P
Medium/large PLCs contain ? I/O modules that control input devices and output components.
Rack mounted
The higher the voltage rating is for a load, the ? the current rating is for any given power rating.
Lower
The ? of the motor will be directly proportional to the analog signal received.
speed
The ? is reserved by the CPU for processing data.
Reserved File
When an output instruction is in a rung ? the output, the instruction will change state on the next scan.
above
All PLCs are considered “ ? ” electrical equipment and must be mounted in an enclosure.
Open type
? are the most common programming devices used with PLCs.
Personal Computers
Some PLCs require the analog signal to first be ? into a signal that is within the specified range of the input section or module.
converted
Three of the program files are always used: the system file (file 0), the reserved file (file 1), and the ? .
Main Program file
Typically, RES instructions are used only with ? , CTU, or CTD instructions.
RTO
Extra care must be taken when using a ? command because it overrides all safety features and protocols designed into a program.
Force
An example of a common input device is a ? .
Proximity Switch
A(n) ? device is any of the various types of sensors that measure a variable change in an environmental or operating condition and convert that change into a proportional voltage or current signal.
Analog input
Within the data table files, ? of the files are default files.
9
An RES instruction is ? when the logic preceding the instruction on a rung is ? .
True/True
What is/are the requirement(s) for arc-rated protective clothing?
a. Clothing must have an insulating value high enough to allow heat to dissipate through clothing and away from the skin.
b. Clothing must not ignite and continue to burn.
c. Clothing must provide resistance to the break-open forces generated by the shock wave of an arc.
Which of these is not a function of an interface device?
It multiplies the number of available input contacts.
Analog output signal ratings include all but ? .
5mA to 20mA
The inputs and output files of fixed PLCs are considered slot ? for addressing purposes.
0
Counter instructions are located in data table file ? .
5
The recommended list of PLC spare parts in house includes I/O modules equal to ? of the total number used in the system.
10%
In a(n) ? circuit, a coil is used to close normally open contacts with a magnetic force that develops when the coil is energized.
electromechanical relay
SSRs are available in analog models that accept a 0 VDC to ? .
10 VDC
? instructions are false when the address of the instruction contains a “1.”
XIO
Counter instructions can be used to ? .
a. count products
b. monitor the number of cars in a parking lot
c. track inventory