Rockwell Automation Publication IOLINK-UM001A-EN-P - August 2017 7
Chapter 1
836P Pressure Sensor with IO-Link Overview
What Is IO-Link?
The IO-Link technology is an open point-to-point communication standard
and was launched as (IS) IEC 61131-9. IO-Link is now the first globally
standardized technology for sensor and actuator communication with a field
bus system. This technology provides benefits to both OEMs and end users.
IO-Link provides communications-capable sensors to the control level by a
cost-effective point-to-point connection. IO-Link provides a point-to-point
link between the I/O module and sensor that is used for transferring detailed
diagnostics, device identity information, process data, and parameterization.
IO-Link communication is based on a master-slave structure in which the
master controls the interface access to the sensor. The option of using the
intelligence that is integrated into the sensor provides you with new methods
to commission your device. Benefits of IO-Link technology range from
reduced installation time during startup to increased diagnostics over the
lifetime of the machine. Other benefits of IO-Link technology include:
• Reduced inventory and operating costs
• Increased uptime/productivity
• Simplified design, installation, creation, and maintenance
• Enhanced flexibility and scalability
• Detailed diagnostic information for preventive maintenance
Why IO-Link?
IO-Link offers a full range of advanced features and functions.
Seamless Integration
• Forward and backward compatible, sensor catalog numbers remain the
same
• No special cables required
• Connectivity options remain the same
• Access IO-Link functionality by simply connecting an IO-Link enabled
device to an IO-Link master
• Analog devices no longer require a dedicated input card
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