Watlow EZ-ZONE PM Integrated Controller - Manual (Page 142)

Watlow EZ-ZONE ® PM Integrated Controller • 139 • Chapter 9 Features
Using Lockout and Password Security
If unintentional changes to parameter settings might raise safety concerns or lead to downtime, you can use
the lockout feature to make them more secure. There are two methods of lockout that can be deployed, both
of which are accessible from the Factory Page.
Method 1- Change the value of the Read Lock [rloc] (1 to 5) and Set Lock [sloc] (0 to 5) prompts where
the higher the value or setting for each translates to a higher security clearance (greater access).
Method 2- Enable Password Security [pas;e] and then modify the Lock Level [loC;l] value which ranges
from 1 to 5. See the section entitled Using Lockout Method 2 for more detail.
Using Lockout Method 1 (Read and Set Lock)
All Pages have security levels assigned where two of those cannot be changed (Home and Setup). Defaults
(factory settings) for each are shown below:
- Home Page = 1
- Operations Page = 2 (changeable to 1, 2 or 3)
- Setup Page = 4
- Profiling Page = 3 (changeable to 1, 2 or 3)
- Factory Page = 5*
* The Factory Page is always visible where all menus within it may or may not be visible/writable. For fur-
ther detail see table " Factory Page Menus ".
The table below represents the various levels of lockout for the Set Lockout Security prompt [SLoC] and
the Read Lockout Security prompt [rLoC]. Looking at the table, "Y" equates to yes (can write/read) where
"N" equates to no (cannot write/read). The colored cells simply differentiate one level from the next while also
showing the level where read/write is enabled. As stated previously, the Set Lockout has 6 levels (0 to 5) of
security where the Read Lockout has 5 (1 to 5). Therefore, level "0" applies to Set Lockout only.
Lockout Security [SLoC] & [rloC]
Pages
Security Level
0 1 2 3 4 5
Home Page (cannot be changed) N Y Y Y Y Y
Operations Page N N Y Y Y Y
Setup Page (cannot be
changed)
N N N N Y Y
Profile Page N N N Y Y Y
Factory Page Y Y Y Y Y Y
Being able to change the page security level for the Operations and Profile pages allows a user to give access
to the Profile Page while locking out the Operations Page. The following example shows how the Lockout
feature may be used to accomplish this:
1. Press and hold the Advance ‰ and Infinity ˆ keys for approximately 6 seconds to enter the Factory
Page
2. Navigate to the [`LoC] Menu using the Up or Down arrow keys
3. Using the green Advance key navigate to the Lock Operations prompt [LoC;o] and change it (push the
Up arrow) from the default value of 2 to 3
4. Push the Advance key again and change the Lock Profiling prompt [LoC;P] from the default of 3 to 2
5. Change Read Lockout Security [rLoC] to 2 and the Set Lockout [SLoC] to 2 or higher
With the above settings, the Home Page and the Profiling Page can be accessed, and all writable param-
eters can be written to. Due to the Read lock setting of 2 all pages with security levels greater than 2 will be
locked out (inaccessible).
Another example of Method 1 lockout usage could be that an operator wants read access to all pages while al-
lowing read/write access to the Home Page and the Lockout Menu only.
1. Press and hold the Advance and Infinity keys for approximately 6 seconds to enter the Factory Page
2. Navigate to the [`LoC] Menu using the Up or Down arrow keys
3. Using the green Advance key navigate to the Read Lockout Security [rLoC] and change it to 5
4. Push the green Advance key and navigate to the and Set Lockout Security [SLoC] changing it to 1