Pilot Communications SPM33 - Page 4

SPM33 Multifunctional power meter
5.2 Demand Parameters ......................................................................... 1
5.3 Energy parameters ............................................................................17
5.4 Harmonic parameters ........................................................................ 17
5.5 Unbalance parameters ...................................................................... 18
5.6 Alarm Setpoint ................................................................................... 18
5.6.1 Alarm action condition ............................................................ 20
5.6.2 Alarm Output .......................................................................... 21
6. Input/output Characteristics ....................................................................
6.1 Relay output ...................................................................................... 21
6.2 Status input ....................................................................................... 23
6.3 Dual Source kWh measurement ....................................................... 24
7. Technical Datasheet ..................................................................................
8. Communication protocol ..........................................................................
8.1. Introduction ...................................................................................... 27
8.2. Detailed Description of the SPM33 Modbus Protocol ....................... 28
8.2.1. SPM33 Modbus Protocol Rules ............................................ 28
8.2.2. Modes of Transmission ......................................................... 29
8.2.3. Description of the Modbus Packet Structure ......................... 29
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