SPRT
７
11
BUSY
Out
HIGH level signal indicates
that the printer is BUSY and
can not receive data.
12
PE
Out
HIGH level signal indicates
that paper is end.
13
SEL
Out
Pulling up to HIGH level
signal by a resistor indicates
the printer is online.
15
/ERR
Out
Pulling up to HIGH level
signal by a resistor indicates
there is no error.
14,16,17
NC
---
No connection
18-25
GND
---
Grounding logical 0 level
Note:
（
1
）
“
In
”
denotes inputting to the printer
，
“
Out
”
denotes outputting
from the printer.
（
2
）
Signal level is TTL standard.
Fig. Pin Assignment of Parallel Interface
2.3.2 RS232 Interface Connection
The RS232 interface of POS5VI printer is compatible with RS232C standard,
supports RTS/CTS and XON/XOFF handshaking protocol, it uses DB25
socket (female), the pin order of the RS232 port is as below:
Fig. Pin Order of the Serial Port
The pin assignment of RS232 interface is shown as below:
Pin No.
Signal
Source
Description
2
RXD
Host
Printer receives data from host
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