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PRESYS
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Instruments
The user may even select both password systems, by key and by value. In this
case, if upon receiving a request for a password the user enters a wrong key
sequence he will be immediately reverted to password by value.
The password may be a number selected by the user (customized), or the
number 2057. Note that in the case of password by value the number 2057 is always
enabled, serving as a help to the user in case he may not remember his password. In
order to enter a password number or any other parameter value use the front keys on
the Controllers which have the following functions:
UP
DOWN
ENTER
All configuration parameters and the control parameter computing values are
stored in the non-volatile memories (E2PROM and NVRAM) and determine the
instrument normal operation. Through configuration parameters the user may adapt
the instrument according to his requirements. Normally the DCY-2057 Controller is
factory configured and the user is not expected to enter the configuration mode.
The configuration parameters are distributed over nine increasing hierarchical
levels as shown in figure 12.
In order to go through those levels and to have access to their corresponding
parameters use the instrument front keys which have the following functions:
ENTER
UP
DOWN
DCY - 2057 Pressure Controller
Key
Key
Key
Key
Key
Key
Increases the digit
Decreases the digit
Moves to digit on the left
Switches into each level
Switches to a higher level
Switches to a lower level
Operation
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