CPU running at 90% just to display screen?

[AMitchneck]

I have a T7A with two controllers: GE Fanuc Ethernet and Modbus slave (TCP/IP). The Modbus Slave is configured to echo tags from GE. The panel is also configured to support VNC and FTP connections.

My screens are sometimes very slow (1+ minutes to change screens), so I added the System CPU percent tag to my startup screen. The CPU runs, on average, 90%! What is taking all the CPU time????

Is there something I can do to reduce this overhead (10% overhead for user actions is not enough to keep screen actions smooth)?

[Edmund]

You have probably chosen a hardware that is to week for your application.

Try use the T7B instead.

Here is also a pdf with some guidelines for optimizing a iX application.

http://ftc.beijer.se/files/C125728B003A ... 00324a.pdf