|
In general, PLC output modules are designed to switch high current loads directly
|
|
1
|
277
|
June 29, 2026
|
|
Temperature transmitter question
|
|
1
|
1133
|
March 23, 2024
|
|
Mixing and Filling Machine Control
|
|
0
|
80
|
December 1, 2023
|
|
What is NAMUR and NON-NAMUR?
|
|
1
|
1453
|
November 20, 2023
|
|
Issue with PLC
|
|
0
|
85
|
November 10, 2023
|
|
The scan time is the time required ___
|
|
1
|
1049
|
July 25, 2023
|
|
The output of a PLC counter is energized when ___
|
|
1
|
987
|
July 25, 2023
|
|
PLC counters are normally non-retentive
|
|
1
|
804
|
July 25, 2023
|
|
Optical isolation used in I/O modules helps to reduce the effects of electrical noise
|
|
1
|
486
|
July 25, 2023
|
|
An inductive proximity sensor is actuated by conductive and ___
|
|
1
|
559
|
July 25, 2023
|
|
Analog signals can have only two states
|
|
1
|
589
|
July 25, 2023
|
|
A PLC down-counter (CTD) counter counts ___
|
|
1
|
638
|
July 25, 2023
|
|
The maximum current rating for the individual outputs of an AC output module ___
|
|
1
|
518
|
July 25, 2023
|
|
The purpose of the optical isolator is to ___
|
|
1
|
785
|
July 6, 2023
|
|
One advantage of discrete relay contact output modules is that they can be ___
|
|
1
|
509
|
July 5, 2023
|
|
The main difference between a PLC retentive and non-retentive timer is ___
|
|
1
|
3077
|
June 26, 2023
|
|
The PLC chassis comes in different sizes according to the ___
|
|
1
|
869
|
June 21, 2023
|
|
Modbus TCP/ip Remote IO Recomendation
|
|
0
|
873
|
February 15, 2023
|
|
For the PLC analog I/O control system shown, the fluid flow is controlled by ___
|
|
2
|
1123
|
October 7, 2022
|
|
The retentive timer reset (RES) instruction is always given the same address ___
|
|
0
|
413
|
July 6, 2022
|
|
Some PLC counters operate on the leading edge of the input signal
|
|
0
|
441
|
July 8, 2022
|
|
The counter accumulated value is the current count based on the ___
|
|
0
|
532
|
July 8, 2022
|
|
Fiber optic sensor systems are completely immune to all forms ___
|
|
0
|
406
|
July 20, 2022
|
|
In a PLC system, there is a physical connection between field input devices ___
|
|
0
|
560
|
July 25, 2022
|
|
The input/output system forms the interfaces through which field devices ___
|
|
0
|
386
|
July 25, 2022
|
|
A personal computer communicates with the PLC processor ___
|
|
0
|
386
|
July 25, 2022
|
|
PLC systems usually require as much space in an enclosure ___
|
|
0
|
356
|
July 25, 2022
|
|
Shielded twisted pair cable is used for connecting to thermocouple inputs ___
|
|
0
|
427
|
July 25, 2022
|
|
The processor may perform functions such as timing, counting, and comparing ___
|
|
0
|
324
|
July 25, 2022
|
|
If you had a hand-held programming terminal from one manufacturer ___
|
|
0
|
411
|
July 26, 2022
|