Megatron TP UP-NH User Manual - page 6
24 25
COM1.
BIT4:
CTS allow for transmitting” input high (ok).
BIT5:
DSR data ready” input high (ok).
BIT7:
RLSD receipt route signal testing” input high(ok).
2.3.2
Auto Power Off
This printer provides auto power cut off function. If no paper feed and printing
function performed more than 10 seconds, power will be automatically cut off.
2.4
Indicator & Function Key
There are two indicators and two switch buttons on the panel of TP UP-NH printer.
Power Indicator marked with P and Status indicator marked with SEL. When SEL
indicator in light or flash , it means printer is wrong otherwise means printer is
normal. For power connection, press SEL button; for paper feed press LF button.
see figure 2-8 below:
Figure 2-8
1.
Self-test
To start self-test, press and hold down LF button and SEL button as well while
power on, when power indicator light, release both buttons, then self-test sample
will be printed.
2. Paper feed
Press and hold down LF button to start paper feeding and release it to stop paper
feeding.
2.5
Connecting of Interface (parallel port)
TP UP-NH adopts DB-25 parallel port which is compatible with PC
′s printer port.
1. The Pin Assignment of DB-25 is shown as follows:
PinN
o
Signal I/O
Description
1
/STB
In
Strobe pulse, to read data. Reading occurs at falling edge.
2
D0
In
Data line: D0
3
D1
In
Data line: D1
4
D2
In
Data line: D2
5
D3
In
Data line: D3
6
D4
In
Data line: D4
7
D5
In
Data line: D5
8
D6
In
Data line: D6
9
D7
In
Data line: D7
10
/ACK
Out
Acknowledge pulse. Printer is ready to accept data. It takes no less
than 10
µs to change from high level to low level.
11
BUSY
Out
High level signal indicates that the printer is Busy and can not
receive data while low level is able to receive data.
12
PE
Out
High level signal indicates that paper running out. Low level signal
indicates
otherwise.
13
SLCT
Out
Selection, pull up to 5V.
14
-------
-----
No
connection.
15 /ERRO
R
Out
Pull up to
5V
16
/INIT
In
Low level signal (no less than 3ms) for control of printer power.
17 ------- -----
No
connection.
18
- -------
-----
Grounding.
25
2. The signal timing chart in parallel port is as follows:
Figure 2-9 Signal timing chart of parallel port
2.6 Connecting of Interface (serial port)
TP UP-NH adopts serial port which is compatible with RS232C for DB-25 socket
(female type in printer side)
1. DIP Switch Setting
K1-K6 for setting of baud rate, data bit, stop bit and parity. Default settings are
all on off position, users can change setting according to the following tables: