ProSoft Technology MVI56-AFC - Manual (Page 155)

MVI56-AFC ♦ ControlLogix Platform Security (Passwords)
Liquid and Gas Flow Computer User Manual
ProSoft Technology, Inc. Page 155 of 316
February 25, 2011
10 Security (Passwords)
In This Chapter
 Hard Password .................................................................................... 157
The passwords are intended for interrogation by application software in order to
verify an operator’s authorization to make configuration changes and to view
measurement results. The passwords are resident in the module so that different
operators using different copies of the application software must use the same
password. Passwords cannot be retrieved in "Hard Password" mode. The
password protection is not used by default.
Passwords can be numbers between -32768 and 32767. For example, 1234. A
password of 0 (zero) is interpreted as "No password present".
The module supports two passwords: Write-Enable and Read-Only. Each
password is enabled when you write a non-zero value to the corresponding
register.
Password Holding Register Address Description
Write-Enable 9 Protects the module from write operations from the
AFC Manager
Read-Only 19 Protects the module from read or write operations
from the AFC Manager