Description
Overview
Essential details:PM891K02 3BSE053242R1 Redundant Processor Unit ABB
Products Description
The PM891 processor is a monolithic unit equipped with power supply, CPU-boards and unit termination. The unit contains microprocessor and RAM memory, a real-time clock, LED indicators, INIT push button and a Secure Digital interface. The PM891 does not contain any internal battery The PM891 has two RJ45 Ethernet ports (CN1, CN2) for connection to the Control Network, and one RJ45 serial port (COM4). The COM4 port is isolated and used for a configuration tool. The PM891 supports CPU redundancy for higher availability (CPU, CEX-Bus, communication interfaces and S800 I/O).
The communication expansion bus (CEX-Bus) is mounted on the unit. The CEX-Bus is used for extending the on-board communication ports with communication interface units. It is possible to use redundant communication interfaces on the CEX-Bus. The CEX-Bus Interconnection unit BC810 is used to increase the availability on the CEX-Bus by dividing it into separate segments. The optical Modulebus of the unit can be used for connecting seven clusters of S800 I/O units (each comprising up to 12 units). Each PM891 is provided with a unique Ethernet address which provides hardware identity to the unit.
Package including:
2 pcs PM891K01 Processor Unit
1 pcs TK850V007 CEX-bus Extension Cable
1 pcs TK855 RCU Data Link Cable
1 pcs TK856 RCU Control Link Cable
Please note: The BC810K02 is not included in the PM891K02 Redundant Processor Unit kit. In order to make hot replacement of PM891 Processor Unit possible, the BC810K02 is required and has to be ordered separately.
Features and benefits
- Reliability and simple fault diagnosis procedures
- Modularity, allowing for step-by-step expansion
- IP20 Class protection without the requirement for enclosures
- The controller has full EMC certification
- High performance and large application memory
- Sectioned CEX-Bus using a pair of BC810
- Built-in redundant Ethernet Communication ports
Remote input devices enable users who are far away from the computer to perform batch input jobs on distant computers. The simplest structure of the device consists of a printer, a card reader and its communication-control processor. Since the information in the communication line is transmitted in serial mode, the communication control processor in the equipment needs to convert the information input to the computer from parallel to serial and send it to the communication line, and then output the information sent from the communication line from serial to parallel. In addition, information transmission and error correction should be monitored according to the specified communication procedures.
In order to realize the long control distance and high precision, the accuracy of remote equipment information must be improved. Because of the communication problems between multiple systems, sometimes the remote instruction information is typed manually. In the case of large data volume, the error rate of information typing increases. In order to improve the accuracy of input remote device information, an ARM-based automatic input conversion system for remote device information is developed. The remote device information is transmitted to the system through RS485 protocol. The system analyzes the information protocol and data, and forwards the obtained keyboard and mouse data to the control system through PS2 keyboard protocol and serial mouse protocol. In practice, the remote equipment information automatic input conversion system improves the accuracy of information input and the efficiency of control automation.
System working principle
The system receives keyboard and mouse commands in real time and forwards them to the computer host to realize normal keyboard and mouse information input. Under the control of the external device, the keyboard and mouse information transmission channel is switched automatically, and the instructions sent by the external device are received. The information that can be received by the computer host is generated and sent to the computer host according to the designed time sequence, so as to realize the simulation key person of various parameters in the remote device information. After parameter typing, the control will be returned to the keyboard and mouse in time to restore the normal control function.
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sunny He
[Email] sales@xiongbagk.cn
[Mobile] 86-18059884797
[WhatsApp] 86-18059884797
[Skype] sales@xiongbagk.cn
Same day shipment of 1000 parts
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