1746-IB16 SER D SLC 500 Digital Input Module输入模块1734-IE2V C POINT I/O 2 Point Analog Input Module输入模块1734-IB2 Ser. A POINT I/O Digital Input Module 24VDC Sinking 2-Ch输入模块1734-OB8 SER C POINT I/O 8 Point Digital Output Module输出模块1734-IE2C POINT I/O 2 Point Analog Input Module输入模块1734-TB3S PLC电源模块控制器POINT I/O模块批发