**Mandatory.** Must be implemented by all level I devices.

Read a register from a node. 

*If a node have several pages with user defined registers Extended Register Read is a better choice to choose for reading as the page also is set when reading register using that type. The standard registers can always be read without setting a page though as they are always mapped into the upper 128 bytes.*

 | Data byte | Description | 
 | :---------: | ----------- | 
 | 0 | Node address. | 
 | 1 | Register to read. | 

A read/write response event is returned on success.

The following format can be used for nodes on a Level II segment as a midway between a full Level II handling as specified in Class=1024 and Level I.

 | Data byte | Description | 
 | :---------: | ----------- | 
 | 0-15 | GUID (MSB -> LSB) for interface. | 
 | 16 | Node id for node to read | 
 | 17 | Register to read. | 
