ADLINK PXES-2590 - Manual (Page 62)

52 Monitoring/Control Functions
Data format is as follows:
*Write 5Vsb Alarm Threshold (command 0xBA)
Writes the 5Vsb Alarm Threshold.
Use the SMB write word to write this word data
Data format is as follows:
*Write Fan Speed Alarm Threshold (command 0xBC)
Writes the Fan Speed Alarm Threshold.
Bit Description
7..0 -12V Under Voltage Alarm Threshold. Unsigned 8-bit
data, the LSB is 0.1%. If the -12V voltage is lower than
this threshold, the MCU triggers a voltage alarm. The
threshold range is between 0 and 250
15..8 -12V Over Voltage Alarm Threshold. Unsigned 8-bit data,
the LSB is 0.1%. If the -12V voltage is higher than this
threshold, the MCU triggers a voltage alarm. The
threshold range is between 0 and 250
SMB Dir Offset Value Description
Write word > 0 SA Slave address
> 1 0xBA Command code
> 2 0-255 Low byte data
> 3 0-255 High byte data
Bit Description
7..0 5Vsb Under Voltage Alarm Threshold. Unsigned 8-bit
data, the LSB is 0.1%. If the 5V standby voltage is
lower than this threshold, the MCU triggers a voltage
alarm. The threshold range is between 0 and 250
15..8 5Vsb Over Voltage Alarm Threshold. Unsigned 8-bit
data, the LSB is 0.1%. If the 5V standby voltage is
higher than this threshold, the MCU triggers a voltage
alarm. The threshold range is between 0 and 250