"The IC693MDL645 is a 24-volt DC Positive/Negative Logic Input belonging to the 90-30 Series of Programmable Logic Controllers. It can be installed in any Series 90-30 PLC system that has either a 5 or 10 -slot baseplate. This input module has both positive and negative logic characteristics. It has 16 input points per group. It utilizes one common power terminal. The user has two options for powering field devices; either supply the power directly or use a compatible +24BDC supply.
The IC693MDL645 module’s dual logic characteristics makes it ideal in applications that require electronic proximity switches, limit switches, and pushbuttons. It is important to note that the wiring and current identification information is located on an insert. This insert is located between the inner and outer surface of the hinged door. The wiring information is located on the side of the insert facing outward. The current identification is located on the inside of the insert, so it is necessary to o