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PROFIBUS Basics

PROFIBUS Network Overview

•PROFIBUS is an open, vendor independent FieldBus standard for a wide range of applications in industrial automation, including motion control.

•PROFIBUS is a dynamic technology that grows functionally while complying with the European FieldBus Standard EN 50 170.

•PROFIBUS Guidelines and Profiles provide the means for further technical development based on the ever-changing communication requirements of the networks, systems, and devices used in today's industrial automation applications.

PROFIBUS specifications reference three different protocols to cover a range of industrial requirements:

•PROFIBUS-DPHigh speed data communication. DP stands for Decentralized Periphery. In practice, the majority of slave applications are DP applications.

•PROFIBUS-FMSObject oriented general-purpose data communication. FMS stands for FieldBus Message Specification. FMS protocol devices may exchange data on the same bus used for DP devices.

•PROFIBUS-PAMeets requirements for intrinsic safety and non-intrinsic safety areas and includes bus powered field devices.

Note: The PROFIBUS logo is a registered trademark of the PROFIBUS International Organization. Membership in the organization is open to all individuals, companies and organizations. More information about the organization and the protocol is available at http://www.profibus.com

Bus Communication

The PROFIBUS specification defines the technical characteristics of a serial field bus system that links distributed digital controllers on the network, from field level to cell level. PROFIBUS is a multi-master system that allows the joint operation of several automation, engineering or visualization systems with their distributed peripherals on one bus. PROFIBUS distinguishes between the following types of devices:

•Master devices determine the data communication on the bus. A master can send messages without an external request when it holds the bus access rights (the token). Masters are also called active stations.

•Slave devices include motion controllers, drives, I/O devices, valves, and transducers. Slaves do not have bus access rights and can only acknowledge received messages or send messages to the master when requested to do so. Slave devices are passive stations and require only small portions of the bus protocol.

The majority of PROFIBUS-DP applications are located at the field level. The field level typically includes slave devices such as the S2K motion controller station and host devices like PLC or PC control systems for the PROFIBUS-DP master station. Operator interfaces and DCS type systems usually operate at the cell level.

GFK-2121A

Chapter 1 Overview and Specifications

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GE GFK-2193A user manual Profibus Basics, Profibus Network Overview, Bus Communication
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GFK-2193A specifications

The GE GFK-2193A is a versatile and powerful programmable logic controller (PLC) designed for industrial automation applications. With its robust construction and advanced features, the GFK-2193A is ideal for industries that demand high reliability and flexibility in their control systems.

One of the standout features of the GE GFK-2193A is its processing power. It is equipped with a high-speed CPU that can handle complex tasks and large volumes of data efficiently. This allows for real-time decision-making and control, making it suitable for critical applications where timing and accuracy are paramount. The processing speed is complemented by a multitasking capability, enabling the controller to manage multiple processes simultaneously without a drop in performance.

The GFK-2193A also boasts an extensive range of input and output options. It supports a variety of digital and analog I/O modules, allowing for seamless integration with different sensors, actuators, and devices. This flexibility makes it easy to customize the system according to specific operational needs, whether it's for small-scale automation or extensive industrial setups.

In terms of communication capabilities, the GE GFK-2193A includes support for multiple industrial communication protocols. This includes Ethernet, Modbus, and Profibus, among others, ensuring compatibility with a wide array of devices and systems. The controller's ability to communicate effectively helps facilitate data exchange, enabling better coordination and monitoring across different components of an automation system.

Another significant feature of the GE GFK-2193A is its programming environment. It utilizes the popular Ladder Logic programming language, which is widely regarded for its ease of use and efficiency. Additionally, the controller supports other programming languages, like Function Block Diagram and Structured Text, providing users with the flexibility to choose the most suitable method for their application.

The durability of the GFK-2193A is another remarkable characteristic. Designed to withstand harsh industrial environments, it features robust housing and components, making it resistant to dust, moisture, and temperature fluctuations. This ensures long-lasting performance with minimal maintenance needs, enhancing overall operational efficiency.

In summary, the GE GFK-2193A is a comprehensive solution for industrial automation that combines processing power, flexibility in I/O configurations, advanced communication capabilities, and a user-friendly programming environment. Its robust construction ensures reliability even in challenging conditions, making it a trusted choice for industries looking to enhance their automation processes.
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