ADLINK PXES-2590 - Manual (Page 65)

Monitoring/Control Functions 55
PXES-2590
*Write Fan Speed Mode (command 0xC4)
Writes Fan Speed Mode.
Use the SMB write word to write this word data
Data format is as follows:
SMB Dir Offset Value Description
Write word > 0 SA Slave address
> 1 0xBE Command code
> 2 0-255 Low byte data
> 3 0-255 High byte data
Bit Description
15..0 Write Fan Speed Mode
0: Auto
1: Full Speed
2: Low Speed