Error Response; Message Arguments; End Of Packet - Comtech EF Data LBC-4000 Installation And Operation Manual

LBC-4000 L-Band Up/Down Converter System
Remote Control
A.3.5 E R
RROR ESPONSE
If a converter cannot execute a Command or detects a protocol violation, an error
response is generated. An error is flagged by changing the "/" command designator in the
response to a "?". Following the "?" error symbol are two characters which are unique
error symbols useful for computer analysis. The two error symbols are followed by a text
string explaining the error for the convenience of a human operator. For this document,
ER is used for the generic case examples response.
Example:
A.3.6 M A
ESSAGE
Arguments are not required for all messages. Arguments are ASCII codes for the
characters 0 to 9 (ASCII 48 to 57), period (ASCII 46) and comma (ASCII 44).
A.3.7 E P
ND OF ACKET
Controller to Target: This is the 'Carriage Return' character (ASCII code 13).
Target to Controller: This is the two-character sequence 'Carriage Return', 'Line Feed'.
(ASCII code 13, and code 10.)
Both indicate the valid termination of a packet.
>DEV?COM ER Error Message 'cr''lf']
RGUMENTS
A-5
MN/LBC4000.IOM
Revision 2