◇PC链接单元包含在可连接的特殊I/O单元数目中（多10个单元）虽然这需要机号设定，但它不占IR区域DM区
◇运用PC链接单元的分隔处理功能，PC链接服务可以分成2，4，8部分，以免增加扫描周期
◇为了有效地操作多台PC的大规模系统，需在PC之间进行交换数据，PC链接单元是必不可少的
◇PC链接单元使用链接继电器（LR）区，因此可以与其他C系列PC交换数据，由于它不占用I/O区，因此可以节省I/O点数
C200H-ME431
C200H-ID218
C200H-B7A02
C200HW-ATT53
C200H-PAR-PTC219
C200HE-CPU42-E
C200H-CN223
C200HW-BI031
C200HW-COM04-EV1
C200HW-ATTA4
C200H-CN221
C200H-AD003
C200H-PID02
C200H-MR832
C200H-B7A12
C200H-TC003
C200HS-CN422
C200H-RM201
C200HX-CPU64-E
C200HW-CE002
C200HG-CPU33-E
C200H-BP001
C200HW-BC101
C200HW-ATT54
C200H-COV03
C200H-BC101-V2
C200H-IDS01-V1
C200HW-COM01
C200H-OD218
C200H-CPU02-E
C200H-COV11
C200H-PS221-C
C200H-ATT81
C200H-OA222V
C200H-OD211
C200H-BC081-V1
C200HW-PCU01
C200HW-ATTA3
C200H-DA004
C200HW-DRM21-V1
C200HG-CPU43-ZE
C200H-IA221
C200HW-COM06-V1
C200HW-ATT84
C200H-PRO27-E
C200H-PID01
C200H-TS002
C200H-DA001
C200H-LK201-V1
C200H-ME831