扩充卡种类：485BD、232BD、COBD、ENBD、RTCBD、AIBD、AOBD、MABD、 CAMBD 等，可扩充数字量 I/O、模拟量 AD/DA、通讯模块等

BSP02-0CV
BSP02-1AOBD
BSP02-232BD
BSP02-2AIBD
BSP02-2D2TBD
BSP02-3MABD
BSP02-485BD
BSP02-4DBD
BSP02-4RBD
BSP02-COBD
BSP02-ENBD
BSP02-RTCBD