When used for PLC output card PLC output card e-con type 16 point branch unit 16 point output unit PLC output card Output branch unit e-con type16 point unit 16 point output unit PLC input card e-con type 16 point branch unit 16 point input unit When used for PLC input card PLC input card Input branch unit e-con type16 point unit 16 point input unit PC Wiring System Precautions 2 Be sure to read before handling. Refer to back page 1 for Safety Instructions. Series PCW Design & Selection 1. Only the output specification unit can be selected when combining each unit of Series PCW and Series PCW-EC. Please note: If an input specification unit is used, this may cause damage and/or possible burnout of any connected equipment. Warning A 605