LINK Systems OmniLink 5000 - Manual (Page 11)

April 17, 2000 Man ual Revisio n 1.0
2.3
Section 2.2 Access Control
The OmniLink control has several parameters or operations that have limited access. In regards to the
tonnage monitor the ability to perform actions of turning bypass off and on, resetting faults, or changing
limits must be restricted to certain personnel. The OmniLink control provides several means to limit
access to these parameters or operations. These parameters and operations are called restricted items.
The OmniLink control employs combinations of two different means to limit access to restricted items.
These means are the RUN/PROG key switch on the operator terminal and a user password system. The
user password system assigns names and passwords to up to sixteen users. These two means can be
used alone or in combination with each other. When a user employs the proper means to gain access, he
will have the ability to perform the actions and change the parameters which have been designated to his
control.
There are four possible modes of operation for the restricted access system. They are the “Key Only”
mode, the “Key or Password” mode, the “Password Only” mode, and the “Key and Password” mode.
The control can be configured to operate in any one of these four modes.
Section 2.2.1 Key Only Mode
The “Key Only” mode is the least complex of the four modes. This mode employs the RUN/PROG key
as the only means to limit access to restricted items. Any user with the RUN/PROG key can access all
of the restricted items. Without the RUN/PROG key, user access to all of the restricted items is
prohibited.
Although the “Key Only” mode has the advantage of being easy to use, it does have a disadvantage.
This mode cannot give a particular user access to only some of the restricted items. When operating in
this mode, any user with the RUN/PROG key will have access to all of the restricted items.
Section 2.2.2 Key or Password Mode
The key or password mode allows for either of two means to gain access to the restricted items. A user
with RUN/PROG key can access all of the restricted items. A user with the correct password can access
the restricted items that have been designated for that particular user’s access only. The system allows
for passwords to be assigned to sixteen users. Each user can be assigned access to any or all of the
restricted items.
The following is an example of a “Key or Password” mode operation. The RUN/PROG key is given to
the die set-up personnel. A press operator is assigned a user name and password. With the password
the operator can reset tonnage monitor faults. This is the only tonnage monitor related item to which
the operator has access. In order to load a die, the set-up personnel uses the RUN/PROG key to recall a
job from job storage. The set-up personnel will also be able to make changes to tonnage monitor limits.
Once the set-up personnel sets the die and verifies its correct operation, the operator is left to run the die.
If a tonnage monitor fault occurs, the operator can enter the correct password and then reset the fault.
However, the operator cannot change tonnage monitor limits or bypass the tonnage monitor. This will
allow the operator to keep running the job and reset faults that occur. However, if consistent stops occur
because a tonnage monitor limit needs changing, the set-up personnel must be called to change the