15
Please see
Section 5.1
for parallel port cabling information,
Section
5.2
for DB-25 serial port cabling information, or
Section 5.3
for RJ-45
cabling.
Appendix A
provides recommended cabling pinouts.
Parallel ports on Print Master have DB-25 female connectors. A
straight, DB-25 male-to-male cable is required between each IBM PC
computer (or compatible) and a parallel port on Print Master. A DB-
25 male-to-Centronics cable is required between each printer having
a Centronics connector and Print Master (i.e., IBM PC to Centronics
cable).
CAUTION: Some standard EIA-232 DB-25 cables may have pin 1
grounded to connector shell. Since Pin 1 is a strobe line in Centronics
protocol, this ground must be removed if the cable is used between a
PC and Print Master.
The pin layout for the DB-25 connector is similar to IBM PC parallel
connector and uses the following signals:
STANDARD TTL LEVELS
SIGNAL DB-25
NAME PIN NO.
- Strobe 1
+ Data Bit 0 2
+ Data Bit 1 3
+ Data Bit 2 4
+ Data Bit 3 5
+ Data Bit 4 6
+ Data Bit 5 7
+ Data Bit 6 8
+ Data Bit 7 9
- Acknowledge 10
+ Busy 11
+ P. End (Out of Paper) 12
+ Select 13
- Auto Feed 14
- Error 15
- Initialize Printer 16
- Select Input 17
Ground 18-25
