The input signal forms are different. All the programmable controllers for the domestic market other than the FX3G/FX3U series are the sink input. The programmable controllers for the overseas market and the FX3G/FX3U series can switch the sink/source input. Also, transistor outputs differ between the sink output type and source output type.
All the products of the FX3G/FX3U series are compliant with the overseas standards.
For the models other than the FX3G/FX3U series, the products for the overseas market are compliant with overseas standards.