5SHX1445H0001 逻辑控制模块选用dcs之前首先要明确应用的目标，提出对DCS功能的要求，确定系统的规模。一般都需要仪表自动化、工艺负责人及计算机的负责人、设计院项目负责人几方面讨论确定，以达到最大限度地满足生产和操作的要求。应用DCS的目标提高装置生产及管理水平提高生产效率（提高收效），降低生产成本，节能，降耗，提高产品质量，提高生产方案变化的灵活性及适应性，提高装置的管理水平，提高故障分析的科学性和生产管理标准化，有利于劳动竞赛，挖掘生产潜力。提高装置的控制实现装置稳定化控制及操作优化，实现先进控制，实现顺序逻辑控制，实现设备故障诊断和联锁保护，实现局部或全装置的最优化控制，生产及管理水平的提高，控制水平的提高，将为实现装置“安、稳、长、满、优”生产发挥重要作用，具有显著的经济效益和社会效益。这些目标可以分阶段考虑，逐步应用、开发，系统亦将逐步扩展以实现最终目标。
5SHX1445H0001
ABB 5SHX1445H0001数据采集和存储功能：模拟输入信号的扫描时间，数字信号的扫描时间，历史数据存储（包括调整趋势、历史趋势）的种类、点数和周期，输入信号的处理功能。控制功能：具备完整的监测、调节和顺序控制功能及设备运行监视、联锁保护等功能，反馈控制功能的最大能力（输入输出的种类、数量、逻辑运算能力、顺序步骤，执行周期），过程控制语言能力（如ST、FORTRAN，BASIC，C或其他的控制语言），先进控制软件的要求。显示功能：CRT尺寸、颜色，画面刷新时间，画面种类与数量。显示画面包括总貌画面、流程图画面、控制分组画面、调整画面、趋势画面、过程报警画面、系统报警画面、系统状态画面、操作日志画面、历史查询画面等，并具有窗口（多个、拉伸、重叠）显示功能，汉字功能以及触屏功能。
5SHX1445H0001
报警功能：模拟输入/输出信号报警（绝对报警、变化率报警），数字输入/输出信号报警，仪表停用（校验、停扫描）报警，系统部件（卡件、网络）故障报警，相邻报警时间分辨率，报警管理功能（如历史查询过滤、报警组设置、报警点组的优先级、报警抑制功能等）。报表和屏幕拷贝功能：即时报表功能，定时报表功能（包括时报、班报、日报、月报、年报），报警汇总记录，操作记录报表，操作或参数修改打印，打印机屏幕拷贝功能。操作安全：操作权限口令询问功能，工程师、操作员钥匙键功能，MAN/AUT/CAS切换无扰动功能，冗余措施。
5SHX1445H0001
Before selecting dcs for the 5SHX1445H0001 logic control module, it is necessary to first clarify the application objectives, propose requirements for DCS functions, and determine the scale of the system. Generally, it is necessary to discuss and determine from several aspects, including instrument automation, process leaders, computer leaders, and design institute project leaders, in order to maximize the satisfaction of production and operational requirements. The goal of applying DCS is to improve the production and management level of the device, improve production efficiency (increase efficiency), reduce production costs, save energy, reduce consumption, improve product quality, improve the flexibility and adaptability of production plan changes, improve the management level of the device, improve the scientificity of fault analysis, and standardize production management, which is conducive to labor competition and tap into production potential. Improving the control of the device to achieve stable control and operational optimization, achieving advanced control, sequential logic control, equipment fault diagnosis and interlocking protection, achieving optimal control of local or entire devices, improving production and management levels, and improving control levels will play an important role in achieving “safe, stable, long, full, and optimal” production of the device, with significant economic and social benefits. These goals can be considered in stages, gradually applied and developed, and the system will also gradually expand to achieve the final goal
5SHX1445H0001
ABB 5SHX1445H0001 data acquisition and storage function: scan time of analog input signals, scan time of digital signals, type, number and period of historical data storage (including adjustment trend and historical trend), and processing function of input signals. Control function: Equipped with complete monitoring, regulation, and sequential control functions, as well as equipment operation monitoring, interlocking protection and other functions, with the maximum ability of feedback control function (type and quantity of input and output, logical calculation ability, sequential steps, execution cycle), process control language ability (such as ST, FORTRAN, BASIC, C or other control languages), and requirements for advanced control software. Display functions: CRT size, color, screen refresh time, screen type and quantity. The display screen includes a general view screen, a flowchart screen, a control group screen, an adjustment screen, a trend screen, a process alarm screen, a system alarm screen, a system status screen, an operation log screen, a history query screen, etc. It also has window (multiple, stretched, overlapping) display function, Chinese character function, and touch screen function.
5SHX1445H0001
Alarm function: Analog input/output signal alarm (absolute alarm, rate of change alarm), digital input/output signal alarm, instrument shutdown (calibration, stop scanning) alarm, system component (card, network) fault alarm, adjacent alarm time resolution, alarm management function (such as historical query filtering, alarm group setting, priority of alarm point group, alarm suppression function, etc.). Report and screen copy function: real-time report function, timed report function (including daily reports, shift reports, daily reports, monthly reports, and annual reports), alarm summary records, operation record reports, operation or parameter modification printing, printer screen copy function. Operation safety: operation permission password inquiry function, engineer and operator key key function, non disturbance function for MAN/AUT/CAS switching, redundancy measures.
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