Mitsubishi MC Write Node always writing True

General
1

I am able to write directly to a digital output on my Mitsubishi PLC, in my case Y6 and Y7 but when I try to write False to turn the output off it always says true and never turns the output off?

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image1164×860 33.3 KB

2

This is because a string of False is NOT false which is basically true. Change the drop-down to number and enter 0 or 1.

Better still, change it to msg.payload and pass the value in from the inject node.

As for returning true, that is to signify the value was received by the plc.

3

Thought I tried it every which way but apparently not.. got it working but for the Address dropdown I have it at string since there is not number option.

[
    {
        "id": "0e4c4e876be57fe0",
        "type": "MC Write",
        "z": "1edb34811118b980",
        "name": "Output Y6",
        "topic": "",
        "connection": "8bf9ce709d0bac70",
        "data": "payload",
        "address": "Y6",
        "addressType": "str",
        "dataType": "msg",
        "errorHandling": "throw",
        "outputs": 1,
        "x": 1080,
        "y": 1020,
        "wires": [
            [
                "d40f63709511ea3f"
            ]
        ]
    },
    {
        "id": "478c742ed3ad45e1",
        "type": "inject",
        "z": "1edb34811118b980",
        "name": "ON",
        "props": [
            {
                "p": "payload"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payload": "1",
        "payloadType": "num",
        "x": 870,
        "y": 1020,
        "wires": [
            [
                "0e4c4e876be57fe0"
            ]
        ]
    },
    {
        "id": "d40f63709511ea3f",
        "type": "debug",
        "z": "1edb34811118b980",
        "name": "",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
        "x": 1270,
        "y": 1020,
        "wires": []
    },
    {
        "id": "ca625bb2e78d2101",
        "type": "inject",
        "z": "1edb34811118b980",
        "name": "OFF",
        "props": [
            {
                "p": "payload"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payload": "0",
        "payloadType": "num",
        "x": 870,
        "y": 1100,
        "wires": [
            [
                "0e4c4e876be57fe0"
            ]
        ]
    },
    {
        "id": "56b584be43b166f3",
        "type": "MC Write",
        "z": "1edb34811118b980",
        "name": "Output Y7",
        "topic": "",
        "connection": "8bf9ce709d0bac70",
        "data": "payload",
        "address": "Y7",
        "addressType": "str",
        "dataType": "msg",
        "errorHandling": "throw",
        "outputs": 1,
        "x": 1080,
        "y": 1180,
        "wires": [
            [
                "9ba76175f1fea81d"
            ]
        ]
    },
    {
        "id": "7c1013dc01ca015e",
        "type": "inject",
        "z": "1edb34811118b980",
        "name": "ON",
        "props": [
            {
                "p": "payload"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payload": "1",
        "payloadType": "num",
        "x": 870,
        "y": 1180,
        "wires": [
            [
                "56b584be43b166f3"
            ]
        ]
    },
    {
        "id": "9ba76175f1fea81d",
        "type": "debug",
        "z": "1edb34811118b980",
        "name": "",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
        "x": 1270,
        "y": 1180,
        "wires": []
    },
    {
        "id": "c05b335492076ce5",
        "type": "inject",
        "z": "1edb34811118b980",
        "name": "OFF",
        "props": [
            {
                "p": "payload"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payload": "0",
        "payloadType": "num",
        "x": 870,
        "y": 1260,
        "wires": [
            [
                "56b584be43b166f3"
            ]
        ]
    },
    {
        "id": "8bf9ce709d0bac70",
        "type": "MC Protocol Connection",
        "name": "PLC1",
        "host": "192.168.1.15",
        "port": "3001",
        "protocol": "UDP",
        "frame": "3E",
        "plcType": "Q",
        "ascii": false,
        "PLCStation": "",
        "PCStation": "",
        "PLCModuleNo": "",
        "network": "",
        "octalInputOutput": false,
        "timeout": "1000"
    }
]
4

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