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-TC101
C200H-TV103
C200H-TV003
C200H-RT201-C
C200H-OC224N
C200HS-CPU21-E
C200HE-CPU42-ZE
C200H-TS001
C200H-ID216
C200H-MR431
C200H-TS102
C200HG-CPU33-ZE
C200H-PID01
C200HW-COM06-EV1
C200H-B7A02
C200H-MAD01
C200H-NC413
C200H-TV101
C200HW-PA209R
C200H-COV03
C200H-DSC01
C200H-KS01F
C200H-TS101
C200HW-ME32K
C200H-CPU22
C200H-CP114
C200H-TL001
C200H-IP007
C200H-ID218
C200H-OA222V
C200H-ATT33
C200HX-CPU44-E
C200HW-CE011
C200H-ATTA1
C200H-MD501
C200H-LK101-PV1
C200H-IDS01-V1
C200H-CN211
C200H-ME831
C200H-ID219
C200H-BP002
C200H-PID02
C200H-CN311
C200H-LK202-V1
C200HE-CPU11-ZE
C200H-CPU21
C200H-CPU03
C200HW-PA204S
C200H-ATTA3
C200H-FZ001