Real time clock (rtc) – Watlow EZ-ZONE RMA Modul User Manual

Page 44

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Watlow EZ-ZONE

®

RMA Module

41

Chapter 6 Features

with a password would have visibility restricted by

the Read Lockout Security [rloC]. As an example,

with Password Enabled and the Locked Access Level
[ loC;L]

set to 1 and [rloC] is set to 3, the available

Pages for a user without a password would be limited

to the Home and Factory Pages (locked level 1). If the

user password is entered all pages would be acces-

sible with the exception of the Setup Page as defined

by level 3 access.
How to Enable Password Security
1. Go to the Factory Page by holding down the Infini-

ty ˆ key and the Advance

key for approximately

six seconds.

2. Again push the Advance

key until the Password

Enabled [pas;e] prompt is visible. Lastly, push ei-

ther the up or down key to turn it on.

Once Password Enable is turned on, 4 new prompts

will appear:
3. [loC;l] - Locked Access Level (1 to 5) correspond

ing to the lockout table above.

4. [roll] - Rolling Password will change the Cus-

tomer Code every time power is cycled.

5. [pas;u] , User Password which is needed for a Us-

er to acquire access to the control.

6. [pas;a] , Administrator Password which is need-

ed to acquire administrative access to the control.

The Administrator can either change the User and

or the Administrator password or leave them in the

default state. Once Password Security is enabled they

will no longer be visible to anyone other than the Ad-

ministrator. As can be seen in the formula that fol-

lows, either the User or Administrator will need to

know what those passwords are to acquire a higher

level of access to the control. Back out of this menu

by pushing the Infinity ˆ key. Once out of the menu,

the Password Security will be enabled.
How to Acquire Access to the Module
To acquire access to any inaccessible Pages or Menus,

go to the Factory Page and enter the Unlock [UloC]

Menu. Once there follow the steps below:

Note:

The unlock menu will appear only if the Password En-

able prompt has been enabled.

1. Acquire either the User Password [pas;u] or the

Administrator Password [pas;a].
2. Push the Advance

key one time where the Code

[Code] prompt will be visible.
Note:

a. If the the Rolling Password is off push the Ad-

vance key one more time where the Password

[pass] prompt will be displayed. Proceed to
either step 7a or 8a. Pushing the Up ¿ or Down

¯ arrow keys enter either the User or Adminis-

trator Password. Once entered, push and hold

the Infinity ˆ key for two seconds to return to

the Home Page.

b. If the Rolling Password [roll] was turned on

proceed on through steps 3 - 9.

3. Assuming the Code [Code] prompt (Public Key)

is still visible on the face of the control simply

push the Advance key

to proceed to the

Password [pass] prompt. If not find your way

back to the Factory Page as described above.
4. Execute the calculation defined below (7b or 8b) for

either the User or Administrator.
5. Enter the result of the calculation in the upper dis-

play by using the Up ¿ and Down ¯ arrow keys or

use EZ-ZONE Confgurator Software.
6. Exit the Factory Page by pushing and holding the

Infinity ˆ key for two seconds.
Formulas used by the User and the Administrator to

calculate the Password follows:
Passwords equal:
7. User
a. If Rolling Password [roll] is Off, Password

[pass] equals User Password [pas;u].
b. If Rolling Password [roll] is On, Password

[pass] equals: ([pas;u] x code) Mod 929 + 70
8. Administrator
a. If Rolling Password [roll] is Off, Password

[pass] equals User Password [pas;a].

b. If Rolling Password [roll] is On, Password

[pass] equals:
([pas;a] x code) Mod 997 + 1000
Differences Between a User Without Password,
User With Password and Administrator
- User without a password is restricted by the

Locked Access Level [loC;l].
- A User with a password is restricted by the

Read Lockout Security [rloC] never having ac-

cess to the Lock Menu [`loC].
- An Administrator is restricted according to the

Read Lockout Security [rloC] however, the Ad-

ministrator has access to the Lock Menu where

the Read Lockout can be changed.

Real Time Clock (RTC)

The RTC is used with the RMC module equipped

with the profiling feature and Data Logging (date

and time stamp). With a little thought (using wait-for

steps, logic and compare functions), the programmer

can use the RTC to synchronize RMC profile engines.

While executing a profile the application require-

ments may dictate that if power is lost and then re-

stored that the profile execution automatically termi-

nate or conversely continue where it left off based on

how long the power was out. Within the Setup Page

under the Profile Menu a parameter can be found

that addresses this need; it is called the "Power Off

Time" [poti]. This time is defined in seconds and a

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