IC695CRU320-EJ Redundant CPU Power Supply – GE


The CRU320 does not support synchronization with RX7i redundancy units

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IC695CRU320-EZ Adds support for the Remote Get HART Device Information COMMREQ. This allows the user application to retrieve information from a HART device connected to an RX3i Analog module via an IC695PNS001 RX3i PROFINET Scanner (PNS).

IC695CRU320-EY Several security enhancements were made to various PACSystems Controllers to harden the product against an attacker with local area network access.

IC695CRU320-EX Supports extended PROFINET device Subslot Numbers in order to support additional 3 rd party devices. The maximum Subslot Number for PROFINET devices has been increased from 255 to 21845.

IC695CRU320-EW Add support for HART® Pass Through feature. Refer to PACSystems RX3i HART Pass Through User Manual, GFK-2929.

IC695CRU320-EV The CRU320 now supports 255 PROFINET I/O Devices in a PACSystems RX3i Hot Standby CPU Redundancy system. PROFINET operation uses the PROFINET I/O Controller module IC695PNC001. Redundant operation conforms to PROFINET V2.3 Type S-2 System Redundancy. PROFINET I/O operation in a HSB CPU Redundancy system is described in the following user manuals: · PACSystems Hot Standby CPU Redundancy User’s Manual, GFK-2308K · PACSystems RX3i PROFINET IO Controller User Manual, GFK-2571D.

When the CPU is first powered on, the RS-485 port (COM 2) powers up with the transmitter enabled. The transmitter is placed into a high-impedance state once the CPU OK LED is illuminated. Since that takes a finite amount of time, this could be an issue if the COM 2 port is being used in multi-drop communications, and other devices share the same cable via wiredOR connections. If one of those devices is actively communicating when the CPU is powered up, there is a potential for those communications to be disrupted until the CPU puts the RS-485 port into high-impedance state.

PLC and DCS, as important control facilities in the field of automatic control, are increasingly widely used in various production control sites. In the manufacturing industry, which is a large-scale production system, they have become indispensable control tools. Regarding the application of PLC and DCS systems, we often have the question: What are the differences and connections between PLC and DCS? What aspects do we need to pay special attention to when using? What are the bottlenecks that currently constrain its technological development?

Firstly, in order to do a good job, one must first sharpen their tools. We must have a clear definition of the difference between PLC and DCS, even though they are both control tools, their actual functions are vastly different. The so-called Distributed Control System (DCS) is a control system that integrates computer technology, control technology, communication technology, and CRT technology. It mainly monitors, controls, operates, and manages the production process. And PLC is called programmable logic controller. The similarity between DCS and PLC is the basic configuration of software configuration, but DCS is more powerful. For example, database generation, historical data generation, graphic generation, report generation, and control configuration. The objects controlled by PLC are generally relatively simple, while DCS can control all equipment of the enterprise and become a central hub. On the battlefield of production control, they are both generals and handsome talents, and there is no one who controls each other. PLC can provide signals to DCS, and in turn, DCS can also provide signals to PLC. The two cooperate with each other, and their master-slave relationship mainly depends on the requirements of the equipment.

The rapid development of PLC has brought various technological challenges. When it comes to how to break through the bottleneck of PLC development at the current stage, we should broaden our horizons and think about how to achieve a national level, universal, common, and comprehensive PLC platform. A PLC universal platform, whether as an information technology product, control technology product, or a backbone product of the integration of the two, should be given special attention. The platform includes three parts of R&D/design, manufacturing and application, and gives the specific product objective requirements (system hardware and software) and functional requirements (general technical indicators of hardware and software, progressiveness and reliability indicators of performance) of the general PLC platform.

Looking back at the development path of DCS, it is important to divide each technical stage based on the increase in the number of microprocessors. Some even suggest that if the microprocessor is updated and replaced once, DCS technology will be upgraded. DCS is a highly integrated product of computer technology, control technology, and network technology. DCS usually uses several controllers (process stations) to control numerous control points in a production process, and each controller is connected through a network and can exchange data. Using a computer operation station, connected to the controller through a network, to collect production data and convey operational instructions. Therefore, DCS technology will inevitably be constantly updated and updated with the technology of microprocessors to meet the needs of new systems.