Epson PP 405 Benutzerhandbuch Seite 63

Additional Information
After Power-ON DTR and RTS are activated and the printer is ready to receive
data.
XOFF is sent, when the interface buffer has only space left for 256 more charac-
ters. XOFF is sent again, at a level of 128 characters buffer space. Further
incoming data will be stored until the interface buffer is full. All data sent in
addition will get lost.
XON is sent when the interface buffer provides space for a minimum of 512
characters.
XON/XOFF can only be sent successfully when CTS is at active state.
When the CTS Mode is set to "CTS ignore" CTS is allways in the active state.
XOFF will be sent immediately if local mode is entered.
XON is sent again, if local mode is left and a minimum of 512 byte interface
buffer is available.
Appendix A System Interface Description
A-7
Appendix A System Interface Description
2.3 Serial Interface with RS-422
This interface typ requires the signal lines.
- Pin 1 Protective Ground (PG)
- 3 Receive Data (RDA)
- 9 Send Data (SDA)
- 10 Not Send Data (SDB)
- 18 Not Receive Data (RDB)
Standard Connection
A-8