Screen Security Levels - Emerson Vilter Vission 20/20 Operation And Service Manual

Section 22 • User Access
Verify New Password:
• The operator will re-enter the password by touching
the entry box and typing the password via the pop-
up keyboard.
Update:
• Pressing this button will initiate the modifi cation of
the VNC account.
Change VNC Port Number
Port Number:
• The operator will change the port number for VNC
server by touching the entry box and typing via the
pop-up keyboard. Default port number is 5900.
Operator can assign port number ranging between
5900 to 6000.
Page
Event List
Input/Output States
Trend Chart
Help
Alarms & Trips
Compressor Scheduling
Compressor Sequencing
Condenser Control
Compressor Control
Maintenance
Data Backup
Instrument Calibration
Service Option
Confi guration
Slide Calibration
Timers
VNC Account
22 – 4
Update:
• Pressing this button will initiate the modifi cation of

Screen Security Levels

The following table lists all screen and their base securi-
ty levels, see Table 22-1. Security Access Levels. The ma-
jority of the screens have more than one security level.
The base security level gives the user access to the set-
points that can change to performance of the compres-
sor. The secondary security 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
User Level
Level 0
Level 0
Level 0
Level 0
Level 1*
Level 1
Level 1
Level 1*
Level 1*
Level 1
Level 1*
Level 2
Level 2
Level 2*
Level 2
Level 2*
Level 3
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9
the specifi ed VNC account Port number.
Level 3 required for constraints
Level 3 required for constraints
Level 3 required for constraints
Level 3 required to upload data
Level 3 required for pages 3 - 6
Level 3 required for constraints
*Note
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