Leviton 71D03 - Page 41

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6.10 Access Restriction Limitations
If security levels have been set up in the meter, no data is accessible through the
LCD user interface or VerifEye
®
Web App without entering your PIN credentials.
NOTE: Protocols, such as Modbus, do not support any level of security so any
network traffic acting as a master can retrieve and write data from the registers.
You must have knowledge of the IP address or slave ID and the register list, which
discourages casual intrusions.
6.11 Security PIN Protection
VerifEye
®
meters have two levels of PIN protection that users can choose to assign
to restrict access to meter information. The PIN logic is described in the gure
below. The default user entry (on power up or time-out) is 0000 ,which satises
both the Read Only and the Read/Write default register settings.
Using the Permission Registers
The VerifEye
®
meter uses both a Read Only register and a Read/Write register
to compare against user entries from the LCD keypad or VerifEye
®
Web App
form entry. Both internal permission registers have a default value of 0000. A
consequence of this is that both PIN registers must be congured (i.e., changed
from defaults) to implement a read only PIN. If the PINs are not changed, a user
who wants to restrict access to Read Only by setting only this PIN may be unaware
that the default PIN still matches the criteria for Read/Write, which accidentally
promotes the user. The Power Meter Viewer Utilities software and the VerifEye
®
Web App disallow this condition, but remote programmers who use direct register
access, may create this condition.
PIN
(0000 Default)
Read / Write
Mode
(0000 Default)
VALUE MATCH?
VALUE MATCH?
Yes
No
Yes
No
Read Write Register
(0000 Default)
Read Only Register
Read Only
Mode
No Data
Access
6 COMMUNICATION AND VERIFICATION
WEB VERSION