( B 2 )
16
17
18 NC
19 DO (8/7)
+
20
—
22
23 SLCT IN
t
24
25 TXD
2 6
NOTES: 1. "Direction" of the signal flow is as viewed from the MONMA board.
2. The parenthesized descriptions in the "signal" column are for the 8143 interface board.
data between
Table A-1 3.
Dir.
Error
o
Paper end
o
Data bit 6
o BUSY (READY)
I Data bit 5
Acknowledge
o
I Data bit 4 (Parity disable)
Initialize
I
Data bit 3 (Odd/Even parity select)
I Strobe pulse
Data bit 7 (Serial signal input)
I
—
Signal GND
1
Reset
o
o
Data bit 2 (Bit rate select)
o
I Data bit 1 (Bit rate select)
—
Not connected
I Data bit O (8-bit/7-bit select)
12V + 12V DC
o
I Parallel/Serial select
I I
— —
1 1
I Select in
—
Signal GND
o
Tramsnit data
—
Signal
Pin Assignments
Description
—
A-3 1
board.