Connectors And Signals - Star Micronics DP8340 User Manual

7-3.

Connectors and Signals

Pin No.Signal Name IN/OUT
1 STROBE
2-9 DATA1-8
10 ACK
11 BUSY
PAPER
12
OUT
13 SELECTED
14-15 N/C
SIGNAL
16
GND
CHASSIS
17
GND
18 N/C
19-30 GND
31 RESET
32 ERROR
33 EXT GND
34-36 N/C
Figure 7-3. Parallel Interface Connector (Printer side)
Signals when data is ready to be read.Signal
IN gose from HIGH to LOW (for at least 0.5
microsec.) when data is available.
These signals provide the information of the
first to eighth bits of parallel data.Each signal
IN
is at HIGH level for a logical 1 and at a LOW
level for a logical 0.
A 9 microsecond LOW pulse acknowledges
OUT
receipt of data.
When this signal goes LOW, the printer is ready
to accept data. When the printer is in one of
the conditions below."HIGH" is set.
OUT
1. Data being entered.
2. Off line.
3. Error condition.
This signal is normally LOW. It will go HIGH
OUT
if the printer runs out of paper.
OUT This signal is HIGH when the printer is online.
Unused
Signal ground.
Chassis ground, isolated from logic ground.
Unused
Twisted pair return signal ground level.
When this signal gose LOW, the printer is reset
IN
to its power-on condition.
This signal is normally HIGH. This signal goes
LOW to signal that the printer cannot print
OUT
due to an error condition.
Refer to Item 7-6 Emergency Suspension.
External ground.
Unused.
– 27 –
Function