opc

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hello, if i want to get opcitem discribe and datatype info v := ole.NewVariant(ole.VT_R4, 0) q := ole.NewVariant(ole.VT_INT, 0) ts := ole.NewVariant(ole.VT_DATE, 0) how i should add the ole VT...

pfx546746447

hi, i use this in win10 1. first install graybox sm 2. install auto wrap and register 3. connect to opc ser but has a connect error: panic: TryConnect was...

Liangzx

How to deal with concurrent reading of tags

1

Now for one opc server, we only can read the tags one by one, If one of the tags cannot be read, the delay will increase. Did you ever try...

XiaodongFeng

Subscribe example

3

Hello, I have successfully browsed server for tags, and read their content. Great software and guidelines provided - thanks for that. I am required to subscribe to be notified when...

axlev

Reading OPC data from device

1

from [connection.go ](https://github.com/konimarti/opc/blob/ff6d352d2e3df5f2c2358d46ac72a99cffa55df2/connection.go) ``` //OPCDataSource defines constants for Sources when reading data from OPC: //Default implementation is OPCCache. //From the cache OPCCache int32 = 1 //From the device OPCDevice int32...

emilesalem

Higher versions of Golang will crash

4

At that time, I was using a higher version of Golang (Version>=1.14)，when this method is executed, an error will be reported and the program will crash. **`D:\go\pkg\mod\github.com\go-ole\[email protected]\oleutil\oleutil.go`** func CallMethod(disp *ole.IDispatch,...

eddielth

i see the file have a build tag ```go // +build windows ```

ali-pay

你好，我本地有两台opc模拟仿真服务器，分别是：Kepware.KEPServerEX.V6和Matrikon.OPC.Simulation.1，但是我通过“opc-cli.exe list localhost”命令只能扫描到Kepware.KEPServerEX.V6，扫描不到Matrikon.OPC.Simulation.1，但是通过第三方客户端（opcclient）两台都可以扫描到。 有空请看一下，谢谢

weizi-era

tag name have "/" like: ES11_ES::211SG1/GROUP.#StatusPermanent execute /tag/ES11_ES%3A%3A211SG1%2FM1.CNT2_OS will result "404 page not found"

renci-zz

Hello, I have two opc simulation servers locally, namely: Kepware.KEPServerEX.V6 and Matrikon.OPC.Simulation.1, but I can only get Kepware.KEPServerEX.V6 with the "opc-cli.exe list localhost" command, Matrikon.OPC.Simulation.1 cannot be obtained, and both...

weizi-era