Allen Bradley 1756-IB32 数字量输入模块

Allen Bradley 1756-IB32 数字量输入模块

Allen Bradley 1756-IB32 数字量输入模块

PLC控制开关量的能力是很强的。所控制的入出点数，少的十几点、几十点，多的可到几百、几千，甚至几万点。由于它能联网，点数几乎不受限制，不管多少点都能控制。

所控制的逻辑问题可以是多种多样的：组合的、时序的；即时的、延时的；不需计数的，需要计数的；固定顺序的，随机工作的；等等，都可进行。

PLC的硬件结构是可变的，软件程序是可编的，用于控制时，非常灵活。必要时，可编写多套，或多组程序，依需要调用。它很适应于工业现场多工况、多状态变换的需要。

用PLC进行开关量控制实例是很多的，冶金、机械、轻工、化工、纺织等等，几乎所有工业行业都需要用到它。目前，PLC首用的目标，也是别的控制器无法与其比拟的，就是它能方便并可靠地用于开关量的控制。

Allen Bradley 1756-IB32 数字量输入模块

The ability of PLC to control the switching quantity is very strong. The number of points controlled by the input and output, as few as ten or dozens of points, can reach hundreds, thousands, or even tens of thousands of points. Because it can be networked, the number of points is almost unlimited, no matter how many points can be controlled.

The logic problems under control can be varied: combinatorial, sequential; Immediate, delayed; Not required to be counted; Working in a fixed order or at random; And so on. It can be done.

The hardware structure of PLC is variable, and the software program is programmable, which is very flexible when used for control. If necessary, it can write multiple sets, or multiple groups of programs, and call them as needed. It is suitable for multi-condition and multi-state transformation in industrial field.

There are many examples of switching quantity control with PLC, metallurgy, machinery, light industry, chemical industry, textile, etc., almost all industrial industries need to use it. At present, the first goal of PLC is not comparable to other controllers, that is, it can be easily and reliably used for the control of switching quantity.