AA1720, AA1721 Frequently Asked Questions
I have a custom application requiring connecting a 68 way SCSI connector
to a 25 way D-sub. What is the pin out, wiring schedule for this cable?
The connections are
25 way connector
Pin
|
Name
|
Description
|
68 way connector
Pin
|
|
1
|
/REQ |
Request |
28 |
|
2
|
/MSG |
Message |
25 |
|
3
|
I/O |
Input, Output |
63 |
|
4
|
/RST |
Reset |
58 |
|
5
|
/ACK |
Acknowledge |
57 |
|
6
|
BSY |
Busy |
56 |
|
7
|
GND |
Ground |
31 |
|
8
|
DB0 |
Data bus 0 |
|
|
9
|
GND |
Ground |
|
|
10
|
DB3 |
Data bus 3 |
44 |
|
11
|
DB5 |
Data bus 5 |
46 |
|
12
|
DB6 |
data bus 6 |
47 |
|
13
|
DB7 |
Data bus 7 |
48 |
|
14
|
GND |
Ground |
|
|
15
|
C/D |
Control, data |
61 |
|
16
|
GND |
Ground |
|
|
17
|
/ATN |
Attention |
20 |
|
18
|
GND |
Ground |
|
|
19
|
/SEL |
Select |
60 |
|
20
|
PARITY |
Data parity |
49 |
|
21
|
DB1 |
Data bus 1 |
42 |
|
22
|
DB 2 |
Data bus 2 |
43 |
|
23
|
dB 4 |
Data bus 4 |
45 |
|
24
|
GND |
Ground |
|
|
25
|
TMPWR |
Termination power |
51 |
Is this the correct cable to connect to the standard 25 pin printer port
on a computer then into a scanner, Fujitsu M3097DG, which has a 68 pin port?
Unfortunately this will not work. The 68 pin connector on the Fujitsu M3097DG
is a "SCSI" type connector and not a parallel port type. It should be
connected to the relevant SCSI input. SCSI inputs are usually an optional extra
which should be specified when buying your computer or as an upgrade.
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