Node-RED教程 – 06 – Modbus从站的建立

[ { "id": "7ea431a85cd0a67d", "type": "modbus-write", "z": "ca333be98589a7f1", "name": "", "showStatusActivities": false, "showErrors": false, "showWarnings": true, "unitid": "1", "dataType": "HoldingRegister", "adr": "15", "quantity": "1", "server": "81c43f9deab821c9", "emptyMsgOnFail": false, "keepMsgProperties": false, "delayOnStart": false, "startDelayTime": "", "x": 520, "y": 260, "wires": [ [], [] ] }, { "id": "bf0a194886b0b4b0", "type": "inject", "z": "ca333be98589a7f1", "name": "", "props": [ { "p": "payload" }, { "p": "topic", "vt": "str" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "514", "payloadType": "num", "x": 290, "y": 260, "wires": [ [ "7ea431a85cd0a67d" ] ] }, { "id": "81c43f9deab821c9", "type": "modbus-client", "name": "", "clienttype": "tcp", "bufferCommands": true, "stateLogEnabled": false, "queueLogEnabled": false, "failureLogEnabled": true, "tcpHost": "127.0.0.1", "tcpPort": "502", "tcpType": "DEFAULT", "serialPort": "/dev/ttyUSB", "serialType": "RTU-BUFFERD", "serialBaudrate": "9600", "serialDatabits": "8", "serialStopbits": "1", "serialParity": "none", "serialConnectionDelay": "100", "serialAsciiResponseStartDelimiter": "0x3A", "unit_id": "1", "commandDelay": "1", "clientTimeout": "1000", "reconnectOnTimeout": true, "reconnectTimeout": "2000", "parallelUnitIdsAllowed": true, "showWarnings": true, "showLogs": true } ]