The input/output extension block has built-in input or output terminals to add input or output terminals. Connect the input/output powered extension unit. Input/output Extension type Model Name FX2N-8ER-S/UL, Number of input/output points Total Number of points 8(16)*1, Number 4(8)*1, Number of output points 4(8)*1, Input Type 24V DC (sink/source), Output type Relay, Connection form Terminal block. Model Name FX2N-8ER, Number of input/output points Total Number of points 8(16)*1, Number 4(8)*1, Number of output points 4(8)*1, Input Type 24V DC (sink), Output type Relay, Connection form Terminal block. Input Extension type Model Name FX2N-8EX-ES/UL, Number of input/output points Total Number of points 8, Number 8, Number of output points -, Input Type 24V DC (sink/source), Output type-, Connection form Terminal block. Model Name FX2N-8EX, Number of input/output points Total Number of points 8, Number 8, Number of output points-, Input Type...