3 items listed below
Board type PLC
VB series: CD01-32MT (Board type PLC) / CD01-32ET (Expansion board) ;VH series: CD03-32MT (Board type PLC)
VB1-28ML-D
DC 24V Power input, 4 Line-Driver and 12 DC24V Signal Inputs, 4 Line-Driver and 8 NPN transistor Outputs, the barrier terminal.