COSEM Class 21 (Register Activation) for Dynamic Tariff Masking & CPP Rate Adjustments
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Grouping and Activating Energy Registers with Class 21
Class 21 (
Register Activation) dynamically maps raw measurement values into specific billing rate registers based on digital input signals or schedule triggers.Configuration Structure
register_assignment(Attribute 2): Array linking base measurement OBIS codes (e.g.1.0.1.8.0.255) to tariff registers (1.0.1.8.1.255,1.0.1.8.2.255,1.0.1.8.3.255).mask_list(Attribute 3): Defines active tariff masks for Rate 1 (T1), Rate 2 (T2), and Rate 3 (T3).active_mask(Attribute 4): Currently energized tariff mask.
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Register activation allows utilities to implement dynamic critical peak pricing (CPP) during extreme heatwaves by simply triggering Method 1 (
add_mask) via broadcast. -
When switching active masks, the meter registers the transition timestamp in the tariff audit log (
0.0.96.14.0.255) to ensure indisputable billing settlement.
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