Parallel Interface; Connectors And Signals - Star Micronics SLIP SP298 SERIES Programmer's Manual

Parallel Interface

Connectors and Signals

Pin
Signal Name
No.
1 STROBE
2-9 DATA1-8
10 ACK
11 BUSY
12 PAPER OUT
13 SELECTED
14-15 N/C
16 SIGNAL GND
17 CHASSIS GND
18 LOGIC HIGH
19-30 GND
31 RESET
32 ERROR
33 EXT GND
34 COMPULSION
35 +5VDC
IN/OUT
Signals when data is ready to be read. Signal goes from HIGH to LOW (for at
IN
least 0.5 microsec.) when the data is available.
These signals provide the information of the first to eighth bits of parallel data.
IN
Each signal is at HIGH level for a logical 1 and at a LOW level for a logical 0.
OUT A 9 microsecond LOW pulse acknowledges receipt of the data.
When this signal goes to LOW, the printer is ready to accept data. When the
printer is in one of the conditions below, "HIGH" is set.
OUT 1. Data is being entered
2. Off line
3. Error condition
This signal indicates the status of the paper sensor.
[In Star mode]
This signal goes to HIGH when either the TOF or the BOF sensor detects that
there is no paper. The signal will go to LOW when both the TOF and BOF
OUT
sensor detect that there is paper installed.
[In the ESC/POS mode]
This signal outputs the status of the sensor selected using the <ESC> "c3"
command.
OUT This signal is HIGH when the printer is online.
Unused
Signal ground
Chassis ground, isolated from logic ground
3.9 k pull-up
Twisted pair return the signal to ground level.
This becomes a reset signal when DIP switch 1 is set to ON. (See page 4 for
IN details.) When this signal goes to LOW (for at least 0.5 microsec.), the printer is
reset to its power-on condition.
This signal is normally HIGH. This signal goes to LOW to signal that the printer
OUT
cannot print due to an error condition.
External ground
OUT Compulsion signal (See page 20.)
2.2 k pull-up
Function
17