Cino M230B - Manual (Page 11)

2
Programming Reference
VERSAJET
Communication Session
Initially, RS232, USB, Bluetooth, IRDA and Wi-Fi interfaces are all enabled by default. You can enable your
desired one or more interfaces by using
US ` SOH . However, the data transmission can only be processed
through one of them at a time. If the host sends data through one of these interfaces listed above when the
printer is standby, a communication session will start, which means the current active interface is occupied and
data transmission is allowed on this very interface only. If data is received from other interfaces during a
communication session, the printer will reply the sender a “busy” message “
0x5F 0x42 0x00 ” and ignore these
data.
A communication session is over when the idle timeout expires. The idle timeout defaults to 500 milliseconds
and can be changed by
US ` SOH . You can also use US ` STX to close a communication session before the
idle timeout expires. Only when the communication session has been over, will all these interfaces be free
again.
Moreover,
US ` NUL is used to get current communication configuration including the enabled interfaces and
the idle timeout value. You may refer to their “Command Descriptions“for more details.