4.3.4- PC serial interface connection
Communications cable Ref. RS-232-6
HOST
FEMALE DB9
2
RXD
3
TXD
5
GND
6
DSR
8
CTS
shield to chassis
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:
• Synchronization:
• Protocol:
• Signal levels:
• Connector (user side): JST PHDR-18VS (housing)
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.
EPC1200
Housing: PHDR-24VS (JST)
Contact: SPHD-001T-P0.5
20
TXD
21
RXD
23/24
GND
19
DTR
22
RTS
8-bit parallel
nSTB signal externally provided
nACK (acknowledge) and BUSY signals
TTL compatible
JST SPHD-001T-P0.5 (terminal) or an equivalent model.
EPC1200 SERIES OPERATION MANUAL
Fig. 9. - PC serial cable
.
14/56
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