Array electronic SR Series

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Controladores lógicos programables PLC baja gama expandibles entradas digitales AC 74368-SR22MRDC ARRAY Manual Ingles www.viaindustrial.com

3.1.3 OR

Parallel connection of a certain number of In SR, the symbol of OR

NC contacts is shown in the SR line is as shown in follows:

diagram as follows:

This function block is called as OR, because the status for at least one of the inputs I1,

I2, I3 or I4 is 1 (i.e. closed), then output Q is 1.

Logic frame of OR:

I1 I2 I3 I4 Q

0 0 0 0 0

0 0 0 1 1

0 0 1 0 1

0 0 1 1 1

0 1 0 0 1

0 1 0 1 1

0 1 1 0 1

0 1 1 1 1

1 0 0 0 1

1 0 0 1 1

1 0 1 0 1

1 0 1 1 1

1 1 0 0 1

1 1 0 1 1

1 1 1 0 1

1 1 1 1 1

3.1.4 NOT

The phase inverter is indicated in The symbol of NOT is as shown

SR line diagram as follows: in follows:

This function block is called as NOT, because if the input status is 0, then output Q is

1, and vice versa. In other words, NOT is the phase inverter for the input point.

Logic frame of NOT:

I1 Q

0 1

1 0

Array electronic SR Series - Page 27