4 PIN Numbers
We have borrowed the term “PIN” from the banking industry. It stands for
“Personal Identification Number”.
The MR400 uses PINs, or as we frequently call them “PIN Numbers”,
extensively to control functions that are important to the security of the
information in the meter and in controlling its use.
The use of the specific PINs is explained in later sections. However, this
section contains an overview.
4.1 How are PIN Numbers Formed?
• A PIN number for an MR400 may contain only the digits 1,2,3,4 or 5.
This makes a PIN number easy to enter into the front panel of the
meter by using the five buttons.
• PIN numbers may be either 3 or 6 digits long.
4.2 The MR400’s Built-In PIN Numbers
The MR400 has three PIN numbers, which are programmed into it when it is
first manufactured. These cannot be changed. These are all six-digit numbers,
which provide 15,625 possible combinations.
A record of these numbers is provided with your new MR400.
The numbers are:
4.2.1 The “Disable” PIN
This PIN allows you to control the use of your MR400 by only allowing it to
work for a pre-set period of time before it is disabled. See section 5.4.3 for
details.
❢ The “Disable Feature” is dependent on the settings in your Tariff. It may
not, therefore, be available on your MR400.
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