User`s guide

4-21
Operation 4
At the end of a run in Program mode, the Solvent
Consumption can be obtained by selecting the
appropriate roll screen.
The 305 controls up to two other elution pumps
and one injection pump through the GSIOC cable.
Other instruments such as auto-samplers and
fraction collectors can be connected to the 305
Master pump using the Input/Output contacts on
the rear panel of the 305.
Before creating a method program in the 305
Master pump, it is necessary to understand how
the method programs are stored in memory.
Memory Layout
There are 14 files, numbered 1 to 14. Each file can
store 1 program. Files 1 to 10 are user files, avail-
able for method programs. Files 11 to 14 are re-
served for safety/error programs.
A file contains timed events. A timed event is a
flow rate, a solvent composition, the operation of
an input or output or the operation of an injection
pump. One file stores a maximum of 25 timed
events which can make up the method program.
The Safety Files, 11 to 14, do not contain pre-stored
programs you can write each Safety File according
to your own requirements, for example, to output a
control signal to an external device. Write each
safety program in the same way as a method
program. This allows you to program the sequence
of events that will happen when an error occurs. If
an error occurs during a run, the method program
stops and the relevant safety program starts. If no
safety program has been written, the default opera-
tion in the event of an error is described in each
relevant Safety File description. See pages 4-31 to
4-33 for the exact operation of Safety Files.
Mode Selection