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Re: [milo-dev] [Q] various PLC I/F <=> OPC-UA gateway system 
Sorry, I will correct it.

Various PLC I/F correspondence of LoopEdge does not seem to be
an OPC-UA gateway.

I had a misunderstanding.

LoopEdge seems to correspond directly to various PLC I/Fs, OPC-UA, etc.
When acquiring data from PLC equipment with LoopEdge, I think we do not
need to be conscious of OPC-UA directly.

On 2018/02/13 12:30, Shigeru Ishida wrote:

I was taught Litmus Automation's product called LoopEdge.

https://litmusautomation.com/loopedge/

This OPC-UA gateway seems to be part of the function of LoopEdge.
It is unknown whether it can be used alone. If using LoopEdge,
we do not need to be conscious of OPC-UA directly. In that sense,
it differs slightly from what we are looking for...

When opening the PLC tab of the following LoopEdge Drivers,
it corresponded to various PLC I/F and equipment.

http://litmusautomation.com/connectors/

On 2018/02/06 12:13, Shigeru Ishida wrote:

If you are interested about the appliance product,
for your information.

There is a product called Takebishi DeviceGateway (DGW).

https://www.faweb.net/us/devicegateway/index.html
[from: https://www.faweb.net/us/]

According to the following brochure,

https://www.faweb.net/us/devicegateway/pamphlet.pdf

It seems that it corresponds to many equipments.
We have not evaluated DGW yet.

By the way, the point that we place importance on evaluating
performance from the viewpoint of data collection is the following
in continuous operation for a long time.

1) Stability of data collection number
   Setting condition example)
     Sampling interval: 100 (msec)
     Publishing interval: 200 (msec)
     The data source changes at intervals of 50 (msec).

2) Stability of sampling interval
   Do not vary widely from the specified value.

Apart from DGW, We evaluated DeviceXPlorer OPC Server (DXP)
of Takebushi's Windows application server and used it.

https://www.faweb.net/us/opc/

DGW is not compatible with our customer's equipment, and
instead of DGW, DXP's 32bit version (not the 64bit version)
was the only choice.

As a result of evaluating 1) and 2) about DXP, it showed
unstable performance characteristics. Takebishi side also confirmed
this phenomenon and they are currently trying to fix it.

Under these circumstances, we are looking for other OPC-UA
gateway products that correspond to our customer's equipment.

On 2018/02/06 9:17, Shigeru Ishida wrote:

No problem. It is OK on Windows.

On 2018/02/06 9:09, Kevin Herron wrote:

Yes, Kepware is what we recommend to our customers when we don't have the driver ourselves.

Unfortunately Kepware is Windows-only.

On Mon, Feb 5, 2018 at 4:07 PM, Shigeru Ishida <ishida_shigeru@xxxxxxxxxxx> wrote:

    Thank you very much. Indeed, I am looking for products like KEPServerEX.

    According to the following URL,

    https://www.kepware.com/products/kepserverex/documents/options-for-kepserverex/

    It corresponds to a lot of equipment. So it will be helpful.

    On 2018/02/05 23:58, Kevin Herron wrote:

        If I understand your question correctly, something like this: https://www.kepware.com/en-us/products/kepserverex/

        On Mon, Feb 5, 2018 at 12:17 AM, Shigeru Ishida <ishida_shigeru@xxxxxxxxxxx> wrote:

             Hi all,

             Sorry for the topic not directly related to Milo.

             When using devices of various PLC I/F from OPC-UA client
             (eg system developed using Milo), I think that a gateway system
             to convert to various PLC I/F <=> OPC-UA is necessary.

             There are various PLC I/F such as Modbus and EtherNet/IP
             in factory facilities, but I am glad if it can be handled
             uniformly by OPC-UA without worrying about various PLC I/F.

             Therefore, it is helpful to tell me about URL and other information
             about the PLC I/F <=> OPC-UA gateway system. It can be either
             commercial product or OSS. (probably commercial products)

             If this topic is not suitable for this ML, I will withdraw this.

             Regards,

             --Shigeru
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