Concerning figure "B" of the illustration, if the illustrated PLC ladder diagram is for a simple motor controller, what do the "Internal relay 1" load and contacts represent? See illustration EL-0236.

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Programmed bits of data stored in memory used to execute the stop command when the normally open, momentary contact stop pushbutton switch (Input 2) is depressed.

Answer

An electro-magnetic relay internal to the PLC used to execute the stop command when the normally closed, momentary contact stop pushbutton switch (Input 2) is depressed.

Answer

An electro-magnetic relay internal to the PLC used to execute the stop command when the normally open, momentary contact stop pushbutton switch (Input 2) is depressed.

Answer

Programmed bits of data stored in memory used to execute the stop command when the normally closed, momentary contact stop pushbutton switch (Input 2) is depressed.

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