SPM33 Multifunctional power meter
8.2.4. Abnormal Responses ............................................................ 31
8.2.5. Broadcast Packets ................................................................ 32
8.3. Packet Communication .................................................................... 33
8.3.1 Read the Relay Output Status (Function Code 01H) ............. 33
8.3.2. Read Holding Registers (Function Code 03H) ...................... 35
8.3.3 Relay Control (Function Code 05H) ....................................... 36
8.3.4. Preset Multiple Registers (Function code 10H) ..................... 37
8.4. Calculating the CRC-16 Error Check Field ....................................... 38
8.5. Description of SPM33 Registers....................................................... 42
8.6 Description of Data Types ................................................................. 42
8.6.1 Real-time data register list ..................................................... 43
8.6.2 List of demand data registers ................................................. 52
8.6.3 List of harmonic data registers ............................................... 55
8.6.4 List of configuration registers ................................................. 58
8.6.5 Register for command and clear energy ................................ 64
8.6.6 List of device information registers ........................................ 65
9. Maintenance and Trouble Shooting .........................................................
10. Appendix 1 ............................................................................................... 69
66
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