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Byte
1
2
2.19 Set Fan Speed
This is the command to set fan pwm duty cycle. User needs to use command 0x0b to disable cooling manager support first so that
the fan will not be controlled by thermal algorithm anymore.
Linux command:
$ ipmitool raw 0x3c 0x14
Description:
NetFn
Command
Request Data:
Byte
1
2
Response Data:
Byte
1
2
Data field
Completion Code
Mask
[7] – PSU Error Mask
[6] – Undetermined Error Mask
[5] – CPU Fault Mask
[4] – Overtemp Mask
[3] – Hightemp Mask
[2] – DIMM Error Mask
[1] – FAN Error Mask
[0] – Sensor Error Mask
0x3c
0x14
Data field
Fan number
2 - 6: 2U Chassis
2 - 7: 1U Chassis
Pwm Duty (0-100)
Data field
Completion Code
Result
00h: Success
01h: Invalid fan number
154
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