Example 2 (with 7 I/O modules)

An IO device with a larger data range is a CI501-PNIO with seven AI523. This constellation contains 233 bytes input data and 5 bytes output data. In input direction a RT telegram is sent with about 24 µs.

Bus cycle time = 1 ms

ReductionRatio (RR) = 1

RT transmission time = 1 ms - 30 % = 700 µs

Number of IO devices = 700 µs / (24 µs + 6.4 µs) = 24

You can operate with up to 24 IO devices with the same configuration.

If more than 32 IO devices are operating, the data exchange must be decreased by changing the ReductionRatio.

ETHERNET TCP/IP

Simultaneously operation of PROFINET and ETHERNET TCP/IP in one network is possible. The parallel usage of non-real-time protocols (office applications, TCP/IP) has no influence to the real-time channel. On the other hand, a high usage rate of the real-time channel delays the non-real-time communication.

Simultaneous Usage of PROFINET and ETHERCAT

The simultaneously operation of PROFINET and ETHERCAT in one network is only possible with the following limitation: The S500 ETHERCAT IO devices may be used only at the end of the bus structure without following devices.

Simultaneous Programming via Network

The PROFINET Communication Module has no programming interface to the AC500 PLC. The PROFINET network is usable for programming purposes by connecting a CM579-ETH Communication Module or a PM5x1 ETHERNET port to the PROFINET network.