22 – 3
Section 22
•
User Access
Vission 20/20 • Operation and Service Manual • Emerson • 35391SC 2.7
from this list will add that name to the “Operator
Name” entry box.
Operator Name:
• This entry box is for the operator’s username who is
to be added, removed or modified. The operator can
either select the username from the operators win-
dow or enter the username manually by touching
the entry box and entering the name via the pop-up
keyboard.
Operator Password:
• This entry box is for the operator’s password. The
password can be entered by touching the password
entry box and entering the password via the pop-up
keyboard.
Verify Password:
• This entry box is to verify the operator’s password.
Verifying the password can be entered by touching
the “Verify Password” entry box and entering the
password via the pop-up keyboard.
Security Level:
• Select a security level for the account being added or
modified. Only levels that are equal to or less than the
operator’s own security level will be shown.
Add / Update:
• Pressing this button will initiate the creation or modi-
fication of the specified account.
Delete:
•
Pressing this button will delete the specified account.
Screen Security Levels
The following table lists all screen and their base security
levels, see Table 22-1. The majority of the screens have
more than one security level. The base security level
gives the user access to the setpoints that can change
to performance of the compressor. The secondary se-
curity level is typically level 3 and is reserved for those
setpoints that require great care and knowledge of the
system in order to change safely.
Table 22-1. Security Access Levels
Security Access Levels
Page
User Level
*Note
Event List
Level 0
View
Input/Output States
Level 0
View/create freeze screen
Trend Chart
Level 0
View/operate
Help
Level 0
-
Alarms & Trips
Level 1*
Level 3 required for constraints
Compressor Scheduling
Level 1
-
Compressor Sequencing
Level 1
Setpoints can be modified / set at
Level 1
Condenser Control
Level 1*
Level 3 required for constraints
Setpoints can be modified / set at
Level 1
Compressor Control
Level 1*
Level 3 required for constraints
Maintenance
Level 1
-
Data Backup
Level 1*
Level 3 required to upload data
Instrument Calibration
Level 2
-
Service Option
Level 2
-
Configuration
Level 2*
Level 3 required for pages 3 - 6
Slide Calibration
Level 2
-
Set Language
Level 2
Timers
Level 2*
Level 3 required for constraints
Moving Volume Slide
Level 3
VNC Account
Level 3
-
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