Kontron S5500 SEL Troubleshooting - Manual (Page 28)

System Event Log Troubleshooting Guide for Intel ® S5500/S3420 series Server Boards Power Subsystems
Revision 1.0 Intel order number G74211-001 19
4. Power Subsystems
The BMC monitors the power subsystem including power supplies, select onboard voltages, and related sensors.
4.1 Voltage Sensors
The BMC monitors the main voltage sources in the system, including the baseboard, memory, and processors, using IPMI compliant
analog/threshold sensors.
Note: A voltage error could be caused by the device supplying the voltage or by the device using the voltage. For each sensor it will be noted
who is supplying the voltage and who is using it.
Table 12: Voltage Sensors Typical Characteristics
Byte Field Description
11 Sensor Type 02h = Voltage
12 Sensor Number See Table 14
13
Event Direction and
Event Type
[7] Event direction
0b = Assertion Event
1b = Deassertion Event
[6:0] Event Type = 01h (Threshold)
14 Event Data 1
[7:6] – 01b = Trigger reading in Event Data 2
[5:4] – 01b = Trigger threshold in Event Data 3
[3:0] – Event Triggers as described in Table 13
15 Event Data 2 Reading that triggered event
16 Event Data 3 Threshold value that triggered event
The following table describes the severity of each of the event triggers for both assertion and for deassertion.