EKO MS-80 - SDI-12 Communication

EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80/80S/80U - Instruction Manual Ver. 1
Pg. 67
・ Linear post-correction sun photometer output V(LT) = k1 + (k2•V(T)) + (k3•V(T)
2
) + (k4•V(T)
3
)
・ The default value is k2=1, k1=k3=k4=0, so V(LT)=V(T), and the raw value is used for the corrected
insolation meter output.
A4-13. Solar irradiance after correction
・ After the linear correction and temperature correction written above, using the sensitivity value S(µV/W/m
2
)
for the output voltage, according to the following equation, calculate the irradiance value.
Corrected solar irradiance: I(C) = V(LT) x 1000/S
*Since the unit of V(LT) is millivolts, multiply it by 1000 to obtain the irradiance value.
A4-14. Outline of Coil / Discrete Input Registers
・ Reboot the device and save the settings by writing a specified bit.
・ Do not write to any Coil other than Reboot/Save.
・ The readout is always zero.
A4-15. Register details
Table A4-18. Coil register
Addr Parameter R/W Type
0 - - -
1 Reboot W Bit
2 - - -
3 Save W Bit
4 - - -
5 - - -
6 - - -
7 - - -