Copyright © 2019 NEXCOM International Co., Ltd. All Rights Reserved.
54
NISE 505 User Manual
Appendix B: EC Command Documentation
2. Fan RPM
2.1 Command Register and Address Description:
Command
Description
0x80
Read
Address for RPM:
Address
Description
0x72-0x73
Fan1RPM (MSB: 0x72 LSB: 0x73)
0x74-0x75
Fan2RPM (MSB: 0x74 LSB: 0x75)
2.2 Read Fan RPM Description:
This command is to read fan RPM.
Sequence to read fan RPM:
Step
Action
Description
RW Sample Code
Command
0
Wait IBF clear
x
1
Write 0x80 to 0x66
Send read command >o 0x66 0x80
2
Wait IBF clear
x
3
Write RAM address
to 0x62 port
Send panel type
address 0x72 or
0x73.
>o 0x62 0x72
4
Wait OBF set
x
5
Read 0x62 port
Get Fan1 RPM data
in current address
>i 0x62