▊輸入

▊輸出

▊功能

1. 定時刷新狀態(tài)

繼電器輸出節(jié)點會根據(jù)設置的時間，周期性的刷新當前的繼電器狀態(tài)。存儲在全局變量“DO_X”中，X為繼電器的通道號。

2. 全局變量

在函數(shù)計算如果需要獲取繼電器的當前狀態(tài)，可以使用以下語法獲取：

global.get("DO_1")
#注意1:流程內至少存在一個繼電器節(jié)點，才會使能繼電器的全局變量，才能讀取
#注意2:如果已經(jīng)初始化了全局變量，重啟網(wǎng)關才能刪除全局變量

全局變量可以很直觀的在右側全局變量窗口查看：

▊示例

控制繼電器&獲取繼電器狀態(tài)

[{"id":"2dafde0160e2ba6b","type":"do","z":"2ff624305b8cb30b","name":"","index":"1","interval":false,"intervalValue":1000,"x":410,"y":180,"wires":[["a603591f3e178be1"]]},{"id":"6992c0ad230b940b","type":"inject","z":"2ff624305b8cb30b","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"true","payloadType":"bool","x":230,"y":160,"wires":[["2dafde0160e2ba6b"]]},{"id":"a603591f3e178be1","type":"debug","z":"2ff624305b8cb30b","name":"調試 1","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":570,"y":180,"wires":[]},{"id":"149a0ab24f4c5d8c","type":"inject","z":"2ff624305b8cb30b","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"false","payloadType":"bool","x":230,"y":200,"wires":[["2dafde0160e2ba6b"]]},{"id":"1f3f938edf2e8c81","type":"function","z":"2ff624305b8cb30b","name":"函數(shù)計算 1","func":"msg.payload = global.get(\"DO_1\")\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":410,"y":300,"wires":[["6e804d72c4c1c473"]]},{"id":"b416ef03a7d8eb0d","type":"inject","z":"2ff624305b8cb30b","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":230,"y":300,"wires":[["1f3f938edf2e8c81"]]},{"id":"6e804d72c4c1c473","type":"debug","z":"2ff624305b8cb30b","name":"調試 2","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":570,"y":300,"wires":[]}]