A／D单元是把外电路的模拟量，转换成数字量，然后送入PLC；D／A单元，是把PLC的数字量转换成模拟量，再送给外电路。作为一种特殊的I／O单元，它仍具有I／O电路抗干扰、内外电路隔离、与输入输出继电器（或内部继电器，它也是PLC工作内存的一个区，可读写）交换信息等等特点。
Agilestar - EX-SFP-10GE-SR - Juniper - New in Box
Agilestar - XENPAK-10GB-LR - For Cisco - New in Box
Agilestar - 10GBSR XFP-AS - For Brocade - New in Box
Agilestar - AA1403001-AS - For Nortel - New in Box
Agilestar - AA1419029-AS - For Nortel - New in Box
Agilestar - FTR-1519-V2-AS - For Finisar - New in Box
Agilestar - SFPP-SR-AS - For Fujitsu - New in Box
Agilestar - AS-SFP10G-LRM - For Agilestar - New in Box
Agilestar - AS-XFP-10G-SR - For Agilestar - New in Box
Agilestar - FG-TRAN-SFP SR-AS - For Fortinet - New in B
Agilestar - FG-TRAN-XFPSR - For use in Fortinet - NIB
Agilestar - 3CXENPAK92 - For use in 3Com - 10GBASE-LR
