39
Remote Operation
7.3 Command Separators and conventions
• A colon (:) is used to separate a command keyword from a lower level
keyword.
• A blank space is used to separate a parameter from a command keyword.
• A comma (,) is used if a command requires more than one parameter.
• A semicolon (;) is used to combine multiple commands into one message
string. Commands from the same subsystem are permitted to skip repeating
the upper-level keyword.
Eg. “Route:Switch1 8; Switch2 5; Switch3 2”
• A colon is used when linking commands from different subsystems into one
message string, allowing a new upper-level keyword to be introduced. Since
the keyword is optional, such keyword could also be omitted (see example
2).
Only the first command requires the colon. Any subsequent commands of
the same subsystem do not require the colon (see example 3).
Ex. 1: “Route:Switch1 8; Switch2 5; Switch3 2; System:Error?”
Ex. 2: “Route:Switch1 8; Switch2 5; Switch3 2; :Error?”
Ex. 3: “Route:Switch1 8; Switch2 5; Switch3 2; :Error?; Timeout 2; status?”
• When linking multiple commands the maximum number of transmitted
commands to the matrix in one message string is 8.
• When reading responses from the matrix, the maximum number of
characters that can be received (read) is 100 characters.
• Commands related to the GPIB controller’s registers can NOT be
concatenated. These commands are *ESE, *ESE?, *ESR?, *STB?, *SRE,
*SRE?.
• All messages are in ASCII format (numeric values are represented in
decimal format with exception of the MAC address which is expressed in
hex format).
• Timing, sequences and action requirements are only shown where
applicable and are under the TIMING sub-paragraphs on each command
description.
• For RS232 and USB communication: Any string returned by the matrix is
terminated with a carriage return (0×0D) followed by a line feed (0×0A).
e.g. ”ROUT:SWIT2?\r\n”
will return
“1\r\n”
Where “\r” stands for carriage return (0×0D) and “\n” stands for line
feed (0×0A).
To Next Page
Loading...
Need help?
General
