Optional Parallel Interface Pins And Signal Names - Star Micronics SCP700 Series User Manual

Optional parallel interface pins and signal names

Pin
Signal Name
No.
1 STROBE
2 - 9 DATA 1 - 8
10 ACK
11 BUSY
12 PAPER OUT
13 SELECTED
14 —
15 N/C
16 SIGNAL GND
17 CHASSIS GND
18 +5VDC
19 - 30 GND
31 RESET
32
ERROR
(18)
(36)
Direction
Signals when data is ready to be read. Signal goes from HIGH to LOW (for at
IN
least 0.5 s) when data is available.
Information on the first eight bits of parallel data. Each signal is HIGH for logical 1
IN
and LOW for logical 0.
OUT 9 s LOW pulse to acknowledge receipt of data
OUT Printer is ready to receive data when LOW. HIGH indicates one of the following
conditions.
• Data being entered
• Printer off line
• Error condition
OUT Normally LOW, this signal goes HIGH when the printer is out of paper.
OUT HIGH when the printer is on line
IN This signal is not checked by printer.
— Not connected
— Signal ground
— Chassis ground (isolated from logic ground)
— +5V DC (max. 50mA)
— Twisted pair return signal ground level
IN LOW when printer is reset to power-on defaults
OUT Normally HIGH, this signal goes LOW to signal that printing is disabled due to an
error condition.
(1)
(19)
Function
167