Redy/Busy; Connecting Diagram; Explanation Of Input/Output Signal - SATO CL4NX Programming Reference Manual

3.2

REDY/BUSY

In this protocol, print data is controlled by hardware signal only without software procedures.
When the print data (STX <A> - <Z> ETX) is sent from the host under 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.

3.2.1 Connecting diagram

1）DB-9P
Printer
CD 1
RD 2
SD 3
ER 4
SG 5
DR 6
RS 7
CS 8

3.2.2 Explanation of input/output signal

Pin
number
2
3
4
5
6
7
8
Host
1 CD
3 SD
2 RD
6 DR
5 SG
4 ER
8 CS
7 RS
Signal
Direction
name
RD Input Data from the host to the printer
SD Output Data from the printer to the host
ER Output Data terminal ready
－
SG Signal ground
DR Input Data set ready
RS Output Send request
CS Input Clear to send
Description
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