Introduction
Control Logix is a __________ bit computer
32
The first part of the tag is the ________ of the module.
Location
The normally open instruction is called __________.
Examine if Open
Convert a conventional two-button start-stop push-button station for a motor starter into PLC format.
See example
The three types of timers are: __________, __________, __________
On delay, off delay, retentive
List the four different programming languages Control Logix can be programmed in
Ladder logic, function block diagram, sequential function chart, and structured text
Until a module receives its _______ the module does not know how it is to operate.
I/O configuration
Complete a truth table for NOT logic.
Input Signal NO Instruction NC Instruction
ON TRUE FALSE
OFF FALSE TRUE
The main components of ladder logic are __________, __________, and __________.
Rungs, branches, and instructions
The timer stops timing when accumulated and preset values are _________
Equal
Control Logix chassis slot numbers are numbered starting with slot _____ on the far left and incrementing in _____ numbers to the right.
0, decimal
To create a tag representing how long to mix a solution, we would create a tag called mixer.The data type for this tag is __________.
Timer
Name the four categories of PLC Programming projects.
1. The program to be written is being converted from standard schematic to PLC.
2. We are starting a new application from scratch.
3. We are upgrading to a newer system.
4. We are modifying a current project.
When the ONS sees a false-to-true transition, the instruction sends a "one-shot" signal to the output instruction, which will execute only __________.
Once
Each time the counter instruction sees a __________, a count up counter's accumulated value is incremented by 1.
Transition from false to true
Control Logix I/O updates occur __________ to the scan of the logic scan.
Asynchronously
If you create a BOOL tag, _____ bits of memory would be consumed
32
What are the three different tasks in a PLC project?
Continuous Tasks, Periodic tasks, and Event Tasks
What is the RES instruction used for?
Reset the RTO timer back to 0
If a counter is overflowed or underflowed, will the controller fault?
No
Today, the most popular network for new applications for information transfer between controllers, HMI's, and VFD's is __________.
Ethernet/IP
What does the Style parameter set up in the Edit or Monitor Tags window?
Style defines the radix in which the tag's information is displayed in an instruction. The default style is decimal.
Convert a combination input logic program of two parallel limit switches and a series control relay that is controlling a pilot light to PLC ladder format.
See example
Enter and run the program in the handout. Answer these questions:
1. After 5 seconds, stop the motor. What happens to the accumulated value of the RTO timer?
How do you signal the timer that maintenance has been done?
It stays the same.
Through the done bit
Management has requested that the total number of cars parked in a parking garage for up to 31 days is recorded. There is a status bit or flag that can be used to easily trigger saving the total cars parked, at startup each day. What is that status bit?
Count Up