EMERSON A6120 输入输出模块信号传输通常，当模拟输入输出信号距PLC较远时，应采用4-20ma或0-10ma的电流传输方式，而不是电压传送方式。传送模拟信号的屏蔽层为一端接地。为了泄放高频干扰，数字信号线的屏蔽层应并联电位均衡线，并将屏蔽层两端接地。扩展模块的选用：80点以内的系统，一般不需要扩展，当系统较大时就要扩展。当扩展不能满足要求时，可采用网络结构。扩展模块种类很多，如单输入模、单输出模块、输入输出模块、温度模块、高速输入模块等。PLC的网络设计：用PLC进行网络设计难度比PLC单机控制大得多。
A6120
EMERSON A6120 输入输出模块首先应先用自己较熟悉的机型，对其基本指令和功能指令有较深入的了解，并且指令的执行速度和用户程序存储容量也应仔细了解。否则，不能适应实时要求，造成崩溃。另外，还要考虑通信接口、通信协议、数据传送速度等。最后，还要向商家寻求网设计和软件技术支持及详细技术资料。软件编制：在编制软件前，应首先熟悉所先用的PLC产品软件说明书。若用图形编程器或软件包，则可直接编程，若用手持编程器编程，应先画出梯形图后再编程。编程结束后先空调程序，待各个动作正常后，再在设备上调试。
A6120
The signal transmission of EMERSON A6120 input/output module is usually achieved by using 4-20mA or 0-10mA current transmission instead of voltage transmission when the analog input/output signal is far from the PLC. The shielding layer for transmitting analog signals is grounded at one end. In order to release high-frequency interference, the shielding layer of the digital signal line should be connected in parallel with a potential equalization line, and both ends of the shielding layer should be grounded. The selection of expansion modules: For systems up to 80 points, expansion is generally not necessary. When the system is large, expansion is necessary. When the expansion cannot meet the requirements, a network structure can be used. There are many types of expansion modules, such as single input module, single output module, input output module, temperature module, high-speed input module, etc. PLC network design: The difficulty of using PLC for network design is much greater than that of PLC single machine control.
A6120
The EMERSON A6120 I/O module should first use a familiar model to have a deep understanding of its basic and functional instructions, and the execution speed of instructions and user program storage capacity should also be carefully understood. Otherwise, it cannot adapt to real-time requirements and cause crashes. In addition, it is necessary to consider communication interfaces, communication protocols, data transmission speed, etc. Finally, it is necessary to seek website design, software technical support, and detailed technical information from merchants. Software development: Before developing software, one should first familiarize themselves with the PLC product software manual used. If using a graphic programmer or software package, programming can be done directly. If using a handheld programmer for programming, the ladder diagram should be drawn first before programming. After programming, start the air conditioning program and wait for all actions to be normal before debugging on the device.
There are no reviews yet.