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-MD215
C200H-LK202-V1
C200H-PAR-EPTC210B
C200H-MR831
C200H-RT202
C200H-KS01I
C200HS-INT01
C200HW-COM06-V1
C200H-ID215
C200HS-CPU01
C200H-OD218
C200H-PAR-MRK1031G
C200HX-CPU44-ZE
C200HW-NC413
C200H-CN211
C200H-CPU01
C200H-CN001
C200H-LK401
C200H-IM211
C200H-DAC01
C200H-BC101-V2
C200HW-ME32K
C200HS-CPU03
C200H-BP002
C200HW-BC031
C200HW-ATT83
C200H-B7A12
C200H-OD213
C200HG-CPU33-E
C200H-NC211
C200H-OC222N
C200H-CPU11
C200H-ATT81
C200H-CPU23
C200H-OD21A
C200H-ASC02
C200HW-ATTA4
C200H-LK101-PV1
C200H-CN521
C200H-OD219
C200HS-ME16K
C200H-IM212
C200H-ASC31
C200HE-CPU32-ZE
C200H-OC224
C200HW-COM03-V1
C200H-IA122
C200HS-MP16K
C200HW-PCU01
C200H-OA224