You're one of the few people, besides Ron Beauford, who gets to the bottom of what is actually happening with regards to how the instructions and processor scanning work. I can't tell you how excited and happy I am to have found your channel!!
Wow Tim! Thank you for this video. Demonstrating that XIC and XIO are not normally open/closed contacts was perhaps one of the most valuable statements you have made in your videos. Because they are not normally open or closed contacts! Lol. Thanks again your videos are amazing and very helpful.
Great explanation. Sometimes it is better to explain something as a new concept rather than trying to associate it with something you already know. Thanks!
As an instructor it's refreshing to see someone properly explain this. My electrician students often have a hard time not associating XIC & XIO with electrical schematic symbols.
As a student, I can tell you it is hard the first time you are trying to wrap your head around it, because it is SO similar to ladder logic line diagrams used in hard wiring relays in motor controls.
TortureBot the PLC was invented by General Motors in 1968 to reduce the time it took to re-tool a production line each year. To add a relay or timer to an existing control cabinet could take as much as four hours of labor by an electrician, or a few minutes to program it. Ladder logic code was invented for PLCs and its similarity to relay logic schematics was deliberate. The idea was, if you understood relays, it shouldn’t be that big of a leap to understand Logic. However, the appearance of the rungs and symbols is the only similarity and can be misleading to a novice at first glance. In relay logic we’re concerned with electric continuity through a hard-wired circuit. In LadderLogic we are concerned with logic continuity on a rung of code. They are not the same. The first has electrons flowing through wires, whereas the PLC has 1s and 0s being analyzed by a processor. In the hard-wired circuit, to get a signal from “A” to “D”, we have to physically connect wires from “A” to “B” to “C” to “D”. In a PLC, the processor simply sends a 1 or 0 directly from “A” to “D”, regardless of what “B” and “C” are up to. This is a bit of an over-simplified example but the point is, in a PLC, forget about the hard-wires and their schematic symbols. It’s not a normally-opened or -closed relay that represents a physical contact in a circuit; it an XIC or XIO that represents a coded Boolean instruction in a processor. Hope this helps further clear it up, and keep watching Tim’s videos. Wish they were around when I was trying to get my head wrapped around this, about 100 years ago ;-)
Hi Tim I love your videos I work at Perdue and I'm trying to become more advanced with micrologix rs logic 500 my job sometimes tell me I can go a school but in the end they change there minds so I'm learning on my owe with the help of my Boss when he has time but I want to be the best I have access to any hardware that I need but I just need understanding
Thank you Tim. Very basic and important topic and explained very clearly. I always get confused between NO and XIC AND NC and XIO. I used to have wrong understanding NO and XIC are same thing NC and XIO are same thing.
Great info. Trying to get electrical symbols out of my head while learning XIC and XIO. I won't argue with my instructor. You're right, might get you bad grades. Can I argue with YOU though on one thing? Isn't that a forward slash you keep referring to as a backslash? :P
I wouldn't recommend any SLC or Micrologix trainers unless you have a very specific need. Both are on their way to being phased out. I would look at the Micro800 or Compactlogix.
The IP address and subnet will be dependent on your Ethernet configuration. Not sure I understand your question about having to configure the channel every time.
You're one of the few people, besides Ron Beauford, who gets to the bottom of what is actually happening with regards to how the instructions and processor scanning work. I can't tell you how excited and happy I am to have found your channel!!
Glad you found us! Ron is a friend who I have a lot of respect for.
Man, I haven't heard Ron's name in forever. PLCTalk?
Well done Tim, Finally someone explain it right!!!! Great video.
Thanks Al!
Wow Tim! Thank you for this video. Demonstrating that XIC and XIO are not normally open/closed contacts was perhaps one of the most valuable statements you have made in your videos. Because they are not normally open or closed contacts! Lol. Thanks again your videos are amazing and very helpful.
Yes breaking people from associating the XIC/XIO with normally open/normally closed is a large challenge.
Absolutely correct. Normally open/ normally closed contactors or relays are not boolean instructions.
Great explanation. Sometimes it is better to explain something as a new concept rather than trying to associate it with something you already know. Thanks!
You're welcome 😁
As an instructor it's refreshing to see someone properly explain this. My electrician students often have a hard time not associating XIC & XIO with electrical schematic symbols.
Thanks Erin. Let me know if you think of any topics that we should do videos on.
As a student, I can tell you it is hard the first time you are trying to wrap your head around it, because it is SO similar to ladder logic line diagrams used in hard wiring relays in motor controls.
TortureBot the PLC was invented by General Motors in 1968 to reduce the time it took to re-tool a production line each year. To add a relay or timer to an existing control cabinet could take as much as four hours of labor by an electrician, or a few minutes to program it. Ladder logic code was invented for PLCs and its similarity to relay logic schematics was deliberate. The idea was, if you understood relays, it shouldn’t be that big of a leap to understand Logic. However, the appearance of the rungs and symbols is the only similarity and can be misleading to a novice at first glance.
In relay logic we’re concerned with electric continuity through a hard-wired circuit. In LadderLogic we are concerned with logic continuity on a rung of code. They are not the same. The first has electrons flowing through wires, whereas the PLC has 1s and 0s being analyzed by a processor.
In the hard-wired circuit, to get a signal from “A” to “D”, we have to physically connect wires from “A” to “B” to “C” to “D”. In a PLC, the processor simply sends a 1 or 0 directly from “A” to “D”, regardless of what “B” and “C” are up to. This is a bit of an over-simplified example but the point is, in a PLC, forget about the hard-wires and their schematic symbols. It’s not a normally-opened or -closed relay that represents a physical contact in a circuit; it an XIC or XIO that represents a coded Boolean instruction in a processor.
Hope this helps further clear it up, and keep watching Tim’s videos. Wish they were around when I was trying to get my head wrapped around this, about 100 years ago ;-)
Kudos to this video. your explanation is excellent 💯
Thank you!
I just starting PLC and these videos have been a big help
Glad you found them helpful!
Hi Tim I love your videos I work at Perdue and I'm trying to become more advanced with micrologix rs logic 500 my job sometimes tell me I can go a school but in the end they change there minds so I'm learning on my owe with the help of my Boss when he has time but I want to be the best I have access to any hardware that I need but I just need understanding
Hi Brian. Glad you like it videos! Let us know if there are any topics you want covered
Thank you Tim. Very basic and important topic and explained very clearly. I always get confused between NO and XIC AND NC and XIO. I used to have wrong understanding NO and XIC are same thing NC and XIO are same thing.
Glad this video helped, thanks for watching!
Thank you so much!!!
You're welcome!
Thank you
You're welcome
Great info. Trying to get electrical symbols out of my head while learning XIC and XIO. I won't argue with my instructor. You're right, might get you bad grades. Can I argue with YOU though on one thing? Isn't that a forward slash you keep referring to as a backslash? :P
You are probably right, I say the wrong one often :)
Tim , Good Morning. What are the price rsnges of SLC500 trainers?
I wouldn't recommend any SLC or Micrologix trainers unless you have a very specific need. Both are on their way to being phased out. I would look at the Micro800 or Compactlogix.
do I have to configure the channel every time and is the IP address same for every, as also the subnet Mask?
The IP address and subnet will be dependent on your Ethernet configuration. Not sure I understand your question about having to configure the channel every time.
@@TimWilborne Oh I get it, thank you. where did the subnet 255.255...... come from?
@@judgeokoh6806 This will give you a little more information.
Any one else randomly get this video on auto play?
I don't know how UA-cam determines auto play videos but we sure are glad you found us!