SATO CL4NX Programming Reference Manual page 750

When CRC error occurs
This product will discard received data from printer then return "NG_CRCCHECK".
Sending procedures
When NFC communication buffer over error occurs
This product will discard received data then return "NG_OTHER".
Sending procedures
When UNCOMPRESS error occurs
The printer discards received data and returns "NG_UNCOMPRESS(CANNOT MALLOC)" or
"NG_UNCOMPRESS(SIZE OVER)".
Device
NFC touch
Segmentalize data into 64
bytes for sending
Final data
"NG_CRCCHECK"
Device
NFC touch
Segmentalize data into 64
bytes for sending
Final data
"NG_OTHER"
748
This product
Returns "NG_CRCCHECK"
(0x4E 0x47 0x5F 0x43 0x52 0x43
0x43 0x0x48 0x45 0x43 0x4B).
3 buzzers
This product
Returns "NG_OTHER"
(0x4E 0x47 0x5F 0x4F 0x54 0x48
0x45 0x52 )
3 buzzer