SATO CL4NX Programming Reference Manual page 749

When a device is moved away from this product while the device is receiving data from the product
This product will discard send data.
Sending procedures
Receiving procedures
"NG"
"NG"(0x4E 0x47)
is returned from API
Device
NFC touch
Segmentalize data into 64
bytes for sending
Final data
"OK"
Segmentalize data into 64
bytes for sending
Move NFC device away
from printer
747
This product
Return "OK"(0x4F 0x4B).
One buzzer
Send data from printer will be
discarded. No buzzer.
* Communication between printer
and NFC is disconnected, and
there is communication error in
between NFC.