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RS-232 Programmer’s Reference Ultra-Cool
46 Rev 008, 01/12
© SP Scientific 2012
RS-232 Error Codes
The following error codes are returned “E # # #” if the parser/syntaxer/limits-checking
software finds fault with the received string.
Group 0: UART Transmit/Receive and General Receive errors.
E001 UART Overrun.

Character received by UART before previous character has been retrieved
from the character input buffer. Microprocessor hardware failure.
E002 Parity Error.

Character detected has incorrect parity as defined by control-panel
programming. See PARITY?
E003 Frame Error.

Incorrect number of Stop Bits detected on received character. See
STOPBITS?
E004 Break Error.

UART detects loss of RS-232 line with host. This error is only reported if such
a break occurs after the receipt of valid data, and before receipt of a <CR>
(carriage return). Line break is otherwise ignored.
E005 Line Too Long.

Received "line" (character string) exceeds 128 characters without receipt of
<CR> (carriage return).
E006 Receive Buffer Overrun.

1KB character input buffer is full. Commands are being received faster than
they can be processed.
E007 Line Buffer Overrun.

Lines are being received faster than they can be processed.
E008 Break Error.

See E004.
Group 1 Errors: General Parsing and Transmission Errors
E010 Transmit Buffer Overflow.

Requests for information (queries) result in information being buffered faster
than it can be transmitted to the host (Baud-Rate dependent). 1KB buffer
exceeded.
E011 Parse Buffer Overflow.

Too many commands (>32) on a single line.