Protocol Stack Enables Profinet Device Development

Molex has introduced the Brad IO-Device protocol development kit v2.2 for Profinet that enables OEMs to develop and market their own branded Profinet IO devices. Fully compliant with Profinet IO v2.2 specifications, the Molex protocol stack supports conformance Class-B and has already been integrated on customer system platforms and PNO-certified by the Profibus User Organisation. Due to its adaptation hardware and operating system layers, the Molex IO-Device stack can be ported on any customer platform quickly and easily.

During the SPS/IPC/Drives exhibition, Molex will demonstrate the IO-Device stack's trouble-free portability by running it on an Apple Ipad tablet PC connected to a Siemens S7-300 controller. The Ipad application simulates a Molex IP67 Profinet I/O device where it is possible to start and stop the stack, read inputs and write outputs digital value, and generate alarms. On the Profibus-Profinet International stand, there will be a second demonstration showing the Molex stack running Isochronous Real Time (IRT) on the EasyIRT hardware platform developed by InES, the Institute of Embedded Systems at Zurich University of Applied Sciences.

Hans Dermot Doran, head of real-time Ethernet research group, said: 'In this application, the Molex IO-Device stack was made IRT compatible within a couple of days. 'In the demonstration, we will run the Molex Profinet stack on the Altera Cyclone III microprocessor using a NIOS operating system,' he added. The Molex Profinet stack consists of a CD ROM including ANSI C-source code, sample applications with source code, and a user manual that includes the complete application interface documentation and the step-by-step instructions on how to port the stack.

The stack has been successfully ported to the following CPU types: Intel x86, ARM 7/9, Motorola Power PC, Innovasic Fido, and others. The stack supports the following operating systems: Win32, Vxworks, QNX, Linux, Ecos, ThreadX, and others. Supported Profinet features include: MRP Client, LLDP, FSU, IandM.

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