Відео

Great, let us know your questions.

You've raised a good point. The historic data is one of the DNP3 feature as an industrial communication protocol. It mitigates the risk of comms failure by storing events in the outstation controller and upload the event data the SCADA server (DNP master). Depending on the server software, for example, GeoSCADA (ClearSCADA) can be configured to ignore the historic events passed a certain period. However, most of the application servers are configured to accept the events to avoid loss of data. We share another video with you: ua-cam.com/video/SmRI4H1LqsQ/v-deo.html

Cool, thanks

MPPT cannot provide a higher amperage than what the solar panel is capable of. However, it can optimize the efficiency of the panel's output

@@acectrl What I wanted to say was whether it could actually increase the amperage by reducing the voltage. For example, while a solar panel that provides 15 volts and 7 amps is charging a 12 volt battery, the mppt device can output 14 volts and more than 7 amps. In this case, the 7 amperes coming from the panel are increased.

@@acectrlyou say the opposite at 0:44

Modbus is still widely used in plant/site automation where time-stamped data are mandated by the end users. For example, a manufacturing facility.

So nice of you

It can be for anyone.

Good points

Is that a DNP internal register? If so, you need to check if the register is readable or writable.

@@acectrl No it's just modbus. I tried to write 1 to the address 1612 (normally open contact) but nothing happens. I tried to write 1 to the actual physical output (register 7) on SCADAPACK. The ouput energized but very quickly turn it self off! Not sure if there's something need to be checked on the program. Thanks.

😂 still need help? The 501 is a really old relay and someone could have spent a few extra hundred dollars and got a relay with more features. I've been programming RTACs for 15yrs.

@beans4gas too late. Also, the project was a success. 15-year experience that's impressive. Do you mind if I ask what your role is? I want to learn more about relay and industrial networking in secondary devices. I would really like to have guidance from professionals such as yourself.

Thanks for your question. It depends on the control system software and hardware you are using. E.g. with ABB RTU560, the timeout and retries setting are found in Network Tree and communication line. For Schneider SCADAPack RTU, the settings are in DNP3 tab etc.

Thank you for your comment!

Hello Sieros, thank you for your question. There are indeed software to convert Modbus signals to DNP. However the software modules needs to be deployed on a computer (preferrable an industrial PC) with serial ports if the Modbus or DNP communicate in RS232 or RS485. For example, ABB MicroSCADA COM500 or COM581 is one the software. The cost of such module usually outweights the price of a hardware module. Hence, hardware would be our recommendation unless the amount of I/Os are significant.

Hello Sikiran, thank you for your comment. We are creating a new video to explain time stamp in DNP3. Please keep an eye out.

SCADAPack RTU575 and Honeywell ControlEdge RTU

Hi Douglas, thank you for your question. Depending on the type of I/Os you try to force in the Logic, in general, all physical I/Os can be forced in the logic. Some bus I/Os (incoming) can not be forced. At least not in a straight forward way.

@@acectrl Thank you for the feedback! I did more tests using different variables and I noticed this behaviour regarding force. Other question: How do you do to upload the x70 logic from a device? I did tests using the read project and the Read functions and in both cases I just got the config from Remote Connect... I would like to get the logic from this device. Like an upload function from most PLCs.

The Logic can be uploaded via the Logic Editor

Thanks for watching!

Thanks Samuel for your feedback. Best of luck to your internship and please keep following us.

Thanks, Mohamed, for your comment. It depends on what industry you are from. The client and server terminologies are commonly used in IEC 61850 world. Master and slave is still popular for DNP and Modbus as far as in Australia.

@@acectrl No sir. In IEC 61850 you have Goose which is relay to relay communication where you can publish data or subscribe to it. So you can't talk about client/server thats wrong, MMS in the other hand yes as the relay can send a buffered or unbuffered report to a client. It has nothing to do where we are from. How many times you hear Master Slave outside of the tech world? That should give you an idea that the use is not appropriate.

​ @Mohamed Moussamir, we acknowlege and really appreciate your comment on IEC 61850. However this video is about DNP3 and Modbus where Master and Slave terminologies are very commonly used in engineering. For your interest, a web link (below) provides further information: www.dnp.org/About/Overview-of-DNP3-Protocol

@@acectrl Client/Server are the correct terms as specified by the Modbus Organisation as of 2020.

The answer is yes. Suggest looking into DNP3 Secure Authentication. Any further questions you may have, please let us know.

Glad it was helpful!

Thanks Azam for your positive feedback! Your support to our channel is appreciated!

Hi Muhriddin, thank for your question. We are Honeywell system integrator.

Thanks you for your response and how can i apply for job in Honeywell as I'm doing my master degree in Tashkent specialised on Automation of technical processes and manufacturing

Thank you for your enquiry. Unfortuately we don't have such demo license.

Hi Vanilla, thank you for your questions. We have used SCADAPack 330 in the past. Do you require any assistance?

Hello Osama, thank you for your question. You're right that the SCADAPack 575RTU has the DNP3 master function i.e. data concentrator. However, we find that using read & write logic (in Remote Connect) gives more flexiblity when it comes to error detection for each individual peer to peer data point. Once again, you raised a good question. Your feedback is always welcomed.

Thank you for your comments!

Thanks Yogesh, for your comments on our videos. I am glad you find them useful. Your continued support will be very much appreciated. Merry Christmas and Happy New Year!

Thanks Đặng Trang for your comments on the videos. Glad that you like them!

Thank you!