Chroma 66203 - 5.6 Traversal of the Command Tree

Digital Power Meter 66203/66204 User’s Manual
5-6
Query: FILT?;:COMP:LIM:V?;:COMP? Response: ON ; 220.0 , 50.0 ; OFF
Response Message Unit Separator ( ; ):
The separator (semicolon ;) separates the response message unit elements from one
another in a response message.
Example: ON ; AUTO ; 110.01
Response Data Unit:
Example: ON or AUTO or 110.01 or 220.0 or VPK+
Response Data Unit Separator:
The separator separates the response data unit elements from one another in a response
message unit. Three permitted separators are:
When sets the SYSTem:TRANsmit:SEParator as 0 :
(1) ( , ) : Comma.
When sets the SYSTem:TRANsmit:SEParator as 1 :
(2) ( ; ) : Semicolon.
Example:
When querying FETCH? it will response
<NR2>,<NR2>,<NR2>,<NR2>,<NR2>,<NR2>,<NR2>,<NR2>,... or
<NR2>;<NR2>;<NR2>;<NR2>;<NR2>;<NR2>;<NR2>;<NR2>;...
When querying COMP:ITEM? it will response V , I , W , PF ,... or V ; I ; W ; PF ;...
Response Message Terminator (<RMT>)
:
A response message terminator represents the end of a response message. Three permitted
terminators are:
When sets the SYSTem:TRANsmit:TERMinator as 0 :
(1) LF( i.e.: NL, new line) : line feed which is a single ASCII-encoded byte 0A (10
decimals).
(2) LF+EOI : line feed with end or identify (EOI).
When sets the SYSTem:TRANsmit:TERMinator as 1 :
(3) CR+LF : cursor return and line feed which are a single ASCII-encoded byte 0D
(13 decimals) and a single ASCII-encoded byte 0A (10 decimals).
(4) CR+LF+EOI : cursor return and line feed with end or identify (EOI).
5.6 Traversal of the Command Tree
Multiple program message unit elements can be sent in a program message. The first
command is always referred to the root node. Subsequent commands are referred to the
same tree level as the previous command in a program message. A colon preceding a
program message unit changes the header path to the root level.
Example: