Notes
5 - instant flow rate unit m
3
/h, accumulated or totalized flow rate unit m
3
;
8 - instant flow rate unit SLPM, accumulated or totalized flow rate unit m
3
;
9 - instant flow rate unit SCFM, accumulated or totalized flow rate unit SCF.
The default value is 8.
e.g.:
W
hen the user reads “8” from register 0x00
90, the instant flow rate unit
is SLPM, accumulated or totalized flow rate unit is m
3
.
Notes: please disable the write protection before executing this function.
Change password
0x00AE ~ 0x00AF
Write
Y
Read
Y
Description
Change the default password
Value type
UINT 32
Notes
Password values = Value (0x00AE)*65536 + Value (0x00AF)
Available: 00000 ~ 99999
Notes: please disable the write protection before executing this function.
Offset calibration
0x00F0
Write
Y
Read
N
Description
Reset or calibrate the offset
Value type
UINT 16, Fixed value 0xAA55
Notes
To reset or calibrate the offset, write 0xAA55 to register 0x00F0.
When you execute this function, make sure there is NO flow in the flow
channel.
Notes: please disable the write protection before executing this function.
Reset accumulated
flow rate
0x00F2
Write
Y
Read
N
Description
Reset the accumulated or totalized flow rate value
Value type
UINT 16, Fixed value 0x0001
Notes
To reset the accumulated or totalized flow rate value, write 0x0001 to register
0x00F2.
Notes: please disable the write protection before executing this function.
Write protection
0x00FF
Write
Y
Read
N
Description
Write protection disabler for a set value to a specific register.
Value type
UINT 16, Fixed value 0xAA55
Notes
This function is enabled at the time of product shipment. To enable the write
function of a specific parameter, such as GCF, the user needs to send 0xAA55
to the register 0x00FF, and then the write function will be enabled (write
protection is disabled). After the write execution is completed, the firmware
will automatically re-enable the write protection.
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MF5000 User Manual
