Brady 200M - Manual (Page 57)

Signal Descriptions
The following chart provides a description of each of the pins in
the parallel connector. A standard parallel data cable will provide
the required interconnection between the computer and the
printer.
IEEE 1284-B Connector Pin Assignments
Pin No. Description
1 The nStrobe printer input has internal 3.3 k9pull-up resistors to 5 V 1
OL
= 1.5 mA) and is
designed to receive a signal driven open collector V OL <= 0.8 V. This pin is a signal
from the host computer. The nStrobe input is debounced on a LOW going edge to
require an active width greater than 0.5 µ s before data is latched.
2 - 9 Data inputs have TTL input characteristics with internal 3.3 k9 pullups and represent 1
TTL unit load or less. The Data inputs are positive logic with a HIGH voltage level
corresponding to a logic 1. Pin 2 through Pin 9 = D0 through D7 respectively.
10 The nAck output is an active LOW pulse used to indicate termination. nAck is a driven
open collector with a 3.3 k9 internal pull-up. The output sinks 7 mA to a V
OL
<= 0.4 V.
11 The Busy output is active HIGH whenever the printer cannot accept data due to any
normal or abnormal condition, including buffer overflow, head open, over temperature,
and media error conditions. Busy is a driven open collector with a 3.3 k9 internal pull-
up. The output sinks 7 mA to a V
OL
<= 0.4 V.
12 The PError signal is active HIGH whenever the printer is out of media or ribbon.
13 The Select signal function is determined by an additional configuration option which
becomes active when the port is present. In the default condition, Select is active HIGH
whenever the parallel port is powered up and the parallel port is enabled. In the non-
default condition, Select will go active LOW whenever the printer is printing.
14 nAutoFd (not connected)
15 Not defined
16 Logic Gnd
17 FRAME GROUND is at the same potential as Logic Gnd (pin 16).
18 FUSED 5 V - 1 A maximum.
19 - 30 SIGNAL GROUNDS are the Logic Grounds and Returns for all input and output signals.
31 - 35 NOT USED - These leads should be left unconnected.
36 NSelectIn (not connected)
Interconnections M-Series User ’s Guide
5-6