D-F10137 NP-2651/3651 Product Spec. Rev.0.01(Provisional)
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3.2 Interface [Serial (RS-232C compliance)]
1) Synchronization
:Asynchronous
2) Transmission speed
:9600,19200,38400,115200bps(by user selection)
3) 1 word consists of
Start bit
:1 bit
Data bit
:7 or 8bit (user selection)
Parity bit
:odd, even or no parity(user selection)
Stop bit
:more than 1bit
4) Signal Polarity
RS-232C
Mark
=Logic"1" /OFF (-3V~-12V)
Space
=Logic"0" /ON (+3V~+12V)
5) Receive Data (RXD Signal)
Mark
=1
Space
=0
6) Transmit data(TXD signal)
*1
Mark
=1
Space
=0
XON/XOFF when controlled.
《
DC1
》
〔
11
〕
h code
，
XON :possible to receive data
*2
《
DC3
》
〔
13
〕
h code
，
XOFF:impossible to receive data
*3
7) Receive Control (RTS signal)
Mark
:impossible to receive data
*4
Space
:possible to receive data
*2
8) Transmit-Permission(CTS signal)
Mark
:impossible to transfer data.
Space
:possible to transfer data.
*1
：
Data transmission is not operated during receiving data. When receiving data sequentially,
Data transmission will be operated after receiving data stops. Also, data transmission(Timing) may
differ depending on the condition of receiving data or during printing.
*2
：
Occurs when after turning the power ON or self-diagnostic print and after software reset or when
releasing receive buffer full or rewriting firmware.
*3
：
Occurs when receive buffer is full or after receiving memory switch setting command and after receiving
software reset command or when firmware rewrite.
*4
：
Occurs when turning the power OFF or during self-diagnostic print and while software reset or when
receive buffer full or after receiving memory switch setting command or when rewriting firmware.
