KJ3204X1-BA1 12P3275X032 KJ4001X1-CJ1 VE4002S1T2B5 Computer Serial Communication Port

KJ3204X1-BA1 12P3275X032 KJ4001X1-CJ1 VE4002S1T2B5 Through this command set, from the most basic volume control to the built-in parameter setting changes, can be by the VB through the serial port and the modem control commands. AT command set is the industry standard for the communication interface of the modem. All AT commands start with the character AT as a prefix.

KJ3204X1-BA1 12P3275X032 KJ4001X1-CJ1 VE4002S1T2B5 used to cause the modem’s attention (Attention) to detect the rate of the computer serial communications port to send signals to identify the format of the characters, including the character length and parity settings. After dialling, the modem waits for the carrier signal from the other modem. If no carrier is detected within a given time, the modem automatically releases the line and sends back the result code NOCARRIER.

KJ3204X1-BA1 12P3275X032 KJ4001X1-CJ1 VE4002S1T2B5 detects the carrier signal, the modem sends the result code CONNECT + baud rate, and enters into the on-line state, which can be used to communicate with the remote system. In this system, the PC as the master, you must control the modem active dialling, in addition, after confirming the modem and PLC modem online successfully control it to enter online mode, start accessing PLC data.