پرسش‌های رضا یوسفی (٣)

Customers are responsible for preventing unauthorized access to their plants, systems, machines and networks. Such systems, machines and components should only be connected to an enterprise network or the internet if and to the extent such a connection is necessary and only when appropriate security measures (e.g. firewalls andlor network segmentation) are in place.

Providing a dark current of approx. one-third of the rated value through an incandescent lamp

The PLC  or outputs  may remain ON or OFF due  to deposits on or burning of  the  output relays