Beckhoff BAC-TS-011 Modbus Watchdog Configuration Guide

About this manual

This document provides instructions for configuring the Modbus Watchdog function on Beckhoff controllers that support Modbus RTU/TCP communication. By default, this watchdog feature is enabled. Users can disable it by setting a specific holding register to zero via the Modscan software.

The guide details the steps to connect to the controller using Modscan and modify the value of Holding Register 44385. Setting this register to 0 disables the Watchdog function, while the default value is 1000 (ms). The document also notes that the Modscan software must be downloaded separately from its official website. This manual is written in Chinese.

What's inside

• Overview
• Modbus Watchdog Function
• Disabling Watchdog
• Using Modscan Software
• Holding Register 44385
• Contact Information
• Reference Links

Frequently asked questions

Is the Modbus Watchdog function enabled by default?

Yes, Beckhoff controllers with Modbus RTU/TCP communication functions have this feature enabled by default.

What is the default value of register 44385?

The default value for Holding Register 44385 is 1000 (ms).