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-OD216
C200H-CPU22
C200H-OD218
C200H-BC051-V1
C200H-TC103
C200HW-ATT83
C200HE-CPU32-ZE
C200HW-ATT32
C200H-DA002
C200H-ID218
C200HW-PA204C
C200H-OD213
C200HW-PD025
C200H-AD001
C200H-TC001
C200H-RT002-P
C200HW-COM03-V1
C200HS-CPU03
C200HW-CORT21-K
C200H-CPU02-E
C200H-BC081-V1
C200H-ASC02
C200H-OA122-E
C200HW-ATT34
C200H-RT202
C200H-CN002
C200HW-BC031
C200H-AD002
C200HE-CPU11-E
C200HW-COM06-V1
C200H-CT021
C200H-CPU01
C200H-TV003
C200HW-ATT33
C200H-OD217
C200H-LK401
C200H-TC003
C200H-CN711
C200H-OC224
C200HW-ATT52
C200HX-CPU44-E
C200H-B7A21
C200HW-NC413
C200HW-COM01
C200HG-CPU53-ZE
C200HG-CPU43-ZE
C200H-B7A02
C200H-BC101-V2
C200HX-CPU64-ZE
C200H-MAD01