EcLine EC-PM-80320D - Serial Interface

EC-PM-80320 User's Manual
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5.2.4 Serial Interface
EC-PM-80320 printer’s serial interface is compatible with RS-232C protocol, supporting RTS/CTS
and XON/XOFF handshaking protocol. Its connector is a DB-9 type connector and each pin’s
definitions are shown as below.
Table A-3 Pin assignments of the serial interface
Pin Number Signal From Description
2 RXD Host Receive data from Host
3 TXD Printer Sent control code X-ON/X-OFF and data to the Host
8 CTS Printer
“MARK” state means printer is too busy to receive data;
“SPACE” means printer is ready for receiving data.
5 GND — Signal GND
4 DTR Printer Signal terminal is ready
The default settings in serial connecting way are 9600bps, 8 bits, parity check disabled and 1 stop
bit.
EC-PM-80320 printer’s serial interface can be connected with the standard RS-232C connector.
When connecting with a PC, the connecting picture is shown as Figure 5-6. While connecting with
an IBM PC or a compatible PC, you can connect the cable as shown in Figure 5-7.
Figure 5-6 Connecting with 9-Pin PC
Figure 5-5 Sequence numbers of Serial connector
Printer 9-Pin connector Host 9-Pin connector
DTR
CTS
GND
TXD
RXD
DSR
DCD
CTS
RTS
GND
RXD
TXD
4
8
5
3
2
6
1
8
7
5
2
3
5 1
9 6
Note: ① “From” means the source where signal comes out.
② Signal level is EIA level.