SL-CH1,1-CH I/O UNIT (NPN)
SL-CH1-PN,1-CH I/O UNIT (PNP)
SL-CH20,2-CH I/O UNIT (NPN)
SL-CH20-PN,2-CH I/O UNIT (PNP)
SL-CH21,2-CH INPUT UNIT (NPN)
SL-CH21-PN,2-CH INPUT UNIT (PNP)
SL-CH22,2-CH OUTPUT UNIT (NPN)
SL-CH22-PN,2-CH OUTPUT UNIT (PNP)
