最近研究一个设备需要给它 逐条循环 发送代码，逐条发送已经用 split 节点实现了。然后后面想用 loop节点（node-red-contrib-loop） 来时代码循环发送，没想到出发循环之后无法停止，不知道哪里错了，求高人指点，真心拜谢！！本人不懂代码，研究了好久都没解决，特来求教。
前面的部分去掉了，只循环一个字符消息。
不知道这样连接是否正确，我试过其他连接方式都没有循环输出。
loop节点也没有设置，就是默认的。
按照说明文档，当有 break 命令注入时 就会停止，我试过好几种写法仍然无法停止。
注入的break 也进入了循环
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请教如何控制loop，或者有没有其他可以控制 开始、暂停的循环方式？