Operator`s manual

12
3.1.1 Interfacing
The interface selection process in the printer occurs by data detection. Once
detected, the receiving port is set ‘active’. It will remain active, as long as data
flow continues; however, if data inactivity occurs and the Host Timeout Value
(see Section 4.1.5) is exceeded the selection process will automatically be
repeated. When timeout occurs before a complete label format has been
received, all data will be lost and the format must be sent again. To change an
active port immediately, cycle power ‘On’ and ‘Off’.
Parallel Port:
The parallel port interface has two menu selectable modes of operation: uni-
directional or bi-directional. Uni-directional mode is forward channel
communication and requires a Centronics

cable with a 36 pin male connector.
Bi-directional mode is IEEE 1284 Compliant, using forward and reverse
channel communications. In this mode, data can be sent to the host provided it
is also IEEE 1284 Compliant and has supporting software. This mode requires
is an IEEE 1284 cable with a Centronics

36 pin male connector.
Serial Port:
The serial port interface supports RS-232C and, if equipped, RS-422
communications. The list of printer settings below are menu selectable and be
set must match the host computer settings; see Section 4.1.5.
•
Baud Rate (communication speed)
•
Word Length
•
Word Parity
•
Number of Stop Bits
•
Handshaking Protocol
In addition to these settings, the serial interface cable must a have specific pin
configuration (pin-out) for proper data exchange. The different serial cables,
their respective pin configurations, suggested applications and part numbers are
shown on the next page (contact your reseller for ordering information).