User Manual – Rev BE    AMETEK Programmable Power 
MX Series  318 
10.  Error Messages 
Any errors that occur during operation from either the front panel or the 
remote-control interface will result in error messages. Error messages are 
displayed in the upper left-hand corner of the LCD display. They are also stored 
in the error message queue from which they can be queried using the 
SYST:ERR? Query. The error queue has a finite depth. If more error messages 
are generated than can be held in the queue, a queue overflow message will be 
put in the last queue location. To empty the queue, use the error query until the 
No Error result is received. 
Errors appearing on the LCD will generally remain visible until the user moves to 
another screen. If multiple error messages are generated in succession, only the 
last message will be visible as there is only space for one error message on the 
LCD display. 
The same area of the display is also used to display status messages. While 
error messages always have a negative error number, status messages have a 
positive number.  
The table below displays a list of possible error and status messages along with 
their possible cause and remedy.  
0 
"No error"   No errors in queue 
 
-100 
"Command error"  Unable to complete requested operation  Unit may be in a mode inconsistent with request. 
-102 
"Syn t a x er r or "  Command syntax incorrect.  Misspelled or unsupported command 
-103 
"Invalid separator"  SCPI separator not recognized  See SCPI section of programming manual. 
-104 
"Data type error"   Data type invalid.  Check command for supported data types 
-108 
"Parameter not allowed"  
One or more additional parameters were 
received. 
Check programming manual for correct number 
of parameters 
-109 
"Missing parameter"  
Too few parameters received for 
requested operation 
Check programming manual for correct number 
of parameters 
-110 
"Command header error"  Command header incorrect  Check syntax of command. 
-111 
"header separator error"   Invalid command separator used.  Us e  semi-colon to separate command headers 
-112 
"Program mnemonic too long"   Syn t a x e r r or  
Check programming manual for correct 
command syntax 
-113 
"Undefined header"   Command not recognized error 
Check programming manual for correct 
command syntax 
-120 
"Numeric data error"   Data received is not a number 
Check programming manual for correct 
command syntax 
-121 
"Invalid character in number"  
Number received contains non-numeric 
character(s) 
Check programming manual for correct 
command syntax 
-123 
"Exp o n e nt too lar ge"   Exponent in number exceeds limits 
Check programming manual for correct 
parameter range 
-128 
"Numeric data not allowed"  
Number received when number is not 
allowed. 
Check programming manual for correct 
command syntax 
-168 
"Block data not allowed"   Block data was sent. 
Check programming manual for correct 
command syntax 
-200 
"Execution error"   Command could not be executed 
Command may be inconsistent with mode of