12P3439X012 KJ2003X1-BB1 Computer Communication Module

12P3439X012 KJ2003X1-BB1 between the realization of the channel, can make the two complementary functions on the shortcomings of the PLC for control is both convenient and reliable, while the PC in the graphic display, data processing, print reports and Chinese display and other aspects of a very strong function. Therefore, the PLC manufacturers have developed a variety of models suitable for the company’s PLC and PC communication interface module.

The FX-232AW interface module of 12P3439X012 KJ2003X1-BB1 is used for communication between FX2 series PLCs and PCs. There are also interface modules AJ71E71 connected with Ethernet, AJ71M51-S1 connected with MAP network, and AJ71M51M1 connected with FAIS MAP network. Different communication methods have different cost price and different application scope.

The programming interface of 12P3439X012 KJ2003X1-BB1 series PLC adopts RS-422 standard, while the serial port of computer adopts RS-232 standard. Therefore, as an interface circuit to realize PLC computer communication, the RS-422 standard must be converted to the RS-232 standard. RS-232 and RS-422 standards in the transmission of signals, logical electricity is not the same.RS-232 uses a single-ended receiver and single-ended transmitter, only one signal line to transmit information, and according to the level on the signal line relative to the size of the common signal ground level to determine the logical