Product data

44
Unity
™
Pro XLS (continued)
Project protection options
Unity Pro XLS provides protective functions to help prevent unauthorized access to
safety projects, to the SIL 3 Quantum
™
PLC and to Unity Pro XLS.
The application password, dened when the project was created, b
is requested:
When the application le is opened
v
Upon connection to the SIL 3 Quantum PLC
v
The safety editor integrated in Unity Pro XLS is used to dene the access rights b
and the list of authorized functions for each user, in particular:
Creation and modication of the application password
v
Activation of maintenance mode
v
Adjustment of the auto-lock period b
Functions and function blocks for SIL 3 Quantum applications
Unity Pro XLS provides a set of elementary functions (EFs) and elementary function
blocks (EFBs) certied for use in SIL 3 applications:
Standard functions certied for SIL 3 applications include: b
Mathematical functions and functions for manipulating data from the
v
unrestricted memory area in the safety logic
Comparison functions
v
Logic functions, rotations, shift operations
v
Statistical functions
v
Timer and counter setup
v
Type conversions
v
Specic functions for safety architectures include: b
High availability setup: choice of two inputs from a redundant discrete I/O
v
module or a redundant analog input module
Hot Standby PLC redundancy setup: to cause the two processors involved in a
v
hot standby conguration to change roles from primary to standby and standby
to primary respectively. The objective is to verify the capacity of each processor
to take over in case the other processor becomes inoperative. With Unity Pro
XLS, this function can very easily be programmed in the application by setting
up the S_HSBY_SWAP elementary function from the library.
Modicon
™
Quantum
™
Ethernet I/O
automation platform
Unity
™
Pro software
XLS
Functions (continued)