business communication

Common Issues and Solutions for LabVIEW and CANopen

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Common Issues and Solutions for LabVIEW and CANopen

Click the blue text above, follow our public account, and share a LabVIEW case every day 1. Firmware Version Mismatch Error Message: “Firmware image version is incompatible with C Series modules. Solution: Update the firmware by following the instructions in Firmware_Update_Instructions.html, accessible from the National Instruments\NI-IndCom for CANopen directory.” Resolution Steps: Check the NI-Industrial Communications … Read more

An Overview of CANopen SDO

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An Overview of CANopen SDO

SDO is primarily used for reading and writing parameters of slave devices by the CANopen master. The most significant feature of SDO is the service confirmation, which produces a response for each message, ensuring the accuracy of data transmission. SDO communication is based on the client-server model, with the CANopen master node typically acting as … Read more

Easy Introduction to CANopen Part Five

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Easy Introduction to CANopen Part Five

1、Process Data ObjectPDO（Process Data Object) As mentioned earlier PDO belongs to process data used to transmit real-time data, that is, one-way transmission without the need for a response from the receiving nodeCAN message to confirm, from a communication terminology perspective, it belongs to the “producer-consumer” model PDO, as shown in the figure, it is like … Read more

Important Considerations for Implementing CANopen Bus

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Important Considerations for Implementing CANopen Bus

CANopen is a high-level protocol based on CAN, which is widely used in various automation control systems. CANopen networks use twisted pair cables to transmit differential signals, but factors such as poor electromagnetic environment, non-standard wiring, and unreliable grounding in domestic industrial sites can directly affect communication quality and interfere with bus operation. To ensure … Read more

Understanding CAN and CANopen Protocols

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Understanding CAN and CANopen Protocols

CAN (Controller Area Network) and CANopen are communication protocols commonly used in the automotive and industrial automation fields, facilitating communication between various devices and components within a system. CAN is a serial communication standard that operates at the first two layers of the OSI model, namely the physical layer and the data link layer (functioning … Read more

Understanding CAN Bus Protocol – CANOpen Series Tutorial 02

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Understanding CAN Bus Protocol - CANOpen Series Tutorial 02

Follow Our Public Account to Not Miss Any Updates!! This tutorial was originally published by the author strongerHuang in September 2018. Tags: CAN, CANOpen, CanFestival Copyright: Commercial Use Prohibited Disclaimer:This document is for personal learning use only. Please contact the author for authorization before reprinting. 1Introduction The previous article discussed CAN and CANOpen, and I … Read more

Classic PLC Modbus Communication Case Study

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Classic PLC Modbus Communication Case Study

1. Hardware Setup The Modbus communication in the program is conducted between the 0 communication ports of two S7-200 CPUs (it is best for each CPU to have two communication ports). On the master side, communication can also be established using the corresponding library files “MBUS_CTRL_P1” and “MBUS_MSG_P1” through the 1st communication port. Communication port … Read more

Understanding the Modbus Communication Protocol

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Understanding the Modbus Communication Protocol

Source | Guoguo Little Master Modbus is considered a classic communication protocol in the embedded field. Whether you are a beginner or an engineer with years of experience, it is essential to understand it. 1. What is Modbus? As the name suggests, it is a bus protocol. For example, serial protocols, IIC protocols, and SPI … Read more

MODBUS Weight Instrument Communication with Siemens PLC

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MODBUS Weight Instrument Communication with Siemens PLC

1 A weight instrument supporting the Modbus protocol A weight instrument supporting the Modbus protocol 2 Set the communication parameters of the instrument You can adjust according to your requirements, as long as it is consistent with the PLC side. Baud rate: 9600 Data format: 8n1: 8 data bits / no parity bit Communication method: … Read more

ABB Robot Modbus/TCP Communication

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ABB Robot Modbus/TCP Communication

For more content, please click above to follow ABB Robot Practical Skills You can also click on the public account below Classic Articles to browse more content For reprints, please leave a message in the background first, let’s support original content together and promote the use and development of robots This public account provides technical … Read more