Node-RED Flow Examples

How to configure an eManager as a Modbus server?

Copy this flow and take it to Node-Red.

[
    {
        "id": "efba915cdfa25b76",
        "type": "tab",
        "label": "ModbusServer",
        "disabled": false,
        "info": ""
    },
    {
        "id": "0cdb5a255240f755",
        "type": "debug",
        "z": "efba915cdfa25b76",
        "name": "holding ",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "x": 960,
        "y": 120,
        "wires": []
    },
    {
        "id": "188d47735ef0f58c",
        "type": "debug",
        "z": "efba915cdfa25b76",
        "name": "coils ",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "x": 950,
        "y": 160,
        "wires": []
    },
    {
        "id": "0bd35eb4359baa5e",
        "type": "debug",
        "z": "efba915cdfa25b76",
        "name": "input ",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "x": 950,
        "y": 200,
        "wires": []
    },
    {
        "id": "57b89d91df1f2527",
        "type": "debug",
        "z": "efba915cdfa25b76",
        "name": "discrete inputs",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "x": 965.1166534423828,
        "y": 239.11669921875,
        "wires": []
    },
    {
        "id": "5fae09ab656f9b93",
        "type": "inject",
        "z": "efba915cdfa25b76",
        "name": "Start",
        "props": [
            {
                "p": "payload"
            },
            {
                "p": "topic",
                "vt": "str"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": "10",
        "topic": "",
        "payload": "",
        "payloadType": "date",
        "x": 130,
        "y": 180,
        "wires": [
            [
                "347f9549898a9ee3"
            ]
        ]
    },
    {
        "id": "347f9549898a9ee3",
        "type": "function",
        "z": "efba915cdfa25b76",
        "name": "Set Server Temperature Register",
        "func": "\n\nmsg.payload = { \n    'value': 56, \n    'register': 'holding', \n    'address': 100 ,\n    'disableMsgOutput' : 1\n} ;\n\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 380,
        "y": 180,
        "wires": [
            [
                "788794fffb6a16a7"
            ]
        ]
    },
    {
        "id": "788794fffb6a16a7",
        "type": "modbus-flex-server",
        "z": "efba915cdfa25b76",
        "name": "",
        "logEnabled": true,
        "serverAddress": "0.0.0.0",
        "serverPort": "11502",
        "responseDelay": 100,
        "unitId": 1,
        "delayUnit": "ms",
        "coilsBufferSize": 20000,
        "registersBufferSize": 20000,
        "minAddress": 0,
        "splitAddress": 10000,
        "funcGetCoil": "function getFlexCoil(addr, unitID) {\n\tif (unitID === node.unitId && \n\t\taddr >= node.minAddress && \n\t\taddr <= node.splitAddress) { \n\n\t\treturn node.coils.readUInt8(addr * node.bufferFactor) \n\t}  \n}",
        "funcGetDiscreteInput": "function getFlexDiscreteInput(addr, unitID) {\n\taddr += node.splitAddress\n\tif (unitID === node.unitId && \n\t\taddr >= node.splitAddress && \n\t\taddr <= node.splitAddress * 2) { \n\n\t\treturn node.coils.readUInt8(addr * node.bufferFactor) \n\t}  \n}",
        "funcGetInputRegister": "function getFlexInputRegister(addr, unitID) { \n\tif (unitID === node.unitId && \n\t\taddr >= node.minAddress && \n\t\taddr <= node.splitAddress) { \n\n\t\treturn node.registers.readUInt16BE(addr * node.bufferFactor)  \n\t} \n}",
        "funcGetHoldingRegister": "function getFlexHoldingRegsiter(addr, unitID) { \n\tnode.log('GEtting coil')\n\taddr += node.splitAddress\n\tif (unitID === node.unitId && \n\t\taddr >= node.splitAddress && \n\t\taddr <= node.splitAddress * 2) { \n\n\t\treturn node.registers.readUInt16BE(addr * node.bufferFactor)  \n\t} \n}",
        "funcSetCoil": "function setFlexCoil(addr, value, unitID) { \n\tif (unitID === node.unitId && \n\t\taddr >= node.minAddress && \n\t\taddr <= node.splitAddress) { \n\n\t\tnode.coils.writeUInt8(value, addr * node.bufferFactor)  \n\t} \n}",
        "funcSetRegister": "function setFlexRegister(addr, value, unitID) { \n\taddr += node.splitAddress\n\tif (unitID === node.unitId && \n\t\taddr >= node.splitAddress && \n\t\taddr <= node.splitAddress * 2) { \n\n\t\tnode.registers.writeUInt16BE(value, addr * node.bufferFactor)  \n\t} \n}",
        "showErrors": true,
        "x": 660,
        "y": 180,
        "wires": [
            [
                "0cdb5a255240f755"
            ],
            [
                "188d47735ef0f58c"
            ],
            [
                "0bd35eb4359baa5e"
            ],
            [
                "57b89d91df1f2527"
            ],
            []
        ]
    }
]