Yokogawa YVP20S - Manual (Page 27)

4-6
<Toc> <Ind> <4. ValveNavi ADMINISTRATION>
IM 21B04C50-01E
The program already contains two accounts.
• The first account is the administrator account, which you are using, with the logon
name “Admin” (note that this is case sensitive with a capital A) and the initial password
is blank (no password). Immediately use the administration program to install a
password for administration to make the system secure from unauthorized use.
• The second account enables use of the YVP process controller simulator with the
logon name of “training” (lower case) and password of “training” (lower case). The
process control simulator will simulate, in software, a process with a dead time of one
second and a lag of five seconds. The process controller simulator is useful for
training users on the many functions and features of the YVP positioner and its PID
function block.
WARNING
Do not logon with a “training” account to use ValveNavi with a valve that is not isolated from
the operating process. Control links will be destroyed by using the simulate function.
CAUTION
It is important that the administrator change the default logon names and passwords for the
administrator account and the training account. Continued use of the default logon account
names and passwords makes the system less secure.
4.6.3 Privilege Levels
Each user is assigned an account. For each account, there is an associated privilege level.
Privilege levels range from 0 to 9, with level 0 the lowest and 9 the highest. The following
defines several privilege levels, which control access to specific functions of the ValveNavi
program. Services which are not accessible to a particular level are “grayed” out.
Level 0
Allows the user to logon to ValveNavi only if the connected YVP is in Auto. The user can
send commands that will reply with configuration, calibration, and status information, but
the user cannot change any information. Level 0 users cannot go to Out Of Service or
Manual.
Level 1
Allows the user access Auto, Manual or Out Of Service states. The user can transfer from
one mode or state to another (i.e. the user can take the YVP out of Auto and put it in
Manual). The user can then set valve position. However, the user cannot change the
calibration or configuration. The level 1 user cannot access the PID dialog.
Level 2
This level is not defined.
Level 3
Allows the user to change the configuration or calibration values, but does not allow the
user to perform calibration and tuning operations that stroke the valve (Find Stops,
Autotune or diagnostics).
The user may open the PID dialog and use it to change PID modes and to move the valve
in manual or change process variable setpoint. The user can enter tuning parameters for
the process variable PID control.