ABB AC 900F学习笔记113：Freelance_Engineering_Process_Stations-19

继续学习

5.1.4 Redundancy statuses

冗余状态

Status diagram of the Primary

主控制器节点状态

no OS 没有操作系统	No active operating system 没有活动的操作系统
no redundant 没有冗余	The operating system is loaded but the user program is not yet loaded. 操作系统加载，用户程序未加载
no Secondary 无备控制器	Opearing system and user programs are completely loaded. The Secondary has not yet logged on at the Primary 操作系统和用户程序完全加载。 备控制器没有在主控制及注册
not sync 没有同步	The Secondary controller is present, the operating system and the user program have been loaded, but the process statuses have not yet been adjusted and the synchronization is therefore not yet concluded. 备控制器准备好，操作系统和用户数据已经加载，但是过程站没有调整，因此同步尚未结束。
sync 同步	NORMAL status of a redundant process station. The Secondary is synchronized and ready for a redundancy toggle. The cyclic data adjustment between the two redundancy partners is performed during program processing. 冗余过程站的通常状态，备控制器同步，且准备冗余切换。在程序处理期间 两个冗余伙伴之间执行周期数据调整。
Redundancy Error 冗余错误	Redundancy not possible. The controller cannot achieve “sync” status. By stopping and then restarting the resource, it was attempted several times to reach the “sync” status. 冗余不可能。控制器达不到同步状态。通过停止和重启资源，尝试数次达到同步状态。

 

Possible causes of a redundancy error:

可能导致冗余错误

• loading of the user program could not be successfully completed
• 用户程序的加载不能完全完成。
• the system utilization is too high, the redundancy link cannot be maintained
• 系统利用率过高，冗余链路无法维护。
• the configured task cycle times are too short
• 配置的任务周期太短
• both controllers are equipped with different modules
• 两个控制器配置有不同的模块
• a module reports a fault
• 模块报告故障

 

 

Status diagram of the Secondary

备控制器节点状态

no OS 没有操作系统	Operating system not active. The Secondary controller is waiting for the transmission of the user program 操作系统没有活动 备控制器等待传输用户程序
not sync 没有同步	THe Secondary has logged in on the Primary, the user program has been loaded, but the process statuses have not yet been adjusted and the synchronization is not yet concluded 备控制器已经在主控制器上注册，没有加载用户程序，但是过程站尚未调整，同步没有结束，
sync 同步	The Secondary is synchronized and ready for a redundancy toggle. The cyclic data adjustment between the two redundancy partners is performed during program processing 备控制器同步，准备冗余切换。两个冗余伙伴之间的周期数据调整在程序处理期间执行。

 

 

The redundancy status of a resource can be evaluated using the system variable xxxx.RedState. 资源的冗余状态可以通过系统变量xxxx.RedState来评估。

 

See Redundancy statuses on page 115 and Engineering Manual, IEC 61131-3 Programming, System variables.

参阅第115页冗余状态和工程手册，IEC 61131-3程序，系统变量