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Protocol

Modbus RTU

Lab ready Full lab

Binary Modbus ADU on serial lines: address, PDU (function + data), and CRC-16. Silent intervals of 3.5 character times delimit frames; function codes read/write coils and registers.

Domains

  • industrial
  • embedded

Layers

  • application
  • datalink
  • physical

Tags

crc16scadaregistersrs-485industrial

Sources

  • Modbus Application Protocol V1.1b3
  • Modbus Serial Line Protocol

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