Rt1310 Unit 4 Test Paper

Satisfactory Essays
The following validity checks shall be performed on messages from RATP: • Verify the integrity of the data by calculating a CRC (CRC1 for channel 1, CRC2 for channel 2) on the message and verify it matches the CRC in the message. • Verify the authenticity of the message by having a valid Type and the correct Train Address • Verify the message is not static by checking that Serial Number is updated and is within tolerance [CZL1_VATP_GA_SSRS-198] Otherwise, the message shall be rejected.
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