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2.5.2
Local and Remote Modes
Local Mode
When the Dionex ED50A is powered up, it is always in Local mode. In
Local mode, the detector accepts operating commands from two sources:
•
Direct input from the front panel keypad and screens. All operating
functions are available with direct input.
•
TTL inputs from a remote controller (for example, a Dionex gradient
pump module or an integrator). TTL signals can be used to offset the
recorder, run a method, turn the suppressor off and on, send a mark to
the recorder, and increase the recorder range.
Locked Remote Mode
The Dionex ED50A accepts remote operating commands, via the DX-
LAN interface, from a host computer. In Locked Remote mode, the front
panel keypad is disabled to prevent any changes to operating parameters.
When running Chromeleon 6.8, selecting the Connect check box on the
software control panel immediately selects the Locked Remote mode. To
return the Dionex ED50A to Local mode, either clear the Connect check
box or turn off the Dionex ED50A power.
2.5.3
Method Control
In Method control, commands are executed according to the time-based
steps specified in a method. Methods are created, edited, and saved on the
METHOD
Here is a summary of basic information about methods:
•
Each method can contain up to 32 separate time-based steps,
including the
•
Up to 100 methods (0 through 99) can be stored in Dionex ED50A
memory. Methods are retained in memory even after the power is
turned off.
The total number of methods that can be stored in memory depends
on the length of each method and the amount of available memory;
thus, the actual total may be less than 100.
Doc. 065551-01 6/13
screen. See Section 3.3 for details.
ial conditions and time zero (
INIT
2 • Description
) steps.
TIME = 0
2-15
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