在CPU的一个槽内安装一块合适型号的通信板，CPU就可以增加RS232C，RS422，或RS485端口
C200HS-CPU31-E
C200HX-CPU54-ZE
C200H-MR431
C200HG-CPU53-ZE
C200H-B7A01
C200H-IP007
C200HW-ME08K
C200HW-SLK24
C200H-CN711
C200H-FZ001
C200H-RT201
C200HG-CPU33-E
C200H-RM001-PV1
C200H-OC225
C200H-APS03
C200HG-CPU63
C200H-ID218
C200H-ATTA3
C200H-ID219
C200HW-COM02-V1
C200H-OD217
C200H-ID501
C200H-MR833
C200HW-ME32K
C200HE-CPU32-ZE
C200H-TC101
C200H-OA221
C200H-KS01S
C200HW-PRM21
C200HW-PA204R
C200H-IA121
C200HW-COM05-EV1
C200H-TS001
C200HG-CPU63-E
C200HW-BC081-V1
C200H-MAD01
C200H-TV103
C200H-CE002
C200HW-BI101
C200H-CPU21
C200H-ID001
C200H-ATT31
C200H-IA221
C200HW-PA204
C200H-PS211
C200H-CPU22
C200H-CPU03
C200H-BC051-V1
C200H-CPU01
C200H-CT001