Dear experts,

When I changing the TDC program online, even only connect a signal, the CPU load will increase a lot, from normally overall 60% to over 90%. Is it normal for a CPU551? or I can do some thing to avoid it? Our CPU is CPU551 (0BA2).

Thanks a lot.

KSN

Hello.

How do you connect online? Via local CPU interface (DUST1) or via some CP?

 Via TCP/IP netcard from the engineering station to CP51M1 TDC side.

I have used SER function for  you CPU  and  the load is not high.

maybe you have to check the runtime.

我使用过和你一样的TDC模块，而且CPU的负载没有这么大。 

而且我的通讯程序都是在T1周期内，都没有这么大的负载。

怀疑有堵塞。