Connecting assembly for PLC communication interface

The utility model relates to the technical field of connecting devices, in particular to a connecting assembly for a PLC (Programmable Logic Controller) communication interface, which comprises a communication interface connecting piece main body, a first controller fixedly mounted at the front end of a mounting assembly, a second controller fixedly mounted on the right side of the first controller, and a fixing sheet mounted below the first controller, the outer side of the fixing piece is provided with a fixing groove, the lower portion of the fixing groove is provided with a connecting groove, and during use, first installation cables or second installation cables of different interfaces are installed in the fixing groove and can slide on the side face of the adjusting block to adjust the position, then the first controller and the second controller are pressed down, and the first controller and the second controller are connected through the connecting groove. The fixing piece extends out under the action