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Published 20 hours ago • verified publisher icon apache

[Feature Request][MODBUS]: Build a QueryOptimizer for PLC4J Modbus

Open chrisdutz opened this issue 2 months ago • 1 comments

What would you like to happen?

The modbus spec seems to provide limits for the size of packets. However in contrast to the other protocols, is this limit not related to the size of the packet, but by the number of registers/coils.

Please refer to: https://www.modbus.org/docs/Modbus_Application_Protocol_V1_1b3.pdf, page: 11

It should be simple to implement a query-optimizer for Modbus to automatically handle this. The Siemens S7 QueryOptimizer might help with inspiration.

Programming Languages

  • [X] plc4j
  • [ ] plc4go
  • [ ] plc4c
  • [ ] plc4net

Protocols

  • [ ] AB-Ethernet
  • [ ] ADS /AMS
  • [ ] BACnet/IP
  • [ ] CANopen
  • [ ] DeltaV
  • [ ] DF1
  • [ ] EtherNet/IP
  • [ ] Firmata
  • [ ] KNXnet/IP
  • [X] Modbus
  • [ ] OPC-UA
  • [ ] S7

chrisdutz avatar Jun 19 '24 07:06 chrisdutz