3721 TRICONEX

Hardware faults can be judged from the man-machine interface and the process channel respectively.It is easier to deal with the human-machine interface failure,because only one of the multiple workstations fails,as long as the processing is timely,it will generally not affect the monitoring operation of the system.Process channel faults,such as on-site I/O modules or primary equipment,will directly affect the control or monitoring functions,and the consequences will be serious;the technical requirements for repair personnel are also high,and it is also a problem for instrument workers to keep things in order.test.

硬件故障可分别从人机接口和过程通道两方面来判断。人机接口故障处理起来要容易些，因为多个工作站只会是其中的一个发生故障，只要处理及时一般不会影响系统的监控操作。过程通道故障，如发生在就地I/0模件或一次设备时，将直接影响控制或监视功能，其后果比较严重；对修理人员的技术要求也要高，处事不乱对仪表工也是一个考验。