Remote Control; Serial Interface - Magnet-physik EF 14 Operating Instructions Manual

Electronic Fluxmeter

6 Remote Control

6.1 Serial Interface

The EF 14 accepts 3 different kinds of commands:
Basic commands: These commands are understood by many measuring instruments. They start
with a star (*).
*COMMAND
Read commands: each read command starts with a question mark (?). Thereafter follows one
of the command texts that are described below. Some commands require additionally a
parameter. This must be separated from the command text by a blank.
?COMMAND
?COMMAND PARAMETER
Write commands: each write command starts with a (#). Thereafter follows one of the
command texts that are described below. Some commands require additionally one or more
parameters. The first parameter must be separated from the command text by a blank. If the
command requires a second parameter, this must be separated from the first parameter by a
comma.
#COMMAND
#COMMAND PARAMETER
#COMMAND PARAMETER, PARAMETER
The commands must be sent in capitals. The decimal separator for numbers must be a dot.
Each command must be terminated with a Carriage Return character (ASCII No. 13). This can
be don e.g. by appending chr$(13) in Basic or \n in C.
The EF 14 accepts also combinations of Carriage Return (ASCII No. 13) and Line Feed (ASCII
No. 10) as a valid termination of a command. In this case the line feed is simply ignored.
For nearly every command the EF 14 sends an answer after the command has been executed.
Although the EF 14 can store a few commands and execute them one after the other, it is good
practice to wait for the answer before the next command is sent. Each answer of the EF 14 ends
with a Carriage Return, followed by a Line Feed, as long as anything else is set using the TERM
command.
After switching on, the instrument is in Local mode, it can be operated from the keypad. As
soon as the EF 14 receives a write command, the keypad operation is restricted. To enable the
keypad again, the #LOCAL command has to be sent.
If the EF 14 receives a write command after a menu was manually accessed, the menu function
is aborted and the measuring operation is started before the command is executed. An exception
BA – no.: 100514EBA02
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December 9
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EF 14
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