PRAXSYM DB-12, User Manual, Page: 20 / 24

3.3 Error Responses
Invalid commands will be acknowledged with an error
response. An error response will consist of 4 ASCII bytes
followed by a carriage return. The error code consists of the
two characters ER followed by a two-character error status
code.
ERIC<CR> Invalid command
The command was not recognized because it was not in the
proper format.
ERIN<CR> Invalid number or range
The data included in the previous command was invalid or out-
of-range.