Parallel Interface; General Specifications; Connector Signals - Star Micronics NX-1020 Technical Manual

GENERAL SPECIFICATIONS

4.

Parallel Interface

4-1. General Specifications
Item
Synchronization System
I/F Protocol
Logic Level

4-2. Connector Signals

Pin No. Signal Name
1
2
3
4
5
6
7
8
9
10
11
12
13
14,15
16 SIGNAL GND
17 CHASSIS GND
18
19 ~ 30
31
32
33
34,35
36 SELECT IN
Fig. 1-5 Timing Charts of Parallel Interface
STROBE Goes from high to low (for≥ 0.5µs) when active
DATA1 High when active
DATA2 High when active
DATA3 High when active
DATA4 High when active
DATA5 High when active
DATA6 High when active
DATA7 High when active
DATA8 High when active
ACK 9µs low pulse acknowledges receipt of data
BUSY Low when printer ready to receive data.
PAPER High when paper out. Can be disabled with EDS setting.
SELECT High when printer is on-line
NC
Signal ground
Chassis ground (isolated from signal ground)
+5V +5V DC output from printer
GND Twisted pair ground return
RESET When this input signal is low, printer is reset
ERROR Outputs low when printer cannot continue, due to an error
EXT GND External ground
NC
Always high
Specifications
Via externally supplied STROBE pulse
By ACK and BUSY signals
Compatible with TTL level
Function Description
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