Rockwell Automation Publication 5094-UM001C-EN-P - April 2019 19
Digital I/O Module Operation in a Logix 5000 Control System Chapter 1
Secure Access to the System
To secure access to the [device] by authorized users only, consider these options:
• Password helps protect the source and execution of the control program
• Remove the key from the controller
• Deploy EtherNet/IP devices in accordance with recommended
architectures and concepts. See the Converged Plantwide Ethernet
(CPwE) Design and Implementation Guide, publication ENET-TD001
.
• Implement physical barriers, such as locked cabinets
To secure access to the system, consider these options:
• Follow industry best practices to harden your personal computers and
servers, including anti-virus/anti-malware and application whitelisting
solutions.
The recommendations are published at the Rockwell Automation
technical support center in Knowledgebase article Rockwell Automation
Customer Hardening Guidelines, #546987. The technical support center is
available at: https://rockwellautomation.custhelp.com/
• Develop and deploy backup and disaster recovery policies and procedures.
Test backups on a regular schedule.
• Minimize network exposure for all control system devices and systems, and
confirm that they are not accessible from the Internet.
• Locate control system networks and devices behind firewalls and isolate
them from the business network.
• Subscribe to the Rockwell Automation Security Advisory Index,
Knowledgebase article KB54102, so you have access to information about
security matters that affect Rockwell Automation products.
Types of Modules
Tabl e 3 describes the types of FLEX 5000 I/O modules.
Table 3 - FLEX 5000 Standard and Safety Digital I/O Modules
Cat. No.
(1)
(1) XT modules can operate in extreme environments while non-XT modules cannot.
Description
5094-IB16, 5094-IB16XT 18…32V DC 16-point, sink input module
5094-IB16S, 5094-IB16SXT 18…32V DC 16-point sinking safety input module
5094-OB16, 5094-OB16XT 18…32V DC 16-point, sourcing output module
5094-OB16S, 5094-OB16SXT 18…32V DC 16-point sourcing safety output module
5094-OW8I, 5094-OW8IXT 5…240V AC /125V DC 8-point, isolated normally open relay output module
STATUS
POWER
SAFETY DIGITAL 16 INPUT 24 VDC
5094-IB16S
5
5
TB3I
FLEX 5000
TM
I/O
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
STATUS
POWER
DIGITAL 16 INPUT 24 VDC
5094-IB16
1
1
TB3
FLEX 5000
TM
I/O
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Safety Modules
Standard Modules
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