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
C200HW-SLK13
C200H-RT001-P
C200H-IP006
C200H-ID216
C200H-ATT02
C200HW-PRM21
C200H-KS01G
C200H-COV11
C200HW-BI101-V1
C200HG-CPU63-ZE
C200H-PS221-C
C200HW-ATT83
C200H-PID02
C200H-MR832
C200HW-PA204C
C200HW-BC081-V1
C200H-RM001-PV1
C200HS-CPU01-E
C200H-CPU03-E
C200H-CN225
C200H-TC003
C200HW-ATT32
C200H-TL001
C200H-TV102
C200H-RT202
C200HW-ATT82
C200HW-ATTA3
C200HW-COM06-V1
C200H-OA222
C200HW-COM03-V1
C200H-OD216
C200H-TV101
C200HS-CPU03
C200H-ME432
C200H-DAC01
C200H-PS211
C200H-RT002-P
C200H-LK101-PV1
C200HX-CPU65-ZE
C200H-BP002
C200H-OA223
C200H-OC226N
C200H-ATT83
C200H-APS03
C200H-CPU03
C200HW-SRM21-V1
C200H-ATT03
C200H-DIN01
C200H-CP114
C200HW-BC101-V1