T8311
T8311
T8311
WinCC V6.2技术文档——通讯 – 诊断（中文）
说明通道及其变量以及内部变量的诊断。 该诊断可用于如通讯故障或出现意料之外的变量值等情况。
在运行系统中通常会首先识别出在建立通讯链接时发生的故障或错误。
使用 WinCC 变量的动态对象（不能提供当前过程值给它们）在过程画面内将显示为未激活状态。例如，这些对象可以是 I/O 域、滚动条对象或棒图。
如果故障不影响连接的部分 WinCC 变量，就表示某个 WinCC 变量是故障源。此时，应检查变量的编址或者图形编辑器中变量的拼写是否正确。如果故障影响连接的所有 WinCC 变量，就表示错误发生在连接本身。
章节描述定位错误源可采取的措施及可使用的工具。
to both conventional I/0 and various field bus devices such as Profibus, FF, CAN, and Modbus. system tool
It has a high degree of flexibility and excellent scalability, whether it is the control of small production units, or the control of ultra-large-scale whole plants – integrated control, even
The Industrial” system can handle the application of field equipment maintenance management and cross-plant production management control with ease.
An important member of the Industrial” family, the AC800F system fully embodies the Industrial” (Industrial Information) system pioneered and led by ABB in technology.
information technology) new trends.
The system is divided into two levels: operation management level and process control level. At the operation management level, not only the traditional control system monitoring operation function is realized
function (operation and display, printing, trend display and alarm), and also complete system hardware diagnosis and data exchange between different systems.
can. The process control stage realizes various loop adjustments including complex control (various PID, ratio, Simith, etc.) and high-speed logic control.
Control, sequence control and batch intermittent control functions.
The internal communication of the process control station (between the controller and various intelligent devices such as I/0 or field instruments) adopts the international standard field controller.
Wire. The field controller supports various field buses such as Profibus. Profibus is the most widely used open field bus in the world.
Line international standard, divided into FMS, DP
Industrial “is a world leading all-round comprehensive open control system launched by the automation headquarters of ABB group
It integrates the advantages of traditional DCS and PLC and supports a variety of international fieldbus standards. It has the complex analog loop regulation function of DCS
Friendly human-machine interface (HMI) and convenient engineering software, as well as high-speed logic and sequence control equivalent to high-grade PLC indicators
Braking performance. The system can connect not only conventional i/0, but also PROFIBUS, FF, can, MODBUS and other field bus devices. System tool
It has high flexibility and excellent scalability, whether it is the control
