Analysis of data algorithm for-M1 card of a water meter

# Analysis of-M1 card data algorithm for a water meter

# # Card Data
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Sector Data | Amount
:--- |:---
13EC 0000 0000 0000 0000 0000 03EB BD1B | 51.00
13E7 0000 0000 0000 0000 0000 03f0 AD2B | 50.95
13E2 0000 0000 0000 0000 0000 03f5 AD2B | 50.85
13DD 0000 0000 0000 0000 0000 03FA 9D3B | 50.80
13d8 0000 0000 0000 0000 0000 03FF 9D3B | 50.75
13d3 0000 0000 0000 0000 0000 0404 6a6e | 50.70
13CE 0000 0000 0000 0000 0000 0409 7a5e | 50.65
13c9 0000 0000 0000 0000 0000 040E 7a5e | 50.60

# # Algorithm Analysis
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1-2 Amount
13-14 Amount of Backup
15-16 unknown, may be terminal number

1-2 Amount and 13-14 amount of backup operation relationship
0X17D7-0X17EC = 0x03eb
Backup amount = 0x17d7-balance

# # Algorithm Reference

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Analysis of data algorithm for-M1 card of a water meter