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-TC102
C200H-ID002
C200HW-DRM21-V1
C200HW-BC101
C200HG-CPU33-ZE
C200HW-ME04K
C200H-DA001
C200H-CPU01
C200HG-CPU63
C200H-IP006
C200H-RT201
C200H-OA223
C200HW-PA204
C200H-OA222V
C200H-TV103
C200H-OD218
C200HW-CLK21
C200H-MC221
C200H-CN131
C200H-ATTA1
C200HW-AB001
C200HW-COM06-V1
C200HW-BI101
C200HW-SLK23
C200HW-BI081-V1
C200H-COV11
C200HW-ATT32
C200HW-PRT21
C200H-CN111
C200HS-CPU31-E
C200H-OD213
C200HW-CE001
C200H-LK401
C200H-TC101
C200HG-CPU33-E
C200H-TS001
C200H-OD411
C200HW-COM05-EV1
C200HW-PRM21
C200HW-ATT52
C200H-TV002
C200H-TC002
C200H-LK202-V1
C200HW-ZW3AT2-EV2
C200H-ASC31
C200H-OA122-E
C200HW-BC051
C200HW-BI101-V1
C200H-CN221
C200H-B7AO1