Technical data

178 Understanding Your Agilent ChemStation

8 Automation

Postsequence Operation

You can specify what happens after a sequence has finished during normal

execution or when the ChemStation encounters an error during sequence

operation. For LC operation, this is done by activating the post-sequence

Cmd/Macro check box of the Sequence Parameters where you have a choice of:

• Setting the system to a STANDBY state where the pump and lamp are off,

• setting the system to a LAMPOFF state where all lamps are off (LC and CE

only),

• Setting the system to a PUMPOFF state where all pumps are off (LC and CE

only), or

• Using a default SHUTDOWN macro or modifying SHUTDOWN.MAC to

determine specific operation.

For example, you may want to switch off your system after your sequence

has completed. Other uses of the shutdown macro could be to set your flow

to zero or slowly reduce your flow.

In the Sequence Parameters, you may specify any custom macro to run by

including its name in the Post-Sequence Cmd/Macro field and checking the

box.

Not Ready Timeout (LC and CE only)

The Not Ready Timeout in the Sequence Parameters is the length of time the

system will wait for the instrument to become ready — after this time the

system will shut down.

Wait Time (LC and CE only)

Sequence Parameters allows you to specify a wait time which is executed after

loading method and before injecting with that method. This can be useful for

column/capillary re-equilibration when using new analysis conditions.