CMU Error Messages 
1100.4903.12 9.1  E-4 
9 Error Messages 
SCPI Error Messages 
SCPI error messages are the same in all SCPI instruments. The errors are assigned negative numbers. 
The standard text of the error message is often supplemented by a comment from the CMU which 
provides more detailed information (device-dependent information). Since this part depends on the 
individual situation, it often contains more relevant information than the standard text. 
 
 
No error 
Error code  Explanation 
0 
No error 
This message is output when there are no entries in the error queue.  
 
 
 
Command error 
The following errors cause bit 5 in the ESR register to be set.  
 
Error code  Explanation 
-100 
Command error 
Generic error message that cannot detect a more specific error. 
-101 
Invalid character 
The command contains a character which is invalid for that type.  
-102 
Syntax error 
The data type received is not accepted at this position.   
-103 
Invalid separator 
The semicolon was omitted after a program message unit.  
-104 
Data type error 
The recognized data element is of the wrong type (e.g. character data instead of numeric data)  
-105 
GET not allowed 
A GET was received within a program message.  
-108 
Parameter not allowed 
The command contains parameters at a position where they are not accepted.  
-109 
Missing parameter 
The command does not contain the required parameters.