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EPC1200 SERIES OPERATION MANUAL
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4.3.4- PC serial interface connection
Communications cable Ref. RS-232-6
Fig. 9. -
PC serial cable
NOTES:
•
Same configuration in the printer and in the host system should be set.
•
The communication protocol should be set properly so that the transmitted data can be
received without errors.
4.4- CENTRONICS PARALLEL INTERFACE
The EPC1200 complies the IEE1284 protocol (
NIBBLE MODE
).
Copyright © 1994 by the Institute of Electrical and Electronic Engineers, Inc.
4.4.1- Compatibility mode (Data transmission from host to printer: Centronics compatible)
*Any system sending data to the printer (PC, PLC, custom board, etcetera) is considered to be a
host system.
The compatibility mode supports compatibility with the Centronics parallel interface.
a) Specifications
•
Data transmission:
8-bit parallel
•
Synchronization:
nSTB signal externally provided
•
Protocol:
nACK (acknowledge) and BUSY signals
•
Signal levels:
TTL compatible
•
Connector (user side): JST
PHDR-24VS
(housing)
JST
SPHD-001T-P0.5
(terminal) or an equivalent model.
b) Switching between online and offline mode
The printer does not provide any switch for online/offline mode. The printer is in offline mode in
the following cases:
1) When powering ON or until the printer becomes ready for data transmission after it is
initialized by the reset signal from the interface
.
2) During the self-test.
3) When the platen is opened.
4) During paper advance using the paper advance button (paper feed).
5) When the printer stops printing due to ‘out of paper’.
6) When a temporal voltage abnormality happens to the power supply.
7) When an error occurs.
HOST EPC1200
FEMALE DB9
Housing: PHDR-24VS (JST)
Contact: SPHD-001T-P0.5
shield to chassis
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5
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TXD
RXD
GND
DTR
RTS
RXD
TXD
GND
DSR
CTS