PLU File format

The PLU file format varies significantly between the ER-230 and the ER-380M, i also suspect that different EEPROM versions of the ER-380M also use different versions as I have seen byte offset in the data which indicates format differences

Values are Little Endian

ER-230 Version – Length 46 bytes

ER-380M v2.5 – Length 55 bytes

**Incomplete**

PLU Code

The PLU code can be simple numbers 1,2,3,4 etc or contain an entire barcode. For Barcodes the number is split in half to a high and low section

The upper and lower parts of the code should be string appended and remember to read Little Endian

long upper = data[0] + (data[1] << 8) + (data[2] << 16);
long lower = data[4] + (data[5] << 8) + (data[6] << 16) + (data[7] << 24);
String scode = String.Format("{0:D5}{1:D8}", upper, lower);
long code = long.Parse(scode);