Step Description Reference
Step 2-2 Designing Safety
Programs
Design the POUs (Program Organization Units).
• Programs
• Function blocks
Design of Variables:
• Design the data types of the variables (partic-
ularly the design of safety data types and
standard data types).
• Define the variables that you will use in more
than one POU and variables that you will use
in only specific POUs.
• Define the variable names for the device vari-
ables that you use to access Safety I/O Units.
• Define the attributes of variables, such as the
Name attribute.
• Design the variables to expose to the user
program for the standard controls.
• Design the interface with the safety controls
of the user program for the standard controls.
S
ection 6 Programming on
page
6 - 1
Step 2. Hardware Design
Step Description Reference
Step 2-1 Determining Wir-
ing for Communications,
Power Supply, and Exter-
nal I/O Devices
Determine the wiring for the communications
network, power supply, and safety I/O devices.
2-1-2 Part Names and Func-
tions on page 2 - 8
Manuals for specific Communi-
cations Coupler Units
Manuals for the specific NX
Units
Step 3. Calculating and Verifying Safety Response Performance
Step Description Reference
Step 3-1 Calculating Safe-
ty Reaction Time and Safe-
ty Distance
Calculate the safety reaction times and use
them to find the safety distances.
S
ection 8 Calculating Safety
Reaction Times on page
8 - 1
Step 3-2 Verifying Fulfill-
ment of Required Specifi-
cations
Check to see if requirements are met. If require-
ments are not met, reconsider the designs again
starting with the system design.
Section 8 Calculating Safety
Reaction Times on page
8 - 1
Step 4. Software Settings and Programming
Step Description Reference
Step 4-1 Creating the
Safety Control System
Configuration
On the Sysmac Studio, configure the NX bus
master
, Safety CPU Unit and Safety I/O Units
.
5-3 Controller Configuration
and Setup of the Safety Control
Units on page 5 - 5
Step 4-2 Setting Up and
Checking the Safety Proc-
ess Data Communications
Check the settings for the safety process data
communications and make any necessary
changes.
5-4 Setting Up the Safety Proc-
ess Data Communications on
page 5 - 12
1 Overview
1 - 17
NX-series Safety Control Unit User's Manual (Z930)
1-4 Commissioning Procedures
1
1-4-2 Detailed Procedures
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