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
C200H-CPU23
C200HW-COM06-V1
C200H-IDS01-V1
C200HW-BI051
C200HW-PCU01
C200HX-CPU64-E
C200HS-CPU31-E
C200H-CPU11
C200H-CN131
C200H-OC225
C200H-B7A21
C200HW-ATT82
C200H-ETL01-E
C200H-B7A01
C200H-CT021
C200H-RT201-C
C200HW-COM02-V1
C200H-ATT51
C200HW-BC081-V1
C200HW-COM05-EV1
C200HW-CORT21-K
C200H-TC101
C200H-OD212
C200HW-BI101-V1
C200HW-PRT21
C200H-IA221
C200HW-ATT54
C200HG-CPU53-ZE
C200HS-INT01
C200H-OC224N
C200HW-BI031
C200H-BP002
C200H-OC221
C200HW-ME08K
C200H-B7AO1
C200HW-ME32K
C200H-OC224
C200H-CN425
C200H-TL001
C200H-ID215
C200HS-CN422
C200H-CP114
C200H-DA001
C200HW-CE012
C200HX-CPU34-ZE
C200HG-CPU43-ZE
C200H-TV003
C200H-CPU22
C200HW-BC101
C200H-MC221