Appendix A. PROFINET IO Performance Examples
GFK-2571N May 2018 155
B. – 16ms PROFINET Update Rate Systems
B.1 – Multi-Device
This system contained an IC695CPU315, IC695ETM001, and an IC695PNC001 in the main rack. The PNC001
module was connected in a network bus configuration to 20 VersaMax PNS modules (IC200PNS001), each
configured for a 16ms PROFINET update rate. Each PNS contained at least 1 discrete input, discrete output,
analog input, or analog output module. The I/O Loopback measurement was taken using a 16-point output
module (IC200MDL741) owned by one VersaMax PNS, that was then tied to the 16-point input module
(IC200MDL640) owned by a different VersaMax PNS. The input module (IC200MDL640) was configured for a 0
ms Input DC Filter time.
B.1.1 – Multi-Device with MRP
This system is identical to the B.1 – Multi-Device configuration, except that Media Redundancy Protocol (MRP)
was in use. To exercise MRP, the network was set up in a ring configuration and the PNC001 module was
configured as an MRP Manager with a configured Default Test Interval of 20ms.
B.2 – Sixty-four IO-Device
This system contained an IC695CPU315, IC695ETM001, and an IC695PNC001 in the main rack. The PNC001
module was connected in a network bus configuration to 64 VersaMax PNS modules (IC200PNS001), each
configured for a 16ms PROFINET update rate. Each PNS contained at least one discrete input, discrete output,
analog input, or analog output module. The I/O Loopback measurement was taken using a 16-point output
module (IC200MDL741) owned by one VersaMax PNS, that was then tied to the 16-point input module
(IC200MDL640) owned by a different VersaMax PNS. The input module (IC200MDL640) was configured for a 1
ms Input DC Filter time.
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