General Commands for Device Control
General Commands

Independent from the installed instruments, Chromeleon supports the following general commands (under the device commands):

 

Command

Description

Branch

Completes the active Program and starts another one

Delay

Especially with trigger commands, execution of the next program command is delayed for the specified time.

EndTrigger

Continues all processes in hold mode.

End

Starts or stops data acquisition.

If

ElseIf

Else

EndIf

Control flow for conditionally executing a group of statements.

The IF structure allows you to execute a command only if a certain condition is true. If the IF condition is true, the statements enclosed between IF and ENDIF are executed. Otherwise, they are ignored. By using ELSEIF, it is possible to combine several conditions. The statements of the final ELSE will be executed if none of the ELSEIF conditions is true either.

Log

Logs device variable values in the Audit Trail (see Data Management  Audit Trails).

Message

Displays a message to the user and interrupts the program until the message is clicked.

Protocol

Logs any message in the Audit Trail

Trigger

Freezes a running gradient program, stops data acquisition, stops sample processing.

Wait

Interrupts the program until a certain condition is fulfilled.