ABB A43 User Manual

Communication with Modbus
A43/A44 142 2CMC48001M0201
User Manual Revision: C
Bit
Contents
Description
number
3
Interval short
This bit is set if the interval was shorter
than the configured interval. This
happens if the date and time have been
adjusted forward in time.
4
Time change
This bit is set if an adjustment to the date
and time was made during the interval
5
Bad value
This bit is set if the value register
contains a doubtful value
6-7
Not used
Note – Bit 0 in the table above refers to the least significant bit in the register.
9.9.1 Reading Load profile
General
Readout of load profile is controlled by the Date/Time register. After writing to
the Date/Time register, the load profile entries are available in the registers of the
data block. To get the next set of entries the Get next entry register is used.
Read the 15 most
Follow the steps in the table below to read the 15 most recent load profile entries:
recent entries
Step
Action
1
Write a date and time in the future to the Date/Time registers, e.g. 2099-01-01
00:00:00.
2
Write the value 0 to the Direction register.
3
Read the data block.
Read forward or
backwards from
a specified date/
time
Follow the steps in the table below to read forward or backwards in time from a
specified date/time:
Step
Action
1
Write a date and time to the Date/Time registers.
2
Write to the Direction register. Writing value 0 means backwards and value 1
means forward.
3
Read data block.
4
Write the value 1 to the Get next entry register.
5
Repeat steps 3 and 4 until there are no more entries stored. When all entries
have been read, all registers in the data block are set to 0xFFFF.
Note – The Date/time registers are reset to 0xFFFF after a restart.

ABB A43 Specifications

General

Brand	ABB
Model	A43
Category	Measuring Instruments
Language	English

Summary

Product Overview

Installation

Mounting the Meter

Installing the Meter

Step-by-step guide for installing the meter, including cable connections and circuit protection.

Wiring Diagrams

Provides visual guides for various meter wiring configurations (direct and transformer connected).

Meter Settings

Settings and Configurations

Overview of all configurable functions available on the meter for customization.

Setting Alarm

Configuration of alarm thresholds, delays, and actions for event monitoring.

Setting Demand

Configuration of demand measurement parameters and channels.

Technical Data

Technical Specifications

Provides detailed technical specifications for meter models, including electrical and environmental data.

Service & Maintenance

Communication with Modbus

About the Modbus Protocol

Explains the Modbus protocol, request/response frames, and function codes.

Mapping Tables

Provides tables linking meter data quantities to Modbus registers.

Configuration

Communication with M-Bus

Protocol Description

Standard Readout of Meter Data

Troubleshooting

Error, warnings and information codes

Lists and describes error codes, warnings, and informational messages from the meter.