SATO WS412DT - Ready;Busy; Line Connection; Input and Output Signals

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4.2 READY/BUSY
This communication protocol controls the reception of print data by the control of hardware signal only.
Single item buffer and multi item buffer can be toggled by the <I2> command.
When the print data (STX ESC+“A”~ ESC+“Z” ETX) has been sent from the host computer in the conditions below,
the accuracy of received data will not be guaranteed.
1) When the printer is in offline state.
2) When an error has occurred in the printer.
4.2.1 Line Connection
4.2.2 Input and Output Signals
PIN No.
Signal
I/O
Description
2
RD
Input
Data from the host computer to the printer
3
SD
Output
Data from the printer to the host computer.
4
NC
-
Floating.
5
SG
-
Signal ground.
6
DR
Input
Data Terminal Ready
7
RS
Output
Send request
8
CS
Input
Ready to send
DB-9P
Printer
Host
1
1
CD
RD
2
3
SD
SD
3
2
RD
SG
5
5
SG
DR
6
4
DR
RS
7
8
CS
CS
8
7
RS
9
9
RI