EDE1400 查看數據表（PDF） - Unspecified
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EDE1400 Datasheet PDF : 7 Pages
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EDE1400 using only a wire; data from a PC must first go through a RS232 to TTL voltage-level
converter such as the MAX232. Ordinarily the "Flow" pin (Pin 17) is left unconnected; this pin is
used only when connecting the EDE1400 to a PC. It provides a hardware handshaking signal. This
signal is not necessary in ordinary asynchronous serial communication.
CONNECTION TO PRINTER
The EDE1400 requires an 11-wire connection to the printer. Eight of these are data lines, D0
through D7. The other three are the STROBE line, the BUSY line, and Ground. The following table
illustrates the interface between the EDE1400 and the parallel printer's Centronics port:
Signal Name
D0
D1
D2
D3
D4
D5
D6
D7
STROBE
BUSY
GND
EDE1400 Pin #
Pin 6
Pin 7
Pin 8
Pin 9
Pin 10
Pin 11
Pin 12
Pin 13
Pin 1
Pin 18
Pin 5
D-25 Cable Pin #
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 1
Pin 11
Pins 18-25
Connector on Printer
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 1
Pin 11
Pins 19-30,33
Table One: EDE1400 Connection to Printer
Only one Ground (GND) pin needs to be connected from the EDE1400 to the printer. All other pins
from the printer that are not shown in this table may be left unconnected.
USE OF THE EDE1400 WITH A BASIC STAMP™
The schematic on the following page illustrates the connection of a BASIC Stamp™ I to a printer
using the EDE1400:
Copyright © 1997 E-Lab Digital Engineering, Inc. All Rights Reserved. Page 3
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