dnp

[Fire118]

We are looking at monitoring substation breakers (SEL-351) as a part of our SCADA system.  These breakers use DNP 3.0 and we have never had them as a part of our Lookout SCADA process. What do we have to do to communicate with the breakers using Lookout 6.0 .  I am very new to SCADA and any help will be appreciated.

[Ryan.S]

If you are not familiar with Lookout, take a look at this tutorial first.

https://www.ni.com/docs/en-US/bundle/372595a/resource/372595a.pdf

It's about how to create server and client process, and how to use Modbus Object.

To use the DNP object, it's similar. Create the object, create connection on data members...

[Fire118]

Thanks for the input.  I still have one question.  I understand how to set up once comunication link has been established, i just don't know what equipment if any is to be used to attach the SEL-351 breaker to our DL-06 plc. The breaker has a serial port on the back and we have 12 individual breakers that will need to be monitored from this single location. We have fiber established at the substation, so do we go from serial to fiber using a converter to a piece of equipment such as a communication processor out to the plc using  serial or ethernet or what? The company that sold us the breakers have the equipment but they said they use a stand alone scada software system and we wanted to integrate the power into our already used SCADA system that is monitoring our Water, Gas & Sewer already.  Any help here is appreciated.

Thanks

Barry    

[Ryan.S]

From the breaker's manual, it supports DNP, Modbus, etc. So you can use Lookout to communicate with the breaker by DNP or Modbus protocol. I think the "stand alone scada software" is something like lookout. Actually no matter what kind of software it is, it should work as long as the software supports the protocol.

But I don't have the experience of this breaker, I don't know how to make the communication between PLC and breaker, or how to attach this breaker to plc.

[Fire118]

Thanks for all your help.  By the way is the serial com 2 on the front of the DL-06 for programming only or can we use it for communication such as a moddbus connection port. We are trying to test a piece of equipment that is not installed and we don't want to install it until we have tested the modbus driver on our testing bench. We have not used this piece of equipment using modbus and we have ordered a card for one the plc slots above but I was just wondering if we could use it while testing. 

Thanks

Barry       

[Ryan.S]

I find this page on Automation Direct website

http://support.automationdirect.com/faq/faq_group.php?product_id=45

Question: Does the DL06 support Modbus protocol?

Answer: The DL06 supports Modbus RTU, not MODBUS ASCII. Port 1 can be a Modbus slave, address 1 only. Port 2 can be a master or slave with user configurable address

I'm not sure of the steps you need to do before you make it work as Modbus Slave. If you cannot figure out how to configure the PLC for Modbus feature, you'd better contact PLC provider.
To use lookout or other software as Modbus master to communicate with modbus slave is straightforward.

[Fire118]

Thanks. That was the answer I needed. I appreciate all your help.

Barry