Mitsubishi FX-20P-E Operation Manual page 118

FX-20P-E Handy programming panel Message List 11
Error message Error code Description
Example: The I/O number is not supported by the current hardware.
1020
An explanation of the error code
1 0 2 0 Example: X20
I/O ERROR *
Device number
1: Input X
0: Output Y
11-6