|
The scan time is the time required ___
|
|
1
|
288
|
July 25, 2023
|
|
The output of a PLC counter is energized when ___
|
|
1
|
286
|
July 25, 2023
|
|
PLC counters are normally non-retentive
|
|
1
|
262
|
July 25, 2023
|
|
Optical isolation used in I/O modules helps to reduce the effects of electrical noise
|
|
1
|
117
|
July 25, 2023
|
|
An inductive proximity sensor is actuated by conductive and ___
|
|
1
|
152
|
July 25, 2023
|
|
Analog signals can have only two states
|
|
1
|
143
|
July 25, 2023
|
|
A PLC down-counter (CTD) counter counts ___
|
|
1
|
129
|
July 25, 2023
|
|
The maximum current rating for the individual outputs of an AC output module ___
|
|
1
|
184
|
July 25, 2023
|
|
The purpose of the optical isolator is to ___
|
|
1
|
264
|
July 6, 2023
|
|
One advantage of discrete relay contact output modules is that they can be ___
|
|
1
|
138
|
July 5, 2023
|
|
The main difference between a PLC retentive and non-retentive timer is ___
|
|
1
|
1460
|
June 26, 2023
|
|
The PLC chassis comes in different sizes according to the ___
|
|
1
|
315
|
June 21, 2023
|
|
Modbus TCP/ip Remote IO Recomendation
|
|
0
|
225
|
February 15, 2023
|
|
For the PLC analog I/O control system shown, the fluid flow is controlled by ___
|
|
2
|
464
|
October 7, 2022
|
|
The retentive timer reset (RES) instruction is always given the same address ___
|
|
0
|
213
|
July 6, 2022
|
|
Some PLC counters operate on the leading edge of the input signal
|
|
0
|
232
|
July 8, 2022
|
|
The counter accumulated value is the current count based on the ___
|
|
0
|
278
|
July 8, 2022
|
|
Fiber optic sensor systems are completely immune to all forms ___
|
|
0
|
178
|
July 20, 2022
|
|
In a PLC system, there is a physical connection between field input devices ___
|
|
0
|
268
|
July 25, 2022
|
|
The input/output system forms the interfaces through which field devices ___
|
|
0
|
168
|
July 25, 2022
|
|
A personal computer communicates with the PLC processor ___
|
|
0
|
195
|
July 25, 2022
|
|
PLC systems usually require as much space in an enclosure ___
|
|
0
|
156
|
July 25, 2022
|
|
Shielded twisted pair cable is used for connecting to thermocouple inputs ___
|
|
0
|
223
|
July 25, 2022
|
|
The processor may perform functions such as timing, counting, and comparing ___
|
|
0
|
152
|
July 25, 2022
|
|
If you had a hand-held programming terminal from one manufacturer ___
|
|
0
|
215
|
July 26, 2022
|
|
Hot swappable I/O modules are designed to be changed ___
|
|
0
|
158
|
July 26, 2022
|
|
Light is used in I/O modules to separate the real-world electrical signals
|
|
0
|
162
|
July 26, 2022
|
|
HMI screens are developed using a software package on a PC ___
|
|
0
|
184
|
July 26, 2022
|
|
The sum of the backplane current drawn for all modules in a chassis ___
|
|
0
|
204
|
July 26, 2022
|
|
The schematic diagram is an example of how a PLC output module is connected to ___
|
|
1
|
215
|
August 1, 2022
|
