Kontron S5500 SEL Troubleshooting - Manual (Page 45)

Cooling subsystem System Event Log Troubleshooting Guide for Intel® S5500/S3420 series Server Boards
36 Intel order number G74211-001 Revision 1.0
5.2.1 Regular Temperature sensors
Regular temperature sensors are sensors that report an actual temperature. These are linear, threshold based sensors. In most Intel ® server
systems, there are at least two sensors defined: front panel temperature and baseboard temperature. Both these sensors typically have upper
and lower thresholds set
– upper to warn in case of an over-temperature situation, lower to warn against sensor failure (temperature sensors
typically read out 0 if they stop working).
Table 33: Temperature Sensors Typical Characteristics
Byte Field Description
11 Sensor Type 01h = Temperature
12 Sensor Number See Table 35
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 Trigger Offset as described in Table 34
15 Event Data 2 Reading that triggered event.
16 Event Data 3 Threshold value that triggered event.
Table 34: Temperature Sensors Event Triggers – Description
Event Trigger Assertion
Severity
Deassert
Severity
Description
Hex Description
00h
Lower non critical
going low
Degraded OK The temperature has dropped below its lower non critical threshold.
02h
Lower critical
going low
non-fatal Degraded The temperature has dropped below its lower critical threshold.
07h
Upper non critical
going high
Degraded OK The temperature has gone over its upper non critical threshold.