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下面要給大家介紹的是如何使用海創(chuàng)-IIoT平臺(tái)快速的采集歐姆龍PLC的數(shù)據(jù)，我們使用的是CP1E-N20DR-A型號(hào)的PLC，采用HOSTLINK協(xié)議。

一.選擇產(chǎn)品
1、CP1E-N20DR-ACP1E

2、海創(chuàng)Box智能采集網(wǎng)關(guān)

3、串口服務(wù)器



二.設(shè)置PLC串口通訊
在歐姆龍PLC編程軟件CX-Programmer里面設(shè)置PLC的串口通訊的波特率、數(shù)據(jù)位、校驗(yàn)位、停止位、單元號(hào)和采集協(xié)議。



下圖為寄存器地址



三.采集數(shù)據(jù)
在桌面中打開海創(chuàng)-IIoT可視化編輯工具，進(jìn)入可視化編輯器。本次教程需要用到如下節(jié)點(diǎn)，在左側(cè)節(jié)點(diǎn)欄中拖拽出使用

1、’定時(shí)器周期性觸發(fā)輸入時(shí)間戳或者相應(yīng)的字符



2、HostLink歐姆龍HostLink采集協(xié)議



下圖為本案例HostLink歐姆龍控件的配置內(nèi)容



下圖為服務(wù)器配置內(nèi)容



3、調(diào)試用于調(diào)試節(jié)點(diǎn)輸出



把三個(gè)控件用線連接起來組成一個(gè)流，點(diǎn)擊部署最后的效果如下圖所示



四.代碼示例
以上教程可以通過拷貝下面代碼實(shí)現(xiàn)快速復(fù)用，在新建的流程中點(diǎn)擊界面右側(cè)菜單欄-導(dǎo)入-剪貼板，在文本框中粘貼下面代碼后點(diǎn)擊確定，即可快速復(fù)用

[
    {
        "id": "47bba1db.0ca98",
        "type": "inject",
        "z": "aac35e85.a1cec",
        "name": "",
        "topic": "",
        "payload": "",
        "payloadType": "date",
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "x": 235,
        "y": 240,
        "wires": [
            [
                "bb8b0e84.34dc9"
            ]
        ]
    },
    {
        "id": "bb8b0e84.34dc9",
        "type": "iot-hostlink",
        "z": "aac35e85.a1cec",
        "name": "",
        "server": "a9ca7528.fe2da8",
        "columns": [
            {
                "Key": "D0000",
                "Lable": "D區(qū)第0位",
                "Area": "D",
                "Address": "0000",
                "Number": "1",
                "ValueType": "Int16BE",
                "Arithmetic": ""
            },
            {
                "Key": "D0001",
                "Lable": "D區(qū)第1位",
                "Area": "D",
                "Address": "0001",
                "Number": "1",
                "ValueType": "UInt16BE",
                "Arithmetic": ""
            }
        ],
        "x": 350,
        "y": 240,
        "wires": [
            [
                "ec2ebc2f.77bd5"
            ]
        ]
    },
    {
        "id": "ec2ebc2f.77bd5",
        "type": "debug",
        "z": "aac35e85.a1cec",
        "name": "",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "x": 535,
        "y": 240,
        "wires": []
    },
    {
        "id": "a9ca7528.fe2da8",
        "type": "iot-hostlink-client",
        "z": "",
        "name": "",
        "communicate": "Serial",
        "host": "COM1",
        "post": "502",
        "baudrate": "115200",
        "databits": "7",
        "stopbits": "2",
        "parity": "Even",
        "expand": {
            "UnitId": "0"
        }
    }
]