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
C200HW-ATT34
C200H-BC031-V2
C200H-TC103
C200H-ATTA1
C200H-ME832
C200H-KS01I
C200H-NC112
C200H-BC051-V1
C200H-ATT51
C200H-CN223
C200H-FZ001
C200H-ME431
C200HG-CPU53-E
C200H-B7A01
C200H-IA121
C200H-MAD01
C200HS-CPU03
C200HS-INT01
C200H-ATTA3
C200H-MR431
C200HG-CPU63-E
C200H-OD215
C200H-OC226N
C200HW-ATT32
C200HG-CPU43-ZE
C200H-OC222
C200H-PRO27-E
C200HS-CPU21
C200H-BP001
C200HX-CPU34-ZE
C200HE-CPU11-E
C200H-ASC02
C200H-ID501
C200H-CE002
C200HE-CPU11-ZE
C200H-NC211
C200H-LK101-PV1
C200HW-PD024
C200H-TC001
C200H-PAR-PTC219
C200HW-ATT53
C200HW-NC213
C200H-TL001
C200H-TC002
C200H-OD411
C200H-COV02
C200HW-ME08K
C200HW-BI101-V1
C200H-OA122-E
C200H-TC102