Ограничения ПО

Максимальные ограничения OI серверов

Limitations

• Single Instance
  • 50,000 I/O total regardless the number of PLC connections
  • Limit to 100 PLC connections in a single instance (It is not a hard limit, but a recommended limit)
  • Consider that when you have to reset or restart the instance all the PLC connections for that instance are affected.

• Multi-Instance configuration
  • In a single node, you can create up to 100 multi-instances of a server.
  • Each instance in itself is independent of the other.
  • Balancing the number of PLCs per instance
    • If you want to divide equally, it could be 20 devices per instance.
    • You could also divide based on functional areas or whatever makes sense.

• Hardware
  • If this was a node running by itself, you could run such an architecture with 4-8 Cores / 8-16 GB RAM.
  • You may need to consider other software running in the node which may impact load and performance

• Вопрос был про SIDirect так что ещё коментарии.

1. DASSiDirect has past its support lifecycle as it is older than 5 years… No longer supported 2. OI SIDirect a. Important: All OI Servers are DAServers under the hood. There was a name change (yes confusing… but lets move forward) b. A single instance of SI Direct supports up to 50,000 I/O. Having said that, the performance of the controllers varies significantly in Siemens an S7-1518 is 30 times faster than a 1515… The customer can validate the controller specs in the TIA Portal software when selecting a controller. c. The refresh speed also impacts 3. Multi-Instance – The professional version of the OI Server supports multi-instance. Please visit the HMI SCADA YouTube channel for details on this. a. If the customer is looking for scalability, they should strongly consider the professional edition.