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-ME16K
C200H-PID03
C200H-SP001
C200H-LK401
C200H-DSC01
C200H-ASC11
C200H-ATT03
C200H-KS01E
C200H-BC051-V2
C200H-OA122-E
C200H-CN111
C200HX-CPU65-E
C200HW-BC051
C200HW-PD024
C200HW-NC413
C200H-ID501
C200H-RT001-P
C200H-ATT83
C200H-NC413
C200HS-CN422
C200HS-INT01
C200HW-BI101-V1
C200HW-ATTA3
C200H-MR832
C200H-OD217
C200H-MAD01
C200H-B7A01
C200HW-CE012
C200H-ATT33
C200HW-BI101
C200HW-CE001
C200H-MD115
C200H-TS002
C200H-OC224N
C200H-PAR-MRK1031G
C200HG-CPU43
C200H-TC003
C200H-CN425
C200H-OC222
C200HW-CE002
C200H-ID111
C200H-NC112
C200HS-CPU01
C200HW-PA209R
C200H-ASC31
C200HG-CPU33-ZE
C200HW-ME08K
C200HS-CN222
C200HW-CE011
C200H-OC222N