6
Example:
Read the content (0x3E) of register 0x000A
1) Read operation succeeds:
Command sent: 0x7E 0x00 0x07 0x01
0x00 0x0A
0x01
0xEE 0x8A
Message received: 0x02 0x00 0x00 0x01
0x3E
0xE4 0xAC
2) CRC check fails:
Command sent: 0x7E 0x00 0x07 0x01
0x00 0x0A
0x01
0x11 0x22
Message received: 0x02 0x00 0x01 0x01 0x00
0x04 0x01
3) Situations that may cause the engine to respond with an invalid command message: Command sent is
shorter than the required length, or the third byte is not sent out within 400ms after the first two bytes
“0x7e 0x00” are sent
Command sent: 0x7E 0x00 0x07 0x01
0x00 0x0A
0x01
Message received:0x02 0x00 0x03 0x01 0x00
0x6A 0x61
Summary of Contents for NLS-EM2000
Page 1: ...NLS EM2000 Embedded 2D Barcode Scan Engine User Guide...
Page 3: ...Revision History Version Description Date V1 0 0 Initial release April 10 2015...
Page 10: ......
Page 64: ...54 Good Read Beep Frequency Low Medium High Good Read Beep Duration 40ms 80ms 120ms...
Page 117: ...107 Mirror Images Decode Unmirrored DM Only Decode Mirrored DM Only Decode Both...
Page 119: ...109 Mirrored Micro QR Decode Mirrored Micro QR Do Not Decode Mirrored Micro QR...
Page 136: ...126 Appendix F Digit Barcodes 0 5 0 1 2 3 4 5...
Page 137: ...127 6 9 6 7 8 9...
Page 138: ...128 A F A B C D E F...