SATO 9001226(A) Service Manual page 25

3.2 RS232C HIGH SPEED SERIAL INTERFACE (Cont'd)
3.2.4 X-ON/X-OFF
This transmission protocol informs the host if the printer can receive data or not, by sending the "XON" (Hex
11H) or "XOFF" (Hex 13H) code.
When the print data (STX ESC+"A"~ ESC+"Z" ETX) is sent from the host in the conditions below, received
data may be incorrect.
1) When the printer is Offline
2) When an error has occurred in the printer
Pin Assignments
1) Host with DB-25 P terminal
Printer
FG 1
SD 2
RD 3
RS 4
CS 5
DR 6
SG 7
ER 20
Note:
Depending on the host used, it may need to loop CS and RS (maintaining at "High" level) on the host side.
Therefore, make sure to re-check the host before use.
Input/Output Signals
Pin no. Signal Type
1
2
3
7
TG3 Series Service Manual
Host
1 FG
3 RD
2 SD
5 CS
4 RS
20 ER
7 SG
8 DR
Direction
FG -
SD Output
RD Input
SG -
Section 3: Interface Specifications
2) Host with DB-9 P terminal
Printer
FG 1
SD 2
RD 3
RS 4
CS 5
DR 6
SG 7
ER 20
Description
Frame ground
Data transferred from the printer to the host
Data transferred from the host to the printer
Signal ground
Host
FG
1
RD
2
SD
3
CS
8
RS
7
ER
4
SG
5
DR
6
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