SECTION 6: ON LINE
SATO HT200e Page 6-13
3. Signal for incoming and outgoing:
4. Protocol
1) Ready / Busy
This communication protocol receives print data only through the control of hardware sig-
nal
without software procedure.
ER signal will be used for the control of Ready/Busy.
“High”
→
Ready
“Low”
→
Busy
Receiving data can not assured in the following conditions when:
a)Printer is in off-line mode.
b)Printer error is occurred.
5. Code for control:
Pin
No.
Signal Direction Description
1FG
－
Frame ground
2 SD Out Data sent from a printer to a host.
3 RD In Data sent from a host to a printer
4 RS Out It consistently remains high level.
5CS
－
Un-use
6 DR In It should consistently retain high level.
7SG
－
Signal ground
9 ER Out “High” shows a condition that a printer can receive.
“Low” is a general mode.
Name Code Action Note
STX 02H Start of text data
ETX 03H End of text data
ESC 1BH Command
EOT 04H End of communication It can be used when font is
registered.
SOH 01H Command for specifying medium
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