Testing and Measurement Tools 1. Handheld Devices Handheld devices are specially developed for testing PROFIBUS cables with RS 485 interfaces. For example, Siemens BT200 (recommended) and ComSoft Nettest II. Handheld devices can test the installation, as well as check the PROFIBUS cables and stations. To use the handheld device, it must be connected to the … Read more
1 Introduction With the rapid growth of decentralized structures in manufacturing automation and process automation, the application of field buses is becoming increasingly widespread. It facilitates data transmission between digital and analog input/output modules, intelligent signal devices, and process control devices with PLCs/PCs, dispersing I/O channels to field devices located nearby as required. This reduces … Read more
Profibus-DP Communication Protocol 1. Overview PROFIBUS – DP stands for Decentralized Periphery, which is a type of computer electronic component. It features high speed and low cost, used for communication between device-level control systems and decentralized I/O. It, along with PROFIBUS-PA (Process Automation) and PROFIBUS-FMS (Fieldbus Message Specification), forms the PROFIBUS standard. 2. Basic Information … Read more
Profibus PA (Process Automation Bus) is one of the most important field communication protocols in the process industry. It is designed for complex industrial environments and provides stable and efficient data transmission under harsh production conditions. This article will delve into the key features and application value of Profibus PA, helping readers gain a comprehensive … Read more
Steps for PROFIBUS DP Master-Slave Configuration: – Create a STEP 7 project – Insert the required SIMATIC S7-1200 station – Insert communication modules and other necessary modules in the station – Add the PROFIBUS DP network, assign DP addresses, define operation modes, and DP parameters DP Address Definition DP Master/Slave Mode Selection Maximum Address: Since … Read more
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Ethernet (Ethernet network) is a network that everyone is very familiar with. It was created by Xerox and jointly developed by Xerox, Intel, and DEC as a baseband local area network specification. It is the most widely used communication protocol standard for existing local area networks today, including standard Ethernet (10Mbit/s), Fast Ethernet (100Mbit/s), and … Read more
S7-1200 acts as a DP Master during communication. When a DP slave is lost, the CPU does not stop, nor is it necessary to download an organization block to the CPU. For fault diagnosis of PROFIBUS DP, there are several methods: 1. Through the Indicator Lights on the Module The DIAG light on the front … Read more
PROFIBUS Transmission Technology (Physical Layer) and DP Communication In the ISO/OSI reference model, the first layer defines the “physical” methods of data transmission. This includes encoding types and the transmission standards used (e.g., RS 485). PROFIBUS provides various transmission technologies for the first layer: RS 485, RS 485-IS, MBP, and fiber optic transmission technology. Traditional … Read more
As one of the many members of the fieldbus family, ProfiBus is the most widely used fieldbus standard in the European industrial sector and is also one of the internationally accepted fieldbus standards. ProfiBus is a SIMITAC network belonging to the unit-level and field-level, suitable for transmitting small to medium amounts of data. Its openness … Read more