0:03
in today's rapidly evolving world of
0:05
manufacturing and automation it's
0:07
essential to understand how programmable
0:09
logic controllers PLC's operate however
0:12
many common misconceptions about PLC's
0:15
can create confusion we will clarify
0:17
five widespread myths about PLC's
0:20
focusing on their unique functions
0:21
programming challenges and the need for
0:23
a thorough approach to their use by
0:26
addressing these myths we can gain a
0:27
deeper understanding of how PLC's
0:29
enhance efficiency and precision in
0:31
modern manufacturing let's explore the
0:34
realities of PLC's and discover the
0:35
facts that highlight their essential
0:37
role in today's industry continue until
0:40
the end to clarify a bonus myth detailed
0:43
information contained in this video can
0:45
be found at accoamation.ca
0:47
a link has been put in the description
0:50
the website offers extensive links
0:52
references and coding samples making it
0:55
a one-stop shop for all your automation
0:57
queries accutomation.ca
1:01
myth one PLC's and CNC's are the same
1:05
while both programmable logic
1:07
controllers PLC's and computer numerical
1:10
controls CNC's play pivotal roles in the
1:12
realms of manufacturing and automation
1:14
they cater to distinctly different
1:16
functions and are not interchangeable
1:18
plc's are sophisticated systems
1:20
engineered to control and automate a
1:22
wide range of industrial processes they
1:25
excel at managing a variety of inputs
1:26
and outputs orchestrating the seamless
1:28
collaboration of numerous components
1:30
within a production environment these
1:32
versatile controllers are frequently
1:34
employed in assembly lines where they
1:36
monitor and regulate the flow of
1:37
operations ensuring efficiency and
1:39
consistent performance their
1:41
applications extend to complex process
1:44
control and general industrial
1:45
automation making them indispensable for
1:47
maintaining smooth and coordinated
1:49
workflows on the other hand CNC's
1:52
specialize in the meticulous control of
1:54
machining tools providing the precise
1:56
management of movements required to
1:58
fabricate components with exacting
2:01
these systems are integral to modern
2:03
machining processes where they translate
2:05
computer aided designs into tangible
2:07
products by commanding the intricate
2:09
motions of cutting drilling and milling
2:11
tools CNC's enable manufacturers to
2:13
produce highquality parts with
2:15
remarkable accuracy meeting the
2:17
stringent demands of today's engineering
2:21
myth two PLC programming is just simple
2:24
outdated ladder logic
2:27
while basic ladder logic can be pretty
2:28
straightforward for simple tasks the
2:30
reality of modern industrial processes
2:32
often demands more intricate and
2:34
sophisticated programmable logic
2:36
controller PLC programs today's
2:39
programmable logic controllers PLC's
2:41
utilize a variety of programming
2:43
languages as established by the
2:45
International Electrotechnical
2:46
Commission IEC 611313
2:50
these languages include structured text
2:52
which resembles conventional programming
2:53
languages like C or Pascal function
2:56
block diagram sequential function chart
2:58
and of course the traditional ladder
2:59
diagram ladder logic was developed in
3:02
the 1960s to facilitate the work of
3:04
electricians with electrical relays even
3:07
today it may surprise you that this old
3:08
method remains popular despite the
3:10
availability of new software options
3:12
such as Python or C-based systems many
3:15
factories still prefer the traditional
3:17
ladder style where the logic is laid out
3:19
step by step as industrial applications
3:21
become increasingly complex a solid
3:24
understanding of these various
3:25
programming languages is more important
3:27
than ever this technical knowledge
3:29
enables engineers and technicians to
3:31
design and implement advanced solutions
3:34
that address the specific needs of
3:35
modern manufacturing and processing
3:37
environments far from being obsolete
3:40
programmable logic controllers PLC's are
3:42
continually evolving to meet the demands
3:44
of industry they are becoming more
3:46
integrated with higher level systems
3:48
such as SCADA supervisory control and
3:50
data acquisition and MEES manufacturing
3:53
execution systems enabling improved
3:56
monitoring control and optimization of
3:58
processes additionally many modern PLC's
4:01
incorporate advanced functionalities
4:03
that enhance their performance and
4:06
their intrinsic reliability and robust
4:08
ability to function in harsh and
4:09
challenging environments make PLC's
4:11
indispensable across a wide range of
4:13
industries from automotive and
4:15
pharmaceuticals to food processing and
4:17
energy these versatile controllers are
4:19
critical to ensuring efficient safe and
4:21
consistent operations in diverse
4:26
myth three PLC programming is just about
4:30
one of the biggest misconceptions about
4:32
PLC programmable logic controller
4:34
programming is that it's simply about
4:36
writing code in reality it requires a
4:39
strong understanding of the physical
4:40
processes being controlled here are a
4:42
few key areas a PLC programmer needs to
4:44
focus on understanding the process a
4:48
good PLC programmer needs to know how
4:50
the machines work this includes
4:51
understanding their mechanics the
4:53
electrical and hydraulic components
4:54
pneumatics use of gas and systems and
4:58
without this knowledge it's challenging
5:00
to create effective programs safety
5:02
considerations when programming PLC's
5:04
safety is crucial mistakes can lead to
5:07
equipment damage injuries or even
5:08
serious accidents therefore it's
5:10
essential to test programs thoroughly
5:12
follow safety standards such as SIL
5:14
ratings and ensure that strong error
5:16
management is in place troubleshooting
5:18
skills programmers need to be good at
5:20
identifying and fixing problems that can
5:22
arise in real world scenarios this
5:24
includes dealing with electrical issues
5:26
mechanical failures and logical errors
5:28
in the programming successful PLC
5:31
programming goes far beyond just coding
5:33
it requires in-depth knowledge of the
5:35
machinery and a strong commitment to
5:37
safety and reliability
5:39
if you are enjoying this video please
5:40
hit the like button below keeping up
5:42
with all the latest automation
5:43
innovations can be difficult so hit the
5:45
subscribe button remember to hit the
5:48
bell beside your subscription to receive
5:52
myth four debugging troubleshooting is
5:56
when debugging programmable logic
5:58
controllers PLC's the process is
6:00
different from traditional programming
6:03
plc's operate in real time and
6:05
continuously scan for inputs and outputs
6:07
this means you can't easily pause the
6:08
system to examine your code without
6:10
disrupting the ongoing processes instead
6:13
of stopping the execution debugging
6:15
requires you to monitor the system while
6:17
it is running this often involves
6:19
monitoring tag values in real time
6:21
understanding how the system scan cycles
6:23
work and making precise adjustments to
6:25
the live system it's essential to be
6:28
cautious as changes made during
6:29
operation can affect the entire process
6:33
myth five naming comments and sound
6:35
coding practices are not necessary in
6:40
plc programmable logic controller
6:43
programs are often perceived as simpler
6:45
and more self-contained compared to
6:47
other types of programming this
6:49
perception can lead some people to
6:50
believe that adhering to good
6:51
programming practices such as using
6:53
clear naming conventions providing
6:55
comments and employing a modular design
6:57
is less critical however the truth is
7:00
quite the opposite when you overlook
7:02
these essential practices your code can
7:04
become difficult to understand
7:05
troubleshoot and modify this challenge
7:08
becomes even more pronounced if someone
7:10
else needs to work on the code or if a
7:12
significant amount of time has passed
7:13
since you last interacted with it
7:16
neglecting good programming practices
7:17
can lead to an increase in errors and
7:19
inefficiencies if the logic in your
7:21
program is poorly structured the
7:22
likelihood of encountering bugs rises
7:25
additionally making updates or changes
7:27
can become a cumbersome task which slows
7:29
down the entire process maintaining high
7:32
standards in your PLC programming not
7:34
only improves code quality but also
7:36
enhances the overall efficiency and
7:37
reliability of the system benefiting
7:39
both current and future users
7:43
bonus myth plc's are not vulnerable to
7:48
plc's are tough but they can still face
7:51
several issues electrical noise
7:53
interference electromagnetic
7:55
interference EMI and radio frequency
7:58
interference RFI can disrupt PLC
8:01
operations good shielding and grounding
8:04
are essential environmental factors
8:06
extreme temperatures humidity dust and
8:08
corrosive substances can wear down
8:10
hardware over time power issues power
8:13
surges fluctuations or outages can
8:16
corrupt memory or damage components io
8:19
module failures faulty input output
8:22
modules can lead to incorrect readings
8:24
or malfunctioning devices cyber security
8:28
programmable logic controllers PLC's can
8:30
be targets for cyber attacks so it's
8:32
essential to protect them to maintain
8:34
the safety of critical infrastructure
8:36
plc programming is a multidisciplinary
8:39
skill that integrates software
8:40
development principles with a
8:42
comprehensive understanding of
8:43
industrial processes electrical systems
8:46
and essential safety considerations
8:49
this field requires ongoing learning and
8:51
a practical hands-on approach
8:54
there are many different PLC
8:55
manufacturers with their own hardware
8:57
and software all programmable logic
9:00
controllers share similar basic features
9:02
to learn how to approach learning about
9:03
basic PLC's click here
9:07
click here to learn more about how PLC
9:09
simulators can be used to help your
