Omron E5CN-H Communications Manual page 28

2.1 Data Format
Example 4) No Sub-address and Illegal BCC
Command
BCC
Node number
STX EXT Err
Response
BCC
Node number Sub-address End code
STX 0 0 1 3 EXT
The sub-address is "00" and the end code is "13" (BCC error).
2-5