21: Checksum after data block write is invalid

Info:
Data type:

Description:
Response error in BsLoader mode during the data block download of an NC system module ('acp10sys.br' or 'acp10bsl.br'). The checksum of the NC system module (BR module) is invalid.

Reaction:
See error number 25.

Cause/Remedy:
See error number 32018.
See error number 1012.