SII DPU-S245, Technical Reference

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3.4 BLUETOOTH INTERFACE SPECIFICATIONS
Bluetooth-supporting model can perform wireless communication by Bluetooth communication function.
When Data Input Mode of the function setting is set to Bluetooth/USB, internal Bluetooth module of the
printer operates regardless of its communication method.
When using the printer at the place with radio limitations like a hospital or an airplane, set Data Input Mode
of the function setting as Serial/USB or IrDA/USB to stop Bluetooth communication.
(1) General specifications
Item Specification
Bluetooth version 2.0+EDR comformity
Transmitted electric power class Class 2
Connection mode Peer-to-peer
Profile SPP
PIN code
1 *
None (default)
Device name
1 *
DPU-S245 (default)
*1: can be changed by the command
(2) Security
The printer does not set with PIN code or the Link Key in default. Bluetooth device uses security mode 1,
so no encryption is used.
Bluetooth device becomes security mode 3 if PIN code is set by Set default/Set test print header
command or Bluetooth Link Key selection of the function setting is set to Enable, and encryption is used.
When the setting of Bluetooth Link Key is Disable and selection of PIN code is canceled, Bluetooth
device becomes security mode 1 again, and no encryption is used.
(3) Input buffer
Capacity of input buffer for internal Bluetooth module is 3Kbytes. Received data is stored in the input
buffer of Bluetooth module, and then these data is to be processed after data transfer to the input buffer
of the printer.
If an error occurs, the printer stops receiving data after data that stored into input buffer of Bluetooth
until the error is cleared.
For the operation when an error occurs, the setting is changed by Busy Output When Error Occurs at
function setting.
(NOTE) Be aware that if the transmission buffer becomes full, the printer does not print
until the buffer is available.
(4) Link key saving
If the Bluetooth Link Key selection of the function setting is set to Enable, the printer saves the link key
to connect with the host device in the pairing process.
The host devices can be saved up to 10. When requiring to save the 11th host device, perform the
pairing after clearing the saved host devices in the printer.
To clear the all of saved host device data, set the Bluetooth Link Key selection of the function setting as
Disable after setting Data Input Mode of the function setting as Bluetooth. The printer clears the stored
host device data after the above process.