SATO s84ex - Ready;Busy; Connecting Diagram; Explanation of Input;Output Signal

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3.2 READY/BUSY
In this protocol, print data are controlled by a hardware signal only without software procedures. Single item receive or multiple
receive can be switched on the interface mode of the printer.
When the print data (STX <A>~ <Z> ETX) has sent from the host in the conditions below, the received data will not be accurate.
1) When the printer is in offline state.
2) When an error has occurred in the printer.
Connecting diagram 3.2.1
Explanation of input/output signal 3.2.2
Pin number
Signal
name
Direction
Description
2
RD
Input
Data from the host to the printer
3
SD
Output
Data from the printer to the host
4
ER
Output
Data terminal ready
5
SG
－
Signal ground
6
DR
Input
Data set ready
7
RS
Output
Send request
8
CS
Input
Clear to send
1）DB-9P
Printer
Host
CD
1
1
CD
RD
2
3
SD
SD
3
2
RD
ER
4
6
DR
SG
5
5
SG
DR
6
4
ER
RS
7
8
CS
CS
8
7
RS