Ready/Busy - SATO S8400 Operator's Manual

Section 5: Interface Specifications

5.7 READY/BUSY

Ready / Busy is the hardware flow control method for the serial interface on the print engine.
Data received cannot be guaranteed, when print data (ESC+"A"~ESC+"Z") is sent from the host,
under the following conditions:
1) When the print engine is Offline
2) When an error has occurred in the print engine
Pin Assignments
1) DB-25 P
Printer
FG 1
SD 2
RD 3
RS 4
CS 5
DR 6
SG 7
ER 20
When using Windows Hardware Control:
3) DB-25 P
Printer
FG 1
SD 2
RD 3
CS 5
RS 4
DR 6
SG 7
ER 20
Interface Signals
Pin no. Signal Type
1
2
3
4
5
6
7
20
Page 5-6
DB-25 P
Host
1 FG
3 RD
2 SD
5 CS
4 RS
20 ER
7 SG
6 DR
DB-25 P
Host
1 FG
3 RD
2 SD
20 ER
6 DR
4 RS
7 SG
5 CG
Direction
FG -
SD Output
RD Input
RS Output
CS Input
DR Input
SG -
ER Output
2) DB-25P
Printer
FG 1
SD 2
RD 3
RS 4
CS 5
DR 6
SG 7
ER 20
4) DB-25P
Printer
FG 1
SD 2
RD 3
CS 4
RS 5
DR 6
SG 7
ER 20
Contents
Frame Ground
Send Data
Receive Data
Request to Send
Clear to Send
Data Set Ready
Signal Ground
Eqpt Ready (also used for
handling error status)
S8400 Series Operator's Manual
DB-9P
Host
2 RD
3 SD
8 CS
7 RS
4 ER
5 SG
6 DR
DB-9P
Host
2 RD
3 SD
4 ER
6 DR
7 RS
5 SG
6 CS