From Beginner to Proficient: Woodward easyYgen-3000 Controller Interface Configuration, CANopen, J1939 and Modbus Communication Practical Guide

Setpoint setting: supports remote setting of frequency, voltage, power factor, and active power

Alarm confirmation: supports remote confirmation of individual alarm information

Event history clearing: remotely clearing event records

Parameter reset: Restore factory settings through RS-232 or RS-485 interface

5.3 Logical Manager Configuration

The logic manager function can be configured through Modbus, including:

Start stop logic: Configure the conditions for remote request start stop

Confirmation logic: Configure the process of remote confirmation alarm

Operation mode: Configure automatic or stop mode

Detailed explanation of data protocol

6.1 Common Data Protocols

The controller supports multiple data protocols, such as:

Protocol 4103: Used for transmitting J1939 diagnostic fault codes and engine data

Protocol 5003: Includes real-time measurement values, alarm status, and switch status of generators and power grids

Protocol 5010: Block Reading for Modbus Visualization Data

6.2 Data Format

The CANopen data format follows the CiA standard and supports both unsigned and signed integers. The byte order of the data is low byte first.

Troubleshooting and Maintenance

7.1 Common Problems and Solutions

CAN bus no data: Check node ID, baud rate, PDO configuration, and operating mode

Modbus communication failure: Check slave ID, address offset, data length, and password settings

Expansion module cannot be configured: Check module connection status and LED indicator light

7.2 Exception Response Handling

The Modbus interface provides abnormal response codes to help users diagnose communication issues:

01 (Illegal Function): The request function code is not supported

02 (Illegal Address): Address inaccessible or data length incorrect

03 (Illegal Data Value): The data exceeds the range or the parameter does not exist