Digital I/O

Some useful information on Digital IO modules and their use

Readback Operating Speed of 40-412

Some guidance on the read back speed of the 40-412 when determining input states

Driving External loads with Digital IO

Some advice on using Digital IO to drive external loads such as relay coils

Driving inductive loads

Avoid EMC problems when driving inductive loads

Protecting Relays with Digital IO

Digital IO can be used to help protect relays from accidental overload in applications where a direct connection to a power supply, or ground, is made 

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