Author: MobMsg, a Senior Full-Stack Engineer and Partner at the Architect Community! TCP/IP Protocol Family The core protocol of the Internet is TCP/IP, widely used in local area networks and wide area networks, with a development history of over 20 years, and is the current international standard. TCP/IP is a protocol family that includes various … Read more
Click the “Five-Minute Algorithm Learning” above and select the “Star” public account Heavyweight content delivered first time When it comes to the protocols we encounter most in computer networks, we cannot ignore the TCP/IP protocol, which is also the most famous protocol on the Internet. Let’s talk about the TCP/IP protocol together. Historical Background of … Read more
What Are TCP Segmentation and IP Fragmentation We know that a network is like a pipe, and pipes can have different diameters. When a data packet wants to travel from one end of the pipe to the other, it must pass through this pipe. (Obvious, right?) However, the size of data packets can be varied, … Read more
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
Follow our public account to not miss any messages! 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 if you wish to reproduce it. 1Introduction The previous article provided a … Read more
CANopen is a high-level protocol based on the CAN (Controller Area Network) serial bus system and CAL (CAN Application Layer). CANopen assumes that connected devices have hardware with a CAN transceiver and a CAN controller that comply with the ISO 11898 standard. The CANopen communication protocol CiA DS-301 includes periodic and event-driven communication, which not … Read more
1.Device Control This section mainly describes how the master controls the driver through the CANopen bus, such as turning the servo ON or clearing alarms. (1)Control State Machine The master controls the driver through the control word, and by reading the driver’s status word, it can know the current state of the driver. This section … Read more
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 the important role of CAN … Read more
From the OSI network model perspective, fieldbus networks generally implement only the 1 layer (Physical Layer), the 2 layer (Data Link Layer), and the 7 layer (Application Layer). Because fieldbus typically includes only one network segment, it does not require the 3 layer (Transport Layer) and the 4 layer (Network Layer), nor does it need … Read more
1、CANopenPredefined Connection Set To reduce the configuration workload of simple networks, CANopen defines a mandatory default identifier (CAN-ID) allocation table. These identifiers are available in the pre-operational state and can be modified through dynamic allocation. CANopen devices must provide the corresponding identifiers for the communication objects they support. The defaultID allocation table is based on … Read more