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Search FAQs

What does error 1633 mean when downloading a project to the PLC using Concept software?

1633
Checksum error
Bad communication or interruption on the line.
  • Check that the Modbus cable pinout is correct.
  • Modbus cable connected to Modbus Plus port?.
  • Try Modbus Plus or Ethernet comm.
  • Switch to ASCII mode
  • XMIT block taking port 1?
  • Download in increments.