屏蔽码 meaning in Chinese

mask off code
set system mask

Completed the initialization of can parameter for the communication card and conversion card by compile setting program . designed communication program to actualize the supervision and control of programmable logic controllers by upper computer
使用专用can接口库函数编写设置程序完成了对接口卡、 can485转换卡的can参数(如滤波方式、通讯模式、验收码和屏蔽码等)的初始化设定。