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AmsData stores power as uint32_t, but IEC6205621 cast 1.7.0/2.7.0/3.7.0/4.7.0 through uint16_t, so anything above 65 535 W wrapped. A P1 telegram with 1.7.0(70.123*kW) decoded as 4587 W; it now decodes as 70123 W. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01LAhKXXvV3q3Ro13EackZPq
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IEC6205621cast 1.7.0, 2.7.0, 3.7.0 and 4.7.0 throughuint16_tbefore storing them in theuint32_tfields ofAmsData, so any P1 power above 65 535 W wrapped. The cast is nowuint32_t.Test: P1 telegram based on
kamstrup/gh578-1with1-0:1.7.0(70.123*kW)and recalculated CRC: 70 123 W (was 4 587 W). Golden master unchanged.🤖 Generated with Claude Code
https://claude.ai/code/session_01LAhKXXvV3q3Ro13EackZPq