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-BC051-V1
C200H-ID501
C200H-IA221
C200HW-PA209R
C200HW-ME16K
C200H-ID215
C200HW-CE001
C200H-KS01S
C200H-LK401
C200HG-CPU53-E
C200H-CN422
C200H-ATT53
C200HW-DRT21
C200HW-BC081-V1
C200HW-COM01
C200H-TC003
C200HW-ATT32
C200H-CPU31
C200H-CPU23
C200H-DA003
C200HE-CPU42-ZE
C200HW-SLK24
C200H-MR433
C200H-DSC01
C200H-ID001
C200HW-COM05-V1
C200H-RM201
C200H-CPU03
C200HS-CPU23-E
C200H-IP007
C200H-TV102
C200HG-CPU63
C200H-CPU02-E
C200HW-DRM21-V1
C200H-TS102
C200H-OD213
C200H-CN211
C200H-DAC01
C200H-NC111
C200H-DA001
C200HW-PRM21
C200HW-BC101-V1
C200H-TV002
C200HG-CPU63-ZE
C200H-PID03
C200H-TL001
C200H-B7A02
C200H-AD002
C200HW-ATT82
C200H-ASC02