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-CE001
C200H-TS102
C200HW-AB001
C200HW-NC213-LD
C200H-MAD01
C200H-CN422
C200HW-ME16K
C200H-NC413
C200HW-COM05-EV1
C200H-KS01I
C200H-MD501
C200H-ATT03
C200HG-CPU43
C200H-IDS01-V1
C200H-BC051-V2
C200H-KS01F
C200H-OD212
C200HW-ATT53
C200H-OC222
C200HW-CLK21
C200H-CT001
C200H-ID218
C200HX-CPU64-E
C200H-ATT81
C200H-CN001
C200H-TC002
C200H-IA222
C200H-TL001
C200HG-CPU43-ZE
C200HW-COM04-EV1
C200H-PAR-PTC219
C200H-CN131
C200HW-CE002
C200H-TC001
C200HS-INT01
C200H-IA121
C200H-ASC02
C200HS-CN422
C200H-ID111
C200HG-CPU53-E
C200H-OD501
C200H-BC081-V1
C200H-ID001
C200H-B7A21
C200HW-CE011
C200HS-CN222
C200H-PS221
C200H-PID01
C200H-RT001-P
C200H-TM001