Lika AMM5A / BG1 Series, User Manual

Page: 47 / 56

AMM5A & AMM5B • SSI, BiSS, & RS-485
1 ADF of
request
00h Writing is being executed
Request for writing is
invalid
When
MEM BUSY
status of transmission data from the encoder is logical value
“1” = Writing is being executed, the writing process based upon the request is
not executed.
For checking out that the process of writing data into EEPROM has been carried
out properly, the check is to be conducted by transmitting [Request for reading
(Data ID D)].
EEPROM data field: 8-bit data
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
MS bit ... LS bit
7.6 CRC Field
Generation algorithm in accordance with G(X) = X
8
+ 1
Data is configured in accordance with LSB first.
Calculation is executed to all 8 bits except for Start bit and Delimiter of fields
rather than CRC.
EXAMPLE
Master Encoder
→
CF
02h
Encoder Master
→
CF SF DF0 DF1 DF2 DF3 CRC
32h 10h 01h 28h B0h 08h B3h
Example of code
UCHAR MakeCRC(char *BitString)
{
CRC8 = 0;
char CRC[8];
UINT i;
char DoInvert;
MAN AMM5A_B SSI_BiSS_RS485 E 1.9.odt 7 – RS-485 serial interface 47 of 56