Satec PM130 User Manual

PM130
Powermeters
Reference Guide
Modbus
Communications
Protocol
BG0310 Rev. A1

Satec PM130 Specifications

General

Frequency Measurement Range	45 to 65 Hz
Power Supply	85-265V AC/DC, 100-300V DC
Display	LCD
Communication	RS485
Digital Inputs	2
Digital Outputs	2
Protocols	Modbus RTU
Accuracy	0.2% of reading
Power Accuracy	0.5%

Summary

Modbus Message Formats

Modbus Function 03: Read Multiple Registers

Modbus Function 04: Read Multiple Registers

Modbus Function 06: Write Single Register

Modbus Function 16: Write Multiple Registers

Protocol Implementation Details

Modbus Register Addressing

Explains the addressing scheme for PM130 Modbus registers.

Modbus Data Formats

Describes the three data formats used for communication with the PM130.

User Assignable Registers

Explains how to map instrument registers to user-defined assignable registers.

Powermeter Register Descriptions

Basic Data Registers

Lists and describes the basic data registers for powermeter readings.

Basic Setup Registers

Details the registers used for basic instrument setup and configuration.

User Selectable Options Setup

Describes registers for configuring user-selectable options and parameters.

Communications Setup Registers

Details registers for configuring communication parameters like interface and baud rate.

Instrument Status Registers

Extended Data Registers

Lists all registers containing measured data, including data identifiers.

Alarm and Event Setpoints