Epson TM-P20 Technical Reference Manual page 49

Interface selection
Selectable from: automatic selection, fixed to wireless LAN/Bluetooth interface, or fixed to built-in USB.
 The TM-P20 has dual interfaces: a built-in USB interface and another interface selected by the cus-
tomer, wireless LAN or Bluetooth. The tables below describe the modes you can set for the printer
to control the dual interfaces.
 Automatic selection:
When the USB cable is connected with a host PC, the USB interface is preferentially selected. Other-
wise, the wireless LAN/Bluetooth interface is selected. Once the interface is selected, the selection
is enabled until the power is turned off or the USB cable is disconnected.
For Wi-Fi model
Interface mode
Automatic selection (initial setting)
Fixed to Wireless LAN
Fixed to built-in USB
For Bluetooth model
Interface mode
Automatic selection (initial setting)
Fixed to Bluetooth
Fixed to built-in USB
Command execution during offline
When this function is enabled, you can execute commands that are not related to mechanical operation while
the printer is off-line.
 Enabled (initial setting)
 Disabled
Wireless LAN Built-in USB
Available Available
Available Not available
Not available Available
Bluetooth Built-in USB
Available Available
Available Not available
Not available Available
Chapter 3 Advanced Usage
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