om.serotonin.messaging.WaitingRoomException: No recipient was found waiting for response for key com

com.serotonin.messaging.WaitingRoomException: No recipient was found waiting for response for key com.serotonin.modbus4j.serial.SerialWaitingRoomKey@43f
	at com.serotonin.messaging.WaitingRoom.response(WaitingRoom.java:69)
	at com.serotonin.messaging.MessageControl.data(MessageControl.java:153)
	at com.serotonin.messaging.InputStreamListener.run(InputStreamListener.java:76)
	at java.lang.Thread.run(Thread.java:744)

Modbus RTU 只能master to slave 主动发起,然后slave给响应,slave无法在没有收到master请求的时候主动发送消息到master

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