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What is the Syntax of the IN Parameter of the ADDM block used by M340 PLCs when communicating over Modbus?

For addressing a device using the Modbus protocol, the IN parameter takes the form 'r.m.c.e', where:

  • r — rack number
  • m — module position
  • c — channel number of the Modbus port (0)
  • e — Modbus slave number (equipment), range 1 to 247

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