SCYC51090 58053899E ABB 处理器模块

SCYC51090 58053899E ABB 处理器模块

ABB脉冲板卡SCYC51090 SCYC51010 SCYC51020应用备件主要是一个由过程控制级和过程监控级组成的以通信网络为纽带的多级计算机系统，综合了计算机（Computer）、通讯（Communication）、显示（CRT）和控制（Control）等4C技术。DCS包括过程级、操作级和管理级。过程级主要由过程控制站、I/O单元和现场仪表组成，是系统控制功能的主要实施部分。操作级包括：操作员站和工程师站，完成系统的操作和组态。管理级主要指工厂管理信息系统（MIS系统），是DCS更高层次应用。PLC多采用单片微型计算机，集成度高，再加上相应的保护电路及自诊断功能，提高了系统的可靠性。编程容易。PLC的编程多采用继电器控制梯形图及命令语句，其数量比微型机指令要少得多，一般的小型PLC只有16条左右。且由于梯形图形象而简单，因此容易掌握、使用方便，甚至不需要计算机专业知识，就可进行编程。DCS系统结构采用容错设计，单台设备计算机故障不会导致整个系统紊乱。另外系统中计算机承担任务单一，常采用具有特定结构和软件的专用计算机，使系统中每台计算机的可靠性提高。采用模块化、标准化、开放式设计，各计算机采用局域网方式通信，如需改变系统功能时，拆卸或新增计算机不影响其他计算机工作。ABB脉冲板卡SCYC51090 SCYC51010 SCYC51020通过组态软件根据不同的流程应用对象进行软硬件组态，即确定测量与控制信号及相互间连接关系、从控制算法库选择适用的控制规律以及从图像库调用基本图形组成所需的各种监控画面和报警画面，从而方便所需的控制系统。

整个系统工作流程可以简单描述如下：系统上电后，首先DSP由flash实现自举，并运行引导程序，之后转入EDMA等待状态，FPGA初始化后等待外部图像采集命令，收到图像采集命令后开始进行图像采集，并对采集到的图像进行预处理，预处理后的图像经过FIFO缓冲，在存储一定量的数据之后，FPGA通过半满信号向DSP发送EDMA请求，等待DSP响应，DSP一旦收到来自FPGA的EDMA请求，立即建立EDMA通道，从FIFO中读取数据到L2存储器，存满一帧图像后DSP开始图像压缩，等待一幅图像压缩完成之后，DSP会向FPGA发送中断信号，FPGA在收到中断信号后开始从 FIFO中读取压缩后的图像数据。一帧数据读完后，判断编码信号是否有效，如果有效则按同样的规则对下一帧图像进行压缩，如果无效则通知DSP结束。

SCYC51090 58053899E ABB 处理器模块

ABB pulse board SCYC51090 SCYC51010 SCYC51020 application spare parts is mainly a multi-level Computer system composed of process Control level and process monitoring level, which is linked by Communication network and integrates 4C technologies such as computer, communication, CRT and control. DCS includes process level, operation level and management level. Process level is mainly composed of process control station, I/O unit and field instrument, and it is the main implementation part of system control function. The operation level includes: operator station and engineer station to complete the operation and configuration of the system. The management level mainly refers to the factory management information system (MIS system), which is a higher-level application of DCS. PLC mostly adopts single-chip microcomputer, which has high integration, and the corresponding protection circuit and self-diagnosis function improve the reliability of the system. Programming is easy. The programming of PLC mostly adopts relay control ladder diagram and command statement, the number of which is much less than that of microcomputer instructions, and there are only about 16 general small PLC. And because the ladder diagram is vivid and simple, it is easy to master and use, and it can be programmed without computer professional knowledge. The DCS system structure adopts fault-tolerant design, and the failure of a single equipment computer will not lead to the disorder of the whole system. In addition, computers in the system undertake a single task, and special computers with specific structures and software are often used to improve the reliability of each computer in the system. Modular, standardized and open design is adopted, and all computers communicate by local area network. If the system functions need to be changed, removing or adding computers will not affect the work of other computers. ABB pulse board SCYC51090 SCYC51010 SCYC51020 uses configuration software to configure the software and hardware according to different process application objects, that is, to determine the measurement and control signals and their connection relationship, to select the applicable control law from the control algorithm library, and to call various monitoring pictures and alarm pictures needed for basic graphics from the image library, thus facilitating the required control system.

SCYC51090 58053899E ABB 处理器模块