JUMO DICON 400, Interface Description, Page: 13 / 44

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2 Protocol description
2.7 Checksum (CRC16)
The checksum (CRC16) serves to recognize transmission errors. If an
error is identified during processing, the appropriate instrument will not
respond.
Calculation
method
Example Data request: read two words, starting at address 0x1053
(CRC16 = 0x30BC)
Response: (CRC16 = 0xADF5)
CRC = 0xFFFF
CRC = CRC XOR ByteOfMessage
For (1 to 8)
CRC = SHR(CRC)
if (flag shifted right = 1)
then else
CRC = CRC XOR
0xA001
while (not all ByteOfMessage processed);
07 03 10 53 00 02 30 BC
CRC16
07 03 04 00 00 41 C8 AD F5
Word 1 Word 2 CRC16