The error codes are defined the following part the document.
If the message correct but there are errors (wrong functional code data) can’t accepted, so
the slave answers with error message.4 Error management
If the received message incorrect (CRC16 wrong) the polled slave doesn’t answer.
2.
.3 Description CRC calculation
The following example the CRC calculation language.SCHRACK TECHNIK GMBH 4
2
