GE PACSystems RX7i, User Manual

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Chapter 10. OPC UA Server
188 PACSystems* RX7i & RX3i TCP/IP Ethernet Communications User Manual GFK-2224Q
Username/Password Authentication
You enable OPC UA server Username/Password Authentication by enabling RXi controller passwords. Machine
Edition is used to enable controller passwords. To access this setting using Machine Edition, open the RXi
hardware configuration in the Project tab within the Navigator, expand the hardware configuration, and select
the controller. Double-click the controller tree node to access the controller-specific hardware configuration
settings. Select the Settings tab, then set the Passwords parameter to Enabled (see screenshot below).
Figure 72: Machine Edition Controller Hardware Configuration – Passwords Enabled
The OPC UA server password is the same as the controller password. Controller passwords are set using the
Machine Edition commands Select Target

Online Commands

Show Status , which opens the controller
status dialog box. Select the Protection tab, click the Passwords button to set the passwords for the different
access levels (see the screenshot below).
The OPC Server assigns usernames to the different access levels. The usernames that correspond to the
different levels are as follows:
Level OPC UA Username Description
Level 4 OpcUserLevel4 Read/Write Published Variables – Additional
Privileges Reserved for Future Use
Level 3 OpcUserLevel3 Read/Write Published Variables – Additional
Privileges Reserved for Future Use
Level 2 OpcUserLevel2 Read/Write Published Variables
For example:
Level 2 password = MyLevel2Password
The OPC UA Client would use the following username/password to establish a connection.
Username = OpcUserLevel2
Password = MyLevel2Password
Please reference the Machine Edition documentation for additional details regarding setting passwords and
the privileges assigned to different levels.