VFD and PLC serial communication (RS485/Modbus-RTU)

The video shows ATO VFD (Variable Frequency Drive) communicates with Omron PLC (CP1E N40) with RS485 serial port . Buy ATO VFD online: www.ato.com/vfd
The video is divided into 3 blocks:
1. Hardware connection.
2. VFD communication settings, PLC software settings.
3. PLC program explanation.
Using a similar method of video, we can connect ATO VFD with mainstream PLCs such as Siemens PLC and Mitsubishi PLC to improve work efficiency.
Buy ATO VFD, single phase input & output, www.ato.com/si...
single phase to three phase, www.ato.com/si...
three phase input & output, www.ato.com/th...
Other ATO VFD video links, • VFD analog input (4-20...

[@ATOcom]

Note 2:59 should be: Transfer the VFD frequency storage address #2102 to D1303.

[@samwicks4885]

sir plz expalin when write data ( set Frequency) Run/Stop commands send to D1304. But When you Read Data you put #0004 to the D1304 as A Read Length, I Cant Understand that, PlZ Expalin it, From SriLanka

[@ATOcom]

@@samwicks4885 #0004 to D1302

[@aldrinsulbiano386]

more video to come you are so amaZing sir !!

[@Nguyen_Thanh_Toan_2302]

Where get to the VFD parametter. PLC's manual or Inventer's manual ??

[@chandararanget7879]

Thank for your work

[@phanduc7386]

Can you show me how to communicate rs232 (none protocol)

[@MrMtalhasiddiqui]

I have a plc omron CP1L-M connecting it with yaskawa v1000. Wiring and configuring all as per manual and right your program with appropriate register. But commled of my rs485 module is not blinking

[@ATOcom]

If the data transmission is normal, then OK.

[@sidewaysemu7977]

do you have an example of a program that sends a start signal, sends a stop signal, and sends a "high" speed to the inverter and sends a "low" speed to the inverter. I understand how to MOV the response to get a readable number but I don't understand how to structure the Modbus to send and receive different signals and when do do this. if you are reading values from a drive how often are you 'pulsing' the signal to get a response? are there any other suggestions for setting up modbus - like having a fail safe stop so that if the comms drops out then the drive will stop? any other suggestions would be greatly appreciated. Thanks mate!

[@ATOcom]

1. You need to know the frequency storage address of the VFD, as well as the start-stop address; 2. Prepare two MOV instructions, high-speed instruction & low-speed instruction, start instruction and stop instruction; 3. Send high-speed commands and low-speed commands to the VFD frequency storage area respectively through Modbus protocol; 4. Transmit the start command to the VFD via the Modbus protocol, and command the VFD to start (or stop) immediately; 5. You need to establish real-time communication between PLC and VFD (you can read VFD operating conditions such as frequency or current parameters at regular intervals); 6. When an error occurs in real-time communication, a special storage area bit will be set to 1. This data can be used to control the PLC output IO. 7. Use PLC's output terminal IO to control VFD by hardware when communication error occurs. , At least one of my ideas above. When you have a full understanding of Modbus, you will have many ways to achieve your goals. kzbin.info/www/bejne/mqG3npiAhKmXjLc

[@sidewaysemu7977]

@@ATOcom thanks so much for the response!

[@christinamalik5532]

I had plc Omron cp1-m60 and its connected with 2 inverter then I had alarm loss the communication what you think is problem?

[@ATOcom]

Check whether the communication parameters are correct, such as whether the inverter address is correct, the baud rate or the hardware connection is correct.

[@hamza4537]

Where to get the vfd adresses for all the parameters

[@ATOcom]

In the user's manual.

[@hamza4537]

@@ATOcom thank you I'll.check it out

[@ahmetozar7937]

I communicated with the yaskawa V1000 via weintek mt6070 hmi rs485 but the u1-03 amp monitor did not reflect the true value. thank you

[@ATOcom]

The received data cannot be used directly, and it needs to be converted or combined in hex.

[@ahmetozar7937]

@@ATOcom u1-03 hex adress 42 = 66 dec +1 add 67 I write but the data sounds different

[@ATOcom]

@@ahmetozar7937 Check whether the data in the adjacent memory is related.

[@ahmetozar7937]

@@ATOcomoutput current = 00FBH = 251 Developed when he wrote his address. Thank you for your interest

[@setiasianturi_]

when not connect to any device, does led CIF11 should on or off? mine always off, does it broken?

[@ATOcom]

The lights are always on.

[@md.jahidurrahman8874]

good job

[@chandararanget7879]

SOrry, How can we write multiple register???

[@iasindianeducation8483]

Bhai apna aawaj dalkar video banavo bas itni kmi hai varna aur jayada like milta

[@ATOcom]

OK

[@abdulwajid3584]

Hi... Thanks for the video.... Earlier I tried the same for fuji VFD but can't able to do it.... I will try once again.... Is the process is same for fuji VFD with RJ45 port?

[@ATOcom]

Sorry，I don’t know.

[@eurekaenglish8405]

Hello, please create content about PLC Omron communication with raspberry pi via RS485 (modbus)

[@gayanmadusanka2034]

What are fixed DM area for cj2m plc

[@ATOcom]

You can go to the official website of the PLC you own to download the manual and find it.

[@aautv4181]

thanks so much so how can i comunicate much more inverter to transfer frequency

[@ATOcom]

Add the VFD address program in the PLC.

[@Jarunbeeka]

How to change four VFD frequency by that mathed.. please add a video

[@ATOcom]

Set 4 different VFD station number addresses (P3.10) to: 001, 002, 003, 004, and call different VFD programs corresponding to the unused station number addresses.

[@Jarunbeeka]

@@ATOcom Thanks

[@eurekaenglish8405]

I want to ask which section or ladder program for RS485?

[@ATOcom]

2:15 to 2:32 for setting, no need ladder.

[@manonsylvain5197]

Hello, Can we use the same application for the NX1P2 ?

[@ATOcom]

Sorry, I have not used the NX1P2 series PLC, they may be similar in settings, but the DM fixed allocation word may be different. I suggest you download the NX1P2 unit operation manual on the OMRON official website to see how to use serial communication in the manual.

[@chandararanget7879]

I mean how can we change Frequency?

[@ATOcom]

ATO VFD frequency setting address is 2001H, you can use 06 command write 2001H to D1303 ,write frequency to D1304....

[@chandararanget7879]

Thank u

[@samwicks4885]

@@ATOcom Write fequency to D1304? It cant be understand, In the video when write data you Put command adresses to d1304 such as RUn,Stop(#0001/#0007)

[@ATOcom]

@@samwicks4885 You need to understand the Modbus RTU communication format, which is easy for you to understand. The principle is that by writing different data to the special storage area of the VFD, the VFD can execute different commands. This video will help you, kzbin.info/www/bejne/j6TXapyAa92ZncU

[@chandararanget7879]

how to write data to VFD ? Thank u

[@ATOcom]

ATO VFD frequency setting address is 2001H, you can use 06 command write 2001H to D1303 ,write frequency to D1304....

[@samwicks4885]

@@ATOcom PLZ explain this correctly,,,Above you corected the VFD fequency storge address as #2102 to D1303. At there You says #2001 to D1303. And YoU say Write Fequency to D1304. But in the video You put Commands( #0001Run, #0007Stop) to D1304. Please sir Describe this Correctly. God bless you!

[@samwicks4885]

sir please give me a correct answr for this.....i beg your pardon for desturbing

[@anhoangduc4626]

Hi, what purpose when you MOV #4 D1304? Thanks you

[@ATOcom]

This is the length of the read data, executed in the 03 command.

[@anhoangduc4626]

@@ATOcom Can you explain to me different between D1304 and D1302?

[@ATOcom]

@@anhoangduc4626 D1302 stores the data length of the 03 command. D1304 stores the length of the read data (read the length of the data returned from the VFD).

[@samwicks4885]

@@ATOcom what do you mean "D1302 stores the data length of the 03 command" we cant undersatnd "03 command"

[@samwicks4885]

@@ATOcom i think you mean "03command" for the Read command code.. but sir you put #0004 to the D1302 also,, it also transmission data length, you says D1304 as a Read data length, what is the different of D1302 and D1304? please explain this for all of the guys who commented below...

[@baranib1274]

how can i change the frequency value please share that address

[@ATOcom]

ATO VFD frequency setting address is 2001H, you can use 06 command write 2001H to D1303 ,write frequency to D1304....

[@baranib1274]

@@ATOcom THANKU

[@bendylee860]

Can i have your sample program?

[@ATOcom]

Sorry, I have not recorded my program. You can find it completely in the video.

[@akhilnavaneeth5517]

Can u send me the program backup pls

[@ATOcom]

Sorry, this program has been lost, but you can find it completely from the video.

[@robm3357]

Your to far from your monitor I can’t see the numbers

[@jimiiskandar4843]

sir you have wa? i want ask you? i am from indonesia

[@ATOcom]

Sorry, I don't have WA. You can ask here.

[@jimiiskandar4843]

Sir you have tutorial modbus tcp plc omron?

[@ATOcom]

​@@jimiiskandar4843 Sorry, we don't have a tutorial on modbus TCP at present, but we will do it in the future.

[@jimiiskandar4843]

Ok sir.