DATA STORAGE SYSTEM FOR FIELD EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide a data storage system for field equipment capable of reducing a possibility of alteration or erasure of recorded data from the outside.

SOLUTION: This data storage system for field equipment includes: a first CPU importing data from the outside of the storage system to the inside of the storage system; a second CPU reading the data from the first CPU, and a memory recording only the data read from the first CPU by the second CPU. The first CPU and the second CPU are different ones, and the second CPU is prevented from controlling the operation of rewriting the data already recorded in the memory and from controlling the operation of erasing the data already recorded in the memory. Only the data that the second CPU read out from the first CPU is cumulatively recorded and the data recorded in the memory is prevented from being rewritten or erased till the readout of the data from the memory.

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