Beckhoff BC3150 User Manual

Error handling and diagnosis
BC315088 Version: 2.1.0
7 Error handling and diagnosis
7.1 Diagnostics
PROFIBUS state
In many cases it is important to know whether the communication with the higher-level master is still OK. To
this end, link the DpState variable with your PLC program.
Fig.79: PROFIBUS diagnostic byte in the System Manager
Error number Description Remedy
0 No error -
129 Waiting for configuration data Start PROFIBUS
130 Waiting for parameter data Start PROFIBUS
131 No master available Check PROFIBUS cables and connectors
Example
If the PROFIBUS is interrupted, e.g. if the cable is pulled or the PLC is switched, the Bus Terminal Controller
indicates this by reporting 130 in DP state. That is, the Bus Terminal Controller is waiting for parameter data
from the master.
Slave boot sequence after a timeout or starting of the master:
parameter data - configuration data - data exchange
Reading fieldbus state by ADS
In default or TwinCAT configuration the fieldbus state can be read via ADSREAD.
Parameter ADSREAD function block Description
NetID local – empty string
Port 1
IndexGroup 16#0006
IndexOffset BX3100: 16#000C_A0F4
BC3150: 16#000C_A080
LEN 1
State of the K-bus
An internal bus or Bus Terminal error is indicated in the K-Bus state. A more precise fault description can be
obtained via a function block (in preparation). To this end, link the K-bus state variable with your PLC
program.

Beckhoff BC3150 Specifications

General

Brand	Beckhoff
Model	BC3150
Category	Controller
Language	English

Summary

Foreword and Documentation

Notes on Documentation

Information regarding documentation usage, audience, disclaimers, trademarks, and patents.

Safety Instructions and Precautions

Essential safety regulations, liability exclusion, personnel qualification, and symbol explanations.

Documentation Issue Status

Details on document version history, changes made, and firmware information.

Product Overview and Technical Data

BCxx50 Overview and Bus Terminal Principle

Introduction to BCxx50 controllers, their features, and the basic structure of the Bus Terminal system.

Technical Specifications

Detailed technical data for BCxx50, PROFIBUS-DP, and PLC functionalities.

The Beckhoff Bus Terminal System

Overview of the system, including modularity, mounting, and bus coupler types.

Mounting and Wiring Guide

Mounting Procedures

Guidance on mounting the Bus Terminal system components, including dimensions and installation.

Wiring and Connection Details

Instructions for wiring, covering potential groups, power supply, PROFIBUS, and ATEX conditions.

Parameterization and Commissioning

Start-up Behavior

Describes the sequence of operations and checks performed by the controller upon startup.

Configuration and Setup Procedures

Covers TwinCAT config, ADS, PROFIBUS, K-bus, PLC setup, and slave addressing.

Configuration Software and Programming Cable

Details on using KS2000 software and the programming cable for setup.

Programming Guide

PLC Features and TwinCAT Setup

BCxx50 PLC features, TwinCAT PLC introduction, and initial setup.

PLC Error Handling and Data Management

Managing TwinCAT PLC errors, remanent data, and allocated flags.

Process Image, Terminal Mapping, and Boot Projects

Configuring process image, mapping terminals, and creating boot projects.

Program Transfer, Communication, and PROFIBUS

Methods for program transfer, communication, libraries, and PROFIBUS setup.

PROFIBUS System Introduction

Fieldbus Overview and PROFIBUS DP

Overview of PROFIBUS as an open standard and details on PROFIBUS DP for data exchange.

PROFIBUS DPV1 and Connections

Explanation of PROFIBUS DPV1 for acyclic telegrams and details on connectors and cables.

PROFIBUS Topology and Addressing

Guidelines for PROFIBUS topology and procedures for setting slave addresses.

Error Handling and Diagnostics

Diagnostics and Status Monitoring

Methods for diagnosing PROFIBUS state, reading fieldbus status via ADS, and K-bus status.

Diagnostic LEDs and K-Bus Error Codes

Explanation of diagnostic LEDs and a table of K-Bus error codes with remedies.

Appendix and Support

Getting Started and Controller Migration

Initial setup guide for BC3150 and instructions for switching between controllers.

Firmware Update and Operating Conditions

Procedures for firmware updates and general operating conditions for fieldbus components.

Device Testing Standards and References

Test standards for devices and bibliography of relevant technical resources.

Abbreviations and Support

List of abbreviations and information on Beckhoff support and service contacts.