Siemens MindConnect Nano System Manual page 118

Appendix
8.8 Read performance MindConnect Elements
Data points - Modbus RTU RS232 - 57,6 kBd
Adaptions of the limits
Subsequently listed are the parameters the influence the read performance of a MindConnect
Element. By varying one of these parameters all others will be affected as well. These are the
variables:
Performance of MindConnect hardware
Number of connections to data providers
Type of connection to providers (S7 / OPC UA / Modbus / ...)
Amount of data points per second
Type of data points (String or no string)
Performance of data provider (PLC, OPC Server)
Reading data from a data provider will always cause an effect on it. The
performance of the data provider (PLC / OPC Server / Modbus) is one of the
most important limiting factors. If more devices (e.g. OPC server, HMIs, SCADA
systems,...) are connected to this data provider (e.g. PLC) the reading cycle can
rise.
For MindConnect Software Agent, the readings are not applicable as it depends
on the hardware for a particular agent and configuration.
Example calculations (MindConnect Nano)
It can be possible to read 300 data points per second out of a PLC. This is possible if the PLC
is powerful and just one data provider is used.
It can be possible to read 1000 data points out of 30 data providers if the reading cycle will be
switched to 4sec.
It can be possible to read out of 35 data providers if you just read 200 data points per second.
MindConnect Nano
System Manual 7/2023
MindConnect Nano
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