Array electronic SR Series User Manual

Controladores lógicos programables PLC baja gama expandibles entradas digitales AC 74368-SR22MRDC ARRAY Manual Ingles www.viaindustrial.com
Controladores lógicos programables PLC baja gama expandibles entradas digitales AC 74368-SR22MRDC ARRAY Manual Ingles www.viaindustrial.com
3.1.7 NAND with RLO Borderline Test
In SR, the symbol is as shown in follows:
Only when the status of at least one of the input is 0 and statuses of all the inputs in
the last period are 1, the output status of this NAND with RLO borderline test is 1.
If one input line of this function block (X) is unconnected, then the status of this input
is X=1.
Time diagram of NAND with RLO borderline test is as shown in follows:
3.1.8 NOR
Serial connection of a certain In SR, the symbol of NOR is as
NC contacts is shown in the line shown in follows:
Diagram as follows:
In NOR function block, when the statuses of all the inputs are low potential (status 0),
then the output is connected (status 1). If the status of any input is high potential
(status 1), then the output is opened (status 0).
Logic frame of NOR:
I1 I2 I3 I4 Q
0 0 0 0 1
0 0 0 1 0
0 0 1 0 0
0 0 1 1 0
0 1 0 0 0
0 1 0 1 0
0 1 1 0 0
0 1 1 1 0
1 0 0 0 0
1 0 0 1 0
1 0 1 0 0
I1 I2 I3 I4

Array electronic SR Series Specifications

General

Brand	Array electronic
Model	SR Series
Category	Controller
Language	English