node-red-contrib-opcda-client-dynamic
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Node-RED OPC DA dynamic Reading and Writing Node
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# node-red-contrib-opcda-client
This node can be used in order to read and write to OPC DA servers.
This node is based on emrebekar/node-red-contrib-opcda-client, modified opcda-read.js.
- only valid tags is read for opcda-read when msg.payload tags is vaild.
msg.payload = {
tags: ["dev1.wendu","dev1.yali"]
};
- for normal read( no payload tags ), only value changed tags will ouput when data change is checked. For example,devl.wendu and devl.yali were set,only devl.wendu value changed, opcda-read will only output devl .wendu
- for dynamic read ( payload tags valid ), data change check is useless , all payload tags will output.
- opcda-server
- opcda-read
- opcda-write
## Input Parameters
### opcda-server
#### Name (Optional)
Name of the OPC DA Server to be shown in node.
#### Address
Address of the OPC DA Server
#### Domain(Optional)
Domain of account if necessary.
#### Username(Optional)
Username of account if necessary.
#### Password(Optional)
Password of account if necessary.
#### ClsId
Class ID of the OPC DA Server.
#### Timeout(Optional)
Timeout of server connection.
### opcda-read
#### Server
OPC DA server which is wanted to connect.
#### Group Name(Optional)
Node name to be shown in node-red.
#### Cache Read (Optinal)
Check if wanted to read tags from cache.
#### Data Change (Optional)
Check if wanted to output msg.payload when value of tag changes.
#### OPC DA Tags
Add OPC DA tags wanted to read.
### opcda-write
#### Server
OPC DA server which is wanted to connect.
#### Name (Optional)
Node name to be shown in node-red.
#### Usage
set msg.payload parameter with the following;
```
[
{"itemID":"<ItemID want to set>","type":"<type of the value>","value": <value want to set>},
.
.
.
]
```
###### Accepted Data Types
- double
- short
- integer
- float
- byte
- long
- boolean
- uuid
- string
- char
- date
- currency
- array
#### Screenshots
##### opcda-server
##### opcda-read
##### opcda-write
