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Description of the physical interface Appendix
368
T5023/5023+ - Programming Guide
DTR and RTS are deactivated:
By the activated signal CTS the connected device signals to the printer to send
data.
Software handshake with XON/XOFF protocol
In the XON/ XOFF protocol the printer signals to the connected device the rea-
diness to receive data by sending an X-ON. X-OFF signals that the printer is not
ready to receive data.
X-ON is transmitted
X-OFF is transmitted
By the activated signal CTS the connected device signals to the printer to send
data.
Software handshake with X-ON/X-OFF 2 protocol
The difference between the X-On/X-OFF 2 protocol and the X-On/X-OFF proto-
col is that the printer transmitt data to the connected device without CTS-check.
1.
When the status changes from ONLINE to STOP (stop key pressed or
printer error appears).
2.
When the available input buffer area is less than 512 bytes.
1.
When the printer has been switched on (power on).
2.
When the status changes from STOP to ONLINE.
3.
When the available input buffer area of the printer accept new data (at
least 1 kByte free input buffer) after having been disabled (less than 512
byte free input buffer).
1.
When the status changes from ONLINE to STOP (stop key or printer
error).
2.
When the available input buffer area is less than 512 bytes.