HP Moonshot 1500 Chassis User Manual Page 8

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Table 1 Sensor owner ID and sensor number field definition (continued)
System Sensor Owner IDIPMB Sensor Owner ID
0 1b (ID is a software ID)0 0b (ID is a slave address)
sensor number (8 bits, FFh = reserved)LUN (2 bits)
sensor number (1 bit, FFh = reserved)
This only appears in the system node SEL, where the it is
logged by the host system
In Moonshot: 0x82 IPMB address
Sensor type code
Each sensor has a sensor type code and are defined in “Some Moonshot sensor type codes
(page 8). Sensor type codes are used both in SDRs and event messages. An example of a sensor
type code is code 0x1, which indicates a temperature sensor.
Table 2 Some Moonshot sensor type codes
Reading type codeSensor type codeSensor type
0x10x1Temperature
0xA0x4Fan
0xB0x4Fan redundancy
0x6F0xF1PICMG IPMB0 Physical Link
0x710xC0Health LED
0x700xC0UID LED
0x6F0x8Power supply
0xB0x8Power supply redundancy
For a complete listing of sensor type codes, see the IPMI specification available at:
http://www.intel.com/content/www/us/en/servers/ipmi/second-gen-interface-spec-v2.html
System event log and event messages
The MC provides a centralized, non-volatile SEL. Having the SEL and logging functions managed
by the MC helps ensure that post-mortem logging information is available should a failure occur
that disables the systems processor(s).
A set of IPMI commands allows the SEL to be read and cleared, and for events to be added to the
SEL. The common request message used for adding events to the SEL is an event message. Event
messages are sent to the MC via the IPMB providing the mechanism for satellite controllers to detect
events and log them into the SEL. The controller that generates an event message to another
controller via IPMB is the IPMB Event Generator. The controller receiving event messages is the
IPMB Event Receiver.
In Moonshot, event messages are sent to the zone manager by each cartridge and chassis controller.
There are two event logs, the SEL and the IML. There are OEM specific commands for obtaining
and displaying these logs. For more information, see the related commands in “Command
specification” (page 25).
8 Introduction and key concepts
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