2.3.3 USB Interface
The USB interface socket for POS901 is standard USB-B socket, which abides
by printer type protocol or virtual serial interface type protocol. The kind of
protocol which is used during the printer working
–
printer type or virtual serial
interface type, can be set up by setting softwar.
2.3.4 Cash Drawer Interface
The cash drawer interface of POS901 adopts RJ-11 6-pin socket, as
Picture2.9 shows:
Picture2.9 Cash Drawer Interface
The pin assignment is as below
：
Pin No.
Signal
Direction
1
Chassis Ground
——
2
Cash drawer driver signal 1
Out
3
Cash drawer on/off status signal
In
4
+24V DC
——
5
Cash drawer driver signal 2
Out
6
Signal ground
——
2.4 Buttons and Indicators
There are two buttons, one inner buzzer and three indicators on POS901
printer.
【
MODE
】
Self-test button
. Press the button over two seconds to print the
self-test of printer.
【
FEED
】
Paper-feeding button
. The function status on/off of this button can
be set by print command. During the fuction of this button is on, paper feeds
into the printer when the
【
FEED
】
button is pressed; while paper stops feeding
into the printer when the button is loosen.
BUZZER
is used to indicate the error status and paper cutting. The function of
buzzer can be set to error alarm, paper cutting indicating or both available
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