COM18. ModbusTCP Client via Siemens S7-1200/S7-1500 PLC and TIA Portal

[@etiennemarcoux3498]

This video is perfect! The 30min is worth every second! Thank you so much for this!

[@electricalautomation]

Glad you like it! Yes, most of my videos are little bit long, but they were all organized and included with all correlated information (reason, motivation, and solution), I have been trying to make my videos as 'one stop solver' for the related topic. Welcome!

[@waymamma]

Fantastic video! Very well produced and with clear explanations, thanks so much for your efforts!

[@electricalautomation]

Glad it was helpful! Welcome!

[@ndukwehenryibiam]

One of the best tutorials on MODBUS....if not even the very best detailed one here. Thanks so much sir

[@egrabhishek]

Thank you for the awesome video and for all the help. Just a small tip for any one struggling with SIEMENS PLC 1212C When using MOD_BUS_CLIENT >> Set the correct slave address in System Generated MB_CLIENT_DB. Set MB_UNIT_ID to your required Slave Address (Default in SIEMENS is 255). Upload program and restart the PLC for changes to take effect. Use the same Slave Address in your Desktop application as well. Hope it helps someone.

[@electricalautomation]

Thanks for pointing it out, and highlight this issue my dear friend. I also discussed shortly at 30:58 in the video. The UNIT_ID is a very explicit hidden behind, figuring out this can save many time during the ModbusTCP communication troubleshooting.

[@sarahmoody7574]

As per all the other comments this is a fantastic video, thanks so much as I was much in need of it! Modbus all configured and now understood for future use!

[@electricalautomation]

Glad it helped!

[@arbjful]

This is great tutorial for starting on Siemens MODBUS communication, I found this very helpful for starting on MODBUS TCP communication. You have explained the concept very clearly and descriptively. Thanks for posting video.

[@electricalautomation]

Glad it was helpful! Welcome to my channel!

[@arbjful]

@@electricalautomation I have a question regarding Disconnect flag, is this always False?? No need to set True?? For some reason the Status always shows 7002..I don't know why

[@electricalautomation]

@@arbjful "Disconnect" should be OFF. ON at here means disconnecting the communication connection. Please view carefully all the settings and parameters. Also check the settings from your server-side, it also may be blocked by the windows firewall.

[@pablojuliano4066]

Great video to understand how to use modbus client in tia portal. Thank you for the explanation!

[@electricalautomation]

Glad it was helpful! Welcome!

[@michaelpopelianski]

Excellent video!! Well explained in great detail.

[@banci1100]

YOU ARE HAVING A VERY USEFUL VIDEO ON THE EARTH FOR THIS TERM!! Thanks alot.

[@electricalautomation]

Thank you so much for your comments! WELCOME!

[@electricalautomation]

Thank you so much for your comments! WELCOME!

[@kgauravb]

Very informative thank you for sharing such valuable knowledge. 👏🙏

[@electricalautomation]

So nice of you! Welcome!

[@felipepaiva4798]

Congratulation for the video and thanks for the tips! I tested the Modbus client mode of PLC with a Cobot UR10 (Universal Robots) as server, and had a good comunication to data exchange. So, that is an item that i like to share with everybody, in my case the error 8383 appears when i begin the comunication and to solve this error i change the "Data_len" parameter (Before: 15 | After: 5) and after this, both comunicate normally reading and writing to/from the address of cobot! OBS: The data was at format "int".

[@electricalautomation]

Thanks for watching and thanks for your sharing. According to the 'int', I guess you are using holding register 4xxxxx. and probably the Cobot provides 5 registers to communicate. Therefore, 15 length didn't work. Good to hear it works. Thanks!

[@moisesbraga9393]

Great vídeo man! Props to you. This one will help me a lot. I just subscribed to your channel.

[@electricalautomation]

Welcome! Thanks a lot!

[@willyhoffmans315]

Perfect video! thanks a lot, save me a lot of time!

[@electricalautomation]

Glad it helped!

[@gabrieldigiuseppe3106]

Incredible! Thank you very much for the excellent video

[@electricalautomation]

Glad you enjoyed it!

[@MarcoMolino-tb5yw]

incredibly complete video, thank you very much!!

[@electricalautomation]

Thanks! Glad it would be helpful!

[@wandersonpereira9884]

Awesome video, man. You saved my life! Thanks.

[@electricalautomation]

Glad it helped! Welcome!

[@Floggi-f5l]

Thanks a lot. The Unit ID part was my problem.

[@MrDannesboe]

This is an excellent video.! thank you.! Keep up the good work

[@electricalautomation]

Thanks, will do!

[@WilloooIsBlue]

Huge thanks for this video, helped me out massively with a project I was working on. -TKC

[@electricalautomation]

Glad it helped! Welcome!

[@rangaswamy8604]

Good series of videos on communications. Thank you.

[@electricalautomation]

Glad you like them! I am working two videos talking about the ModbusTCP between Siemens and Allen-Bradley PLC. They will be launched in next week.

[@jrffabiano2544]

Ótima aula professor! Parabéns 👏👏👏

[@electricalautomation]

Thanks!

[@d.militomilito2002]

Really good explanations! you are the best.

[@electricalautomation]

Glad you like them! Thanks for watching!

[@ΠαναγιώτηςΧατζηαντωνίου-ι7θ]

Thank you very much for this great video!

[@electricalautomation]

Glad it was helpful!

[@liteglow2000]

@Electrical Automations : Can you show an example when adding 2 or more MODBUS units ? do it all over again, or use the same blocks ?

[@electricalautomation]

You can change the settings for the 'target address and modbus address' to switch the communication target, OR , can multiple ModbusTCP Client FB and instance DBs to communicate with different target.

[@prataps2341]

Thanks for detailed explanation! Two questions: 1. Isn't there need to use any function codes such as 01H to read output coil objects, 02H to read input coil object, 03H to read holding register and many more types of function codes? 2. If I defined S7-1200 CPU as a Modbus server, how can we assign the modbus addresses to tags...for example MW50, M10.0?

[@electricalautomation]

yes, you can run 01H or 02H. please check the video 11:58 the "MB_DATA_ADDR" 1 to 9999, 10,001 to 19,999. Regarding your second question, MB_DATA_PRT at 16:49 is the PLC tags for matching the Modbus registers

[@rucahuenu3252]

Great JOB ! Thank you very much to share it !

[@electricalautomation]

Welcome! I glad you like them!

[@mateussilva3756]

Nice explanation! I have a question: What requisition conditions would you use if you had to read data from more than 2 unit_ID in the same slave?

[@electricalautomation]

Thanks for watching, Usually one device/ basically one brand of device will only have one unique Unit ID, the settings can be found from 31:00. I never saw a device with two Unit_ID. If incase a device have, then use another FB and instance DB to Call read/or write

[@muhammaddanyal2077]

Yes the question is correct , because this can happen while reading dsta from Rtu to TCP gateway which can have multiple devices with unique unit ids and same ip of gateway

[@krzysztofsurgot4537]

Hi, from the other side. I'm wondering about a difference. We can create Function Block and multi-instance of MB_CLIENT instead of the usual Function and Single instance of MB_CLIENT (like in your video). Both ways a program works correctly though which choice is better (including optimization)? Thank you for the video, outstanding work!

[@electricalautomation]

Yes, for multiple FB call, you can use multiple instance DB in one FB call. Multiple instance look nice and great organized, but it is slightly pain when you are doing trouble shoot. It depends on if you did the communication test before or not, if yes, then you can use multiple instance.

[@krzysztofsurgot4537]

@@electricalautomation Now it's clear and obvious. Thank you :)

[@t3n0n79]

Can you use UDTs istead of arrays for the read data db?

[@electricalautomation]

I don'e think so, because it is PTR from FB

[@althafali1667]

Finally, it's working very very thanks

[@electricalautomation]

Welcome 👍

[@samershurman877]

Hello, Thanks for the video, I do the same, but could not read data from (modsim64) or any other reader. I try tens of times but it is not working at all. Please any suggestion to solve that matter?

[@electricalautomation]

There is no any hidden operation in the video. It includes every thing. Would you pls let me know your hardware, OS, and TIA Portal software revision you are using?

[@businemahesh6706]

​@@electricalautomationSir, i am also facing same issue. From Modsim i am unable to establish the connection. Regarding hardware, i am using s7-1516-3 plc & windows 11 os & TIA v19. Pls help me in this regard

[@daigealbertas]

Thanks! Great video and perfect explanation!!!

[@electricalautomation]

Glad it was helpful! Thanks for watching! Welcome!

[@kme8134]

Thank you!!! Very good explanation.

[@electricalautomation]

Glad it was helpful! Welcome!

[@alfonsogustavo91]

Nice video man, thanks!

[@electricalautomation]

Glad you liked it!

[@automatewithcajetan]

Great video!

[@electricalautomation]

Glad you enjoyed it

[@kellymejino2288]

Thank you for the video. How did i know the remote port? The 502?

[@electricalautomation]

502 is a common port number used by Modbus TCP. The port number can be set from the Modbus Server side.

[@fabiobettanello2625]

Very useful, thank you!

[@electricalautomation]

Glad it was helpful!

[@adnansheikmytheen7549]

If we connect multiple meters via modbus gateway where we need to set the slave device ID in PLC program

[@electricalautomation]

If the target devices are less than 8, then you can use different instance DB "like shown 5:00 DB10". Each device has a unique instance DB, ID, ADDR IP address as shown at 8:40

[@viswajeethakuthota3286]

Data transfer is okay but how to switch on / off the coils I don't want to read any data I want to simply on/ off coils in modbus function it is selected as 3 how to change it??

[@electricalautomation]

operating the individual bool/coil needs to call the other Modbus FC code. but it is not efficient in the PLC CPU level communication. The common way is that using FC06 16 for exchanging WORD, then using PLC logic to decode the WORD into 16 bits.

[@donvaryvengesa4711]

well explained i have learnt a lot , just one question - if i want to establish communication with S7100 and Motoman Robot using Modbus , is there any file that i have to install on TIA

[@electricalautomation]

To implement Modbus via TIA Portal and S7-1700/1500, you do not need to install additional package, using built in FB and programming discussed in this video is good.

[@PhotoshopTutorialsInTamil]

Thank you ❤️

[@electricalautomation]

Welcome! Thanks for watching!

[@khbatman9]

Thank you for your video. It's a great.

[@electricalautomation]

Glad you like it! Thanks

[@sabahatibrar620]

Great explanation

[@electricalautomation]

Thanks for watching!

[@marinfrankovic5152]

Hello sir, your video is really good and i really liked it, well explained 🙂 this is a rather stupid question but i want to ask, for the server/client the devices must be plc-s? In my case i have a plc with profinet cable going to a switch were then arrive two cables connected via modbus tcp protocol. Can this fb and this logic also be implemented here? Best regards!

[@electricalautomation]

Thanks for your watching! You can use Fb and use two instances DB, each one serve one Modbus TCP logic connection.

[@crja4114]

Nice Video, thanks man

[@bobeldukla]

Very helpful. Thank You very much..

[@electricalautomation]

Glad it was helpful! Thanks, Please view more videos from the play list kzbin.info/aero/PL762SfoJC-e8Ng4OlME8WfQxf9qBhNTJh

[@mohabsayed-xl3dg]

readings are in word data type , how i can change to real type to match with actual reading ?

[@electricalautomation]

A real variable comes with 4 bytes, but each modus register only takes two bytes. So either slipt a real and transfter it as two words, or using * 10 then.using Int instead if your real value is less than 6553.5

[@mattmeyer8141]

Got this to work just like you said! thanks so much for the detailed expalanation!. Question for all of you. I have a datalogger that is going to pull data out of several PLC's. Should I make my data logger the master (server) and keep my plc's all slaves?

[@electricalautomation]

Glad my video is helpful. If you going to use a software to pull the data, your datalogger will run as Modbus Client(master), your PLC will run as Modbus Server (Slave). You could refer my video kzbin.info/www/bejne/qpLGpJuvd9OGppI for running the Siemens PLC as Modbus TCP Server case.

[@chabochavo651]

Does this method work for multiple slaves on modbus rtu also? Whats different?

[@electricalautomation]

This example is for point to point. For multiple object, you have to program to target to different IP and copy the receive buffer to other data block, or use different Fb call with different instance DB.

[@Preethigrace]

Do we need to add the modbus block in the tia portal or we can directly connect plc to pc via modbus? will u please respond for this soon

[@electricalautomation]

You need to program the PLC for the modbus communication. If you are going to do Modbus RTU, you also.need to purchase RS232/RS485 modlue by using s7-1200. This video is talking about Modbus TCP, it is RJ 45 ethernet port.

[@standard_user]

How is it possible to read and write the same Modbus adress? Lets say in the holding register 40001 is for Start/stop/Auto/Manual etc. and i want to read at first the actual state and then wirte to 40001 bit 8 (for example the start bit)? I wann use the modbus mapping from the Siemens Climatix PLC

[@electricalautomation]

You have to plan your 120 Modbus registers into two areas for inputs and outputs respectively.

[@mb_3000]

Hi I was wondering if you can help me. I have a schrack meter connected to a moxa modbus mb 3000 and my job is to interpret measurements made my the meter in c++. My question is how to connect the modbus to my pc and do you think this tutorial alone is enough to make a valid connection to modbus and will I be able to program in visual studio using the registers? Thank you in advance.

[@electricalautomation]

I am not using and programming C++. For your question, you have to figure out how to use C++ running as Modbus Master (Client) function to connect the Schreck meter. It would be not a easy job unless you can find a proper specialist who did this feature before. Good luck

[@fabianhatz8053]

I still have the status 16#80A4.16#7001, 16#7002. I cannot establish a connection, what could be the reason? anyone have any ideas?

[@mitulsuthar3519]

what could we do if we have to read the data with different offsets parameters?

[@electricalautomation]

You have to read an entire segment, then sort them out by your own program

[@r-beanmondy6203]

Thanks for your video, it's very helpful. Could I use it to communicate to actuator sensor using Modbus? With the same steps?

[@electricalautomation]

Yes, the method will be very similar. You could read the manual from this actuator and see the FC16 or other register variable.

[@shadreckmugabe4841]

You are a star 🎉🎉🎉 , what a tutorial , consider offering online classes , if yes l want the details my lecturer.

[@electricalautomation]

Many thanks! Which kinds of topic you are planning to learn? Please find the my playlist, they include many interesting topics.

[@lucianogutierrez936]

Thanks a lot for this amazing video! I have a question, I need to communicate three different servers. Can I add three different MB_CLIENT blocks? It's ok to call three at the same time?

[@electricalautomation]

Sure you can. S7-1200 has 8 TCP connection resources. Use different instant DB name for those three calls.

[@lucianogutierrez5259]

@@electricalautomation Thanks for your reply. So, to obtain different parameters of the same device I will call MB_CLIENT several times, with de same ID, IP, and instance data block; ensurig that each individual Modbus TCP request finishes execution. What do you thik about that?

[@electricalautomation]

@@lucianogutierrez5259 No. To use one Client to communicate three Server, you need to call three times MB_CLIENT with three different instant DBs. The parameters for the "CONNECT" are individually for each FB call.

[@lucianogutierrez5259]

@@electricalautomation Well, finally, to read two diffent parameters of one server I call two times MB_CLIENT with the same DB, but two different CONNECT variables. It's OK? CONNECT variables will only differ on ID (connection reference/identifier)? On S7-1200 System Manual V4.5 (13.8.4.2 Example: Legacy MB_CLIENT 1: Multiple requests with common TCP connection) uses the same CONNECT_ID. I'm so confusing about that. Thanks so much for your attention!

[@electricalautomation]

@@lucianogutierrez5259 Use different Instant DB, please. each call use different CONNECT variables. In the CONNECT, their target IP, can be the same target server. means this PLC does not know you are communicating one server or two server, IT ONLY CARES THE CONNECTION AND DATA.

[@achirayabhaswrr3678]

that's awesome vdo, just curious How many modbus client block can be used? example if we have 12 modbus devices to communicate with.

[@electricalautomation]

You need to check with A-B support for the resources of the controller you are using, because this AOI need TCP Socket resources. But You could also try cyclic change over the parameters and target on the AOI parameters, so do ONE TIME ONE TARGET, this will take only one connection resource.

[@simonemoser9490]

Many thanks, you are the best I have a problem, i receive the data in the index 2 instead that in the index 1, why?

[@electricalautomation]

Most likely your address mapping has issue. And what do you mean about the "index". Can you show which min in the video?

[@simonemoser9490]

I mean that i receive the data in the position 1 of the array instead the position 0. I have another issue, i can read the data but i can't write the data, what could be the problem?

[@simonemoser9490]

My server is a hmi

[@bmw23i47]

Awesome, Thanks!

[@electricalautomation]

Welcome! Thanks!

[@masrooralam6565]

Thanks a lot for such a nice explanation sir. I got issue my connection is continuously connecting and disconnecting showing status 7002 and 80C5. I am using TIA V14SP1 with PLCSIM V14SP1.

[@electricalautomation]

I don't think PLCSIM none advanced can do this communication test.

[@afiffizer5084]

Can i use PLC Sim for run the program?

[@mohdaatif882]

hiiii,,,,, i am using this modbus tcp ...its working but when i am using NC and NO contact of %m0.5 clock bit for recieving and sending data then its permanent off condition and transmission is done one side ....its not working like On-Off

[@electricalautomation]

You can set MB0 to be controlled by the CPU, the setting is at the CPU property. The CPU can automatically control the bits to be different HZ.

[@mohdaatif882]

@@electricalautomation i used m0.0 but ots not working like on off bit

[@mohdaatif882]

@@electricalautomation and enabled the m0 bit from system and clock memory but its not work

[@electricalautomation]

@@mohdaatif882 You need to set the system clock memory and download the CPU

[@mohdaatif882]

hi sir , continue status error 80C8,, how to fix it

[@omkardeshpande6999]

Incredible to me!!

[@electricalautomation]

Thanks! Glad you like them

[@afiffizer5084]

Where you get device plc_sql_ha?

[@RohitChavanTM]

Nice 👍🙂

[@vatsalthaker2122]

My boss give me task to setup this block and make communication with plc you save my day thanks hoping to get more videos...😅😊

[@electricalautomation]

Hi Buddy, Glad to her the video could help! Welcome and thanks for watching!

[@aminfamili5318]

Hello and thanks for the great video. I am dong the project but the status is #7002. What should I do?

[@aminfamili5318]

Do you use just one Ethernet socket on your PC? Is it possible to get online and send and receive Modbus packet at the same time using just one ethernet socket?

[@electricalautomation]

One physical ethernet port can be used for multiple tasks, e.g. Profinet, TCP, Modbus TCP etc. For an initial setup, you can use an empty CPU for a test.

[@huyvo9402]

can you make a setup to show us how to read/write 300 registers from slave device?

[@electricalautomation]

Hello, for Modbus communication, the longest registers can read OR write is around 252.

[@maldyniel6362]

Can i ask u,why array must 120?

[@darudxd6415]

There is no must, the array should be as long as the value written in DATA_LEN. He made array of 120 for simplicity. Note that the array of registers (read and write) should not be longer than 125. You can see that in help page of MB_CLIENT function block

[@sameerraj8933]

Thank you

[@electricalautomation]

You're welcome!

[@girishgajghate1367]

Thanks for sharng this video. Can u Please Upload a video for Modbus RTU.??

[@electricalautomation]

I don't have the hardware for the RS485 port, but Modbus RTU is the similar idea. Just the function block is not the same.

[@ethantu1976]

Hello， 如果寄存器是间断的，如何做轮询？或者要读多个server？

[@industrialplcprogramming2452]

hello there. i tried everything all the steps you have done and copy it doesnt work on my simulation. i used PLCSIM advance 4.0 and tia portal v17. my siemens ethernet address end with 137 these numbers i put in the remote ip address and my plc address ends with 140. the results only 7002.i hope u can try using plcsim advanced.

[@electricalautomation]

I would recommend you use the hardware for the test. Or contact Siemens if you purchased the Sim software.

[@rezamagham4495]

I am a client and I have 5 server . How I can copy my same data on server 2 and 3 simultaneously?

[@electricalautomation]

You can use 5 Fb call with 5 different instance DB. Note the ID, Target IP address, Local Port should be difference, as shown at 8:23

[@mauriciolinhares8232]

Hello! How can I get the address 12000 to 12076 ? Thank you!

[@electricalautomation]

Your MB address can be set as 12000

[@mauriciolinhares8232]

@@electricalautomation Yes, but in the modbus slave program I can only do it if it is in function (02) input status! And this function keeps subwriting the words! 😢

[@chanathipyaemounsuk6017]

TIA Portal 17 Can use function block Modbus TCP ?

[@electricalautomation]

Yes

[@wesleybarcelonista]

HI I HAVE THE STATUS ERROR (80A4). NEED HELP PLEASE THANKS

[@electricalautomation]

Which FB block show the error 80A4? 80A4 has different meanings on different FBs. But most likely your PLC cannot find the remote device. Check the settings from the other device.

[@Time4yes]

That means I can connect my arduino to my plc right?

[@electricalautomation]

If your arduino support modbus protocol, that could be done

[@Time4yes]

@@electricalautomation yes it does, I use codesys soft plc with it and it works fine.

[@jims9916]

thanks a lot for this excellent video. I get the error code 80C5. the status is toggling between 80C5, 7001 and 7002 . I am doing this test on PLCsim.Please can u help. Thanks

[@electricalautomation]

You'd better use hardware or PLCSimAdvance.

[@rezamagham4495]

Perfect

[@electricalautomation]

Thanks! Welcome!

[@MGil-b1e]

can I also do this with s7 1500?

[@electricalautomation]

Yes

[@MDArman-zi9se]

Very good video

[@paulescalante7986]

beast

[@АликПоляков-ь7л]

Good explain

[@electricalautomation]

Thanks for liking! Welcome!

[@prabhu0820]

great!

[@electricalautomation]

Thanks!

[@ricardojohanrojasyupan6022]

GRACIAS PAPU

[@mehmetsukrumeydanc424]

ALLAH RAZI OLSUN

[@thohayvietnam1809]

Em đang cần support Modbus TCP của S7200. CÓ phí ạ. Bác giúp em với

[@electricalautomation]

Not sure I understood your word correctly, I am using translator. Are you asking if you can use S7-200 for Modbus TCP. Unfortunately, it can not. If you are using Smart S7-200 PLC. It can, but the old style S7-200, it can not do Modbus-TCP. You can use an Modbus-TCP/RTU adapter using as bridge.

[@thohayvietnam1809]

@@electricalautomation i wrong typing. S71200 with modbus TCP,

[@thohayvietnam1809]

@@electricalautomation please teamview help me.

[@electricalautomation]

@@thohayvietnam1809 My remote support is billable not for free and I have no time for remote support recently since I am very busy these days. Also In this video, I started from scratch and there is no hidden info. so if you review carefully and follow the steps, you should implement them successfully.

[@JaikumaR_JacK]

Mass

[@matioz9125]

Ok

[@sourenamehr6087]

Perfect explanations my friend. Xie Xie

[@electricalautomation]

Glad you liked it Thanks!

[@beckenbauer1974]

How can you read and write at the same time?

[@electricalautomation]

Modbus read and write could use the same holding area. So you have to organize the read and write task.

[@jakobdannesboe9900]

This is an excellent video.! thank you.! Keep up the good work

[@electricalautomation]

Thanks, will do!

[@exodussian]

Perfect

[@electricalautomation]

Thanks!