I/O Configuration error E(1020)

Anyone knows what this error means?, I go into the monitor program SWOPC-FXG/WIN-E V1.10.

Under the selection PLC---PLC Diagnostics and hit Ok, and it displays this error for me:

I/O Configuration Error E(1020)

, but no clue or idea of what is the error, no explanation on the help or anywhere. All of this during the monitoring of my program.

Sincerely
Edgar C.

checdw,
it would help if you would tell us what plc and mocel # you are using as well as the programming software.

regards,
james

James,

Sorry, the PLC it is a Mitsubishi FX2N-48N with expansion units, the programming software that I am using is the one mention on my post SWOPC-FXG/WIN-E V1.10, The mocel# I am not familiar with this term.