Star Micronics DP8340 - Manual (Page 31)

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