PROTOCOL-SPECIFIC INFORMATION
9.9 PROFINET IO
9.9.1 Overview
The PROFINET IO device driver allows a controller to interact with the interface card via cyclic data
exchange and acyclic read/write requests. The I/O data is entirely user-configurable, and is utilized
when a standard I/O module is chosen during network configuration.
Other notes of interest include:
• Allows simultaneous access to only 1 PROFINET controller.
• Supports conformance class B and real time (RT) communication.
• Supports the highest Netload Class III.
• Supports MRP (Media Redundancy Protocol) client.
• Supports DCP (Discovery Control Protocol).
• Supports alarms.
• Supports I&M.
• The lowest supported I/O Cycle Update Time (via STEP 7 or an equivalent hardware configuration
tool) is 1ms.
• The GSDML file can be obtained from the product
web page.
• Supports several user configurable I/O modules with up to 32 input words and 32 output words.
• Supports the PROFIdrive profile version 4.1.
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