Star Micronics SM-T301I-DB50 39631910 Benutzerhandbuch

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It is possible to change the communication mode setting between Bluetooth and serial.  Please 
see below for details to select the proper communication mode for your application.

Bluetooth (iOS): 
  The display shows [Bluetooth(iAP)].  At the Bluetooth (iOS) mode, the printer can com-

municate with an iOS device over Bluetooth.

Bluetooth:
  The display shows [Bluetooth Mode].  At the Bluetooth mode, the printer can communi-

cate with an Android device or a device other than iOS devices over Bluetooth.

RS-232C:
  The display shows [UART Mode].  At the RS-232C mode, the printer can communicate 

with a device using the serial communication cable supplied with the printer.  When you 
connect the serial cable, the printer is automatically switched to serial communication 
from Bluetooth communication.

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When the iOS device wakes up from the sleep mode, it is required to turn the printer on again.  
It is required by the iOS specifications.  Therefore, it is impossible to use the Auto sleep function 
when the Communication mode of the printer is set to iOS mode [Bluetooth(iAP)].
At iOS mode [Bluetooth(iAP)], set the Auto sleep mode to “NO USE” or Auto OFF mode.