2.3 Interface
2.3.1 Serial Interface
The serial interface of POS901 printer is compatible with RS-232C, supporting
DTR/DSR and XON/XOFF handshaking protocols. The socket is DB-9 female
socket, as showed in Picture 2.8,
6
9
1
5
Picture2.8
Pin
No.
Signal
Name
Signal
Source
Description
2
TXD
Printer
Printer transmits control code X-ON/X-OFF and
data to host
3
RXD
Host
Printer receives data from host
4
DSR
Host
This signal means whether the host can receive
data or not.
“
SPACE
”
means the host can receive
data;
“
MARK
”
means the host can not receive
data.
5
GND
——
Signal Ground
6
DTR
Printer
This signal means whether the printer is busy or
not.
“
SPACE
”
means the printer is ready to receive
data;
“
MARK
”
means the printer is too busy to
receive data.
8
RTS
Printer
The same with DTR signal (Pin6).
2.3.2 Ethernet Interface
The Ethernet interface socket for POS901 is standard JR45 socket, which
adapts with 10M/100M and Full-duplex or Half-duplex mode.
Protocol supports: Ethernet 802.3 protocol; Upper layer protocols including
TCP, ICMP, IP, ARP, HTTP.
PDF created with pdfFactory trial version
