Control function configuration method, control device and control system

A control function configuration method comprising:

• receiving a control function message broadcasted by a primary control device through a narrow-band communication network;
• configuring a control function of a target secondary control device to be a target control function according to the control function message;
• and
• sending a function-configured notification message to the primary control device through the narrow-band communication network, the function-configured notification message indicating that the control function of the target secondary control device has been configured to be the target control function.

A control function configuration method comprising:

• receiving a function configuration request for a target secondary control device, the function configuration request including a target control function;
• determining whether a configured secondary control device with the target control function currently exists in the control system;
• in response to the configured secondary control device not currently existing in the control system, configuring a control function of the target secondary control device to be the target control function;
• and
• in response to the configured secondary control device currently existing in the control system, broadcasting, by the primary control device, the function configuration request in the control system through a narrow-band communication network to achieve function switching between the target secondary control device and the configured secondary control device.