User Documentation

Communications

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Control code (C)

D7 D6 D5 D4 D3 D2 D1 D0

Transmission

direction

Slave response flag

Subsequent frame

flag

Function code

Item Contents

Transmission direction (D7) 0 Command frame from Master

1 Response frame from Slave

Slave response flag (D6) 0 Slave response is correct.

1 Slave response is wrong.

Subsequent frame flag (D5) 0 No subsequent data

1 With subsequent data

Function code (D4 to D0) 00000 Unassigned

01000 Not supported

10001 Read out data

10010 Not supported

10011 Read out transmission address (device number)

10100 Write data

10101 Write transmission address (device number)

10110 Not supported

10111 Change transmission speed

11000 Change password

11001 Not supported

11010 Reset integral power

11011 Not supported

Data field length (L)

◊ Is the byte count of data field.

◊ Read: L ≤ 200, Write: L ≤ 50, L = 0 means no data field.