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
C200HX-CPU85-ZE
C200HE-CPU32-E
C200H-BC051-V2
C200H-OA224
C200H-BC031-V2
C200HW-ZW3AT2-EV2
C200H-KS01E
C200H-ME432
C200H-TC102
C200HG-CPU43-E
C200H-CN131
C200H-IDS01-V1
C200HW-NC213-LD
C200HW-ATT53
C200H-ID001
C200HS-CN222
C200HG-CPU53-ZE
C200HW-ASCST-CV2
C200H-OC221
C200H-OD501
C200H-ATT51
C200H-ATTA3
C200HG-CPU63
C200H-CN001
C200H-RT201
C200H-PS221-C
C200H-CPU21
C200HW-NC413
C200H-FZ001
C200HW-BC081
C200H-DA001
C200HE-CPU42-ZE
C200HX-CPU34-E
C200HX-CPU54-E
C200H-RT202
C200H-NC111
C200H-TC001
C200H-TS001
C200H-DA004
C200H-CN425
C200H-MR831
C200H-MP831
C200H-TC002
C200HW-BC031
C200HW-ATT33
C200HW-COM02-V1
C200H-ATT01
C200H-CP114
C200H-MD215
C200HW-BI051