Understanding Modbus Serial and TCP IP

[@moneshrathod]

one of the best video on youtube.

[@ME1D]

Totally agree, simple, fun, and easy to watch and understand.

[@ianaitchison9434]

A really interesting video explaining clearly the basics of Modbus - Thank you

[@Nazirulnaim-u7x]

Thank you for bringing the bigger picture in this field.

[@march11stoneytony]

This is exactly what i was looking for! Thank you

[@patelshailesh8722]

Very good concept clear video

[@grounded9623]

So clear and concise. Thanks.

[@punishedgoy9131]

Fantastic video

[@gnourtmmahp]

Thanks dude this really helped me a lot I did the steps that's you did thanks man!

[@narongsakthongkaew9112]

Thanks for basic concept training.

[@faizalraazy91]

🎉 thank you so much

[@torjemusic2830]

Thanks very much. If they are some example about how to send the message from the Master to Slaves, It would be perfect bus still was great. Thanks

[@machain1996]

Excelent video!

[@vladimirpotapov7050]

Thank you a lot!

[@rusbelhernandez4834]

Very well done! thanks

[@megamanwins]

Thank you for sharing!

[@RixtronixLAB]

Creative video,thanks :)

[@sgmsgm692]

Thanks a lot to give me information

[@azur7362]

Can someone explain the difference between the adressing system and the function codes? If you define the read, write, read/write by picking certain adresses, why would the function codes matter? I'm probably misunderstanding something. Thank!

[@johnbuiatti366]

We have an application wherein we are trying to extract information WITH A PC from a PLC. Do PROSOFT products have a provision/product for this?

[@kushdadiyala4721]

GREAT

[@moradecarime5480]

Thank you

[@bennguyen1313]

Modbus kinda sounds like CanOpen.. is there any connection?

[@vanhetgoor]

This talk gives much insight, but I must say that back in the old days a lot of thing could be improved. Silly things like Word Swap could have been prevented if from the start on the rules would be followed strictly. Time and money was spilled, confusion never eases communication.

[@olegluzanov6012]

🎉🎉

[@cani77]

Thx

[@ivanbratanov8699]

Is it possible the Modbus TCP/IP network to include more than one master device?

[@wheretimehasnovalue9343]

nope

[@hajjamisaid6740]

thanks bro

[@aadityachandratre78]

What does protocol means?

[@haydenhoodless2055]

Protocols are a set of rules and practices that are used in communication. In order for communication to happen between two or more parties, whether it be human beings or electrical devices, there must be ground rules in how it's done. Think about two people communicating. When two people talk, they have to agree on a language to use, it makes little sense in two people speaking different languages to eachother if neither of them understand the other. And they have to agree on timing and how messages are presented to eachother. Are they speaking in the same room? Are they texting? If they're not in the same room, and one person is choosing to communicate by writing messages on a piece of paper which can't be seen, and the other is speaking to a wall and can not be heard, communication can't happen. They also can't communicate if they're both speaking to eachother at the same time. The agreements and rules two people make when communicating, albeit not done necessary consciously, are protocols. Likewise, two or more devices can't communicate with each other without using the same protocol. There's no point in one device sending serial binary messages over a copper cable if the other device is expecting messages to come in morse code manually entered by an operator.

[@xsardas1999]

So can i just hook up modbus devices to regullar network?

[@abhijitmahapatra5506]

If it supports modbus over TCP/IP

[@tejaswinir5655]

Can some one tell me i m getting confused RS-485 support 32 slave /247 slave

[@brianmurphy5150]

You can have 31 slaves on a single segment but can have a lot more if you have repeaters, up to 247. You are allowed 32 nodes per segment but for the first segment only 31 slaves as the master/client is considered a node

[@Happy-cz8ft]

I think you are confusing "Modbus" and "RS-485" characteristics. Attributing ones attributes to the other makes it more confusing.

[@bright601]

He is not confusing anything. RS 485 is not a communication protocol. It is simply a cable that can also be used in modbus TCP/IP. It is only a physical layer specification that can be part of modbus over Ethernet (not serial).

[@Happy-cz8ft]

@@bright601 Thank you for the knowledge. If I may ask, how does a physical layer dictate how many nodes can be on a loop? (copper is just copper) I've always thought that part of the "RS-xxx" standard was a communication protocol. I'm just hopping to get a better understanding

[@bright601]

@@Happy-cz8ftHi, I suggest you read and research about the OSI Model. Hopefully it clears things up.