The reading parameters of the contact card single-phase prepayment watt-hour meter produced by Taian Chen Hui Electronics Factory are: F 1 F2 F3 F4 F5. What does this mean? Urgent need, thank you

"XXXX" refers to the last four digits of this electricity purchase.

"F2-X" indicates the previous position of the remaining power.

"XXXX" indicates the last four digits of the remaining power.

"F3-X" means the first place in the total electricity consumption.

"XXXX" refers to the last four digits of the total electricity consumption.

"F4-X" means the first place in the total purchased electricity.

"XXXX" refers to the last four digits of the total purchased electricity.

"F5-X" represents the number of odd power pulses.

"XXXX" refers to the last four digits of the odd number of pulses.

"0000" means that the power is used up.

"H-XX" indicates the first two digits of the table number.

"XXXX" refers to the last four digits of the form number.

"L-XX" means alarm power.

"J-XX" means alarm power failure.

"F-XX" means instrument constant.

"E-0 1" indicates an internal memory failure.

"E-02" indicates relay failure.

"E-03" indicates the sign of stealing electricity.

"E-04" indicates that the measurement is invalid.

"E-05" indicates that the IC card password is wrong.

"-"means measurement protection.

"OU- 1" means overload.

"OU-2" means overpressure.