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SPM33
Pilot Communications SPM33 User Manual
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Table of Contents
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3
Table of Contents
3
1 General Information
6
2 Order Information
7
3 Dimension and Installation
8
Dimension
8
Installation
8
4 Operation
9
Real-Time Measurement Data Structure
9
The Graphic Display
10
Status Inquiry
11
Key Description
11
Parameter Settings
12
5 Measuring Capability
18
Real-Time Basic Electrical Parameters
18
Voltage
19
Current
19
Frequency
20
Demand Parameters
20
Energy Parameters
22
Harmonic Parameters
22
Unbalance Parameters
23
Alarm Setpoint
23
Alarm Action Condition
25
Alarm Output
26
6 Input/Output Characteristics
26
Relay Output
26
Status Input
28
Dual Source Kwh Measurement
29
7 Technical Datasheet
30
8 Communication Protocol
32
Introduction
32
Detailed Description of the SPM33 Modbus Protocol
33
SPM33 Modbus Protocol Rules
33
Modes of Transmission
34
Description of the Modbus Packet Structure
34
Abnormal Responses
36
Broadcast Packets
37
Packet Communication
38
Read the Relay Output Status (Function Code 01H)
38
Read Holding Registers (Function Code 03H)
40
Relay Control (Function Code 05H)
41
Preset Multiple Registers (Function Code 10H)
42
Calculating the CRC-16 Error Check Field
43
Description of SPM33 Registers
47
Description of Data Types
47
Real-Time Data Register List
48
List of Demand Data Registers
57
List of Harmonic Data Registers
60
List of Configuration Registers
63
Register for Command and Clear Energy
69
List of Device Information Registers
70
9 Maintenance and Trouble Shooting
71
10 Appendix 1
74
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Pilot Communications SPM33 Specifications
General
Brand
Pilot Communications
Model
SPM33
Category
Measuring Instruments
Language
English
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