Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers - Manual (Page 214)

Publication 1785-UM012D-EN-P - July 2005
12-2 Protecting Your Programs
About Passwords and
Privileges The passwords and privileges function supported by enhanced and Ethernet
PLC-5 controllers helps you protect your programs by restricting access to
controller files and functions.
You can assign a privilege class to a node, channel or file. The privilege class
defines the level of access (read or write) or type of function (I/O forcing,
memory clearing) the PLC-5 controller allows.
Privileges Supported by Enhanced and Ethernet PLC-5 Controllers
In , the class privileges assigned to each node govern the access the device has
to the controller. For example:
• Node B has Class 2 access to channel 1A, based on the node privilege
the controller has assigned it
This Privilege Restricts Access
Node from a particular node to the controller.
Channel to a particular channel on the controller.
File to view or change a file.
IMPORTANT
Node privileges override the default privilege class of
the channel.
Channel Privileges
File Privileges (program and data)
1B 1A 2A
Program
Data
Classes assigned to nodes
0
DH+
2B
Node A
Class 1 privileges
Node B
Class 2 privileges
Node C
Class 3 privileges
Node D
Class 4 privileges
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
Classes assigned
to channels
Node
Privileges