1794-ASB A-B  IO离散开关控制器

品牌:AB

型号:1794-ASB

工作电压:24VDCv

输出频率:50kHz

产品认证:UL

系列:17461756

物料编码;1794-ASB

AB1794-ASB是罗克韦尔自动化(Rockwell utomation)公司生产的一种工业控制系统模块，属于ControlLlogix系列的一部分。这个模块的主要功能是提供数字输入/输出(IO）和开关接口，用于连接开关、传感器、执行器和其他数字设备，以实现控制和监控任务。以下是关于AB1794-ASB开关接口卡的1794-ASB一些常见信息:

1.数字IIO:1794-ASB模块提供数字输入和数字输出接口，通常用于连接数字开关、传感器Q、按钮、执行器和其他数字设备。这使得它能够在控制系统中执行离散的开关控制任务。

2.开关接口:该模块设计用于连接各种类型的开关设备，如限位开关、按钮开关、微动开关等。它可以读取这些开关的状态并向其发送控制信号。

3.通信协议:1794-ASB模块通常通过ControlLogix控制器使用EtherNetIP或ControlNet等工业以太网协议进行通信。这使得它能够与其他设备和系统进行数据交换和通信。

4.模块化设计:ControlLogix系列通常采用模块化设计，因此您可以根据需要添加或更换模块，以满足不同应用的要求。

5.配置和编程:配置和编程AB1794-ASB模块通常需要使用罗克韦尔自动化的控制器编程工具，如Studio 5000。通过编程，您可以配置模块以执行所需的控制和监控功能。

6.工业应用:AB1794-ASB 开关接口卡通常用于工业控制和自动化应用，如工厂自动化、生产线控制、机械控制、设备监视和报警系

统等。

1794-ASB工作速度是指PLC的CPU执行指令的速度及对急需处理的输入信号的响应速度。工作速度是PLC工作的基础。速度高了，才可能通过运行程序实现控制，才可能不断扩大控制规模，才可能发挥PLC的多种多样的作用。

PLC的指令是很多的。不同的PLC。指令的条数也不同。少的几十条，多的几百条。指令不同，执行的时间也不同。但各种PLC总有一些基本指令，而且各种的PLC都有这些基本指令，故常以执行一条基本指令的时间来衡量这个速度。这个时间当然越短越好，已从衡秒级缩短到零点撷秒级。并随着微处理器技术的进步，这个时间还在缩短。

1794-ASB执行时间短可加快PLC对一般输入信号的响应速度。从讨论PLC的工作原理知，从对PLC加入输入信号，到PLC产生输出，的情况也要延迟一个PLC运行程序的周期。因为PLC监测到输入信号，经运行程序后产生的输出，才是对输入信号的响应。不理想时，还要多延长一个周期。当输入信号送入PLC时，PLC的输入刷新正好结束，就是这种情况。这时，要多等待一个周期，PLC的输入映射区才能接受到这个新的输入信号。对一般的输入信号，这个延迟虽可以接受，但对急需响应的输入信号，就不能接受了。对急需处理的输人信号延迟多长时间PLC能予以响应，要另作要求。

为了处理急需响应的输入信号，PLC有种种措施。不同的PLC措施也不完全相同，提高响应速度的效果也不同。一般的作法是采用输入中断，然后再输出即时刷新，即中断程序运行后，有关的输出点立即刷新，而不等到整个程序运行结束后再刷新。

这个效果可从两个方面来衡量:一是能否对几个输入信号作快速响应，二是快速响应的速度有多快。多数PLC都可对一个或多个输入点作快速响应，快速响应时间仅几个毫秒。性能高的、大型的PLC响应点数更多。

工作速度关系到PLC对输入信号的响应速度，是PLC对系统控制是否及时的前提。控制不及时，就不可能准确与可靠，特别是对一些需作快速响应的系统。这就是把工作速度作为PLC指标的原因。

1794-ASB A-B  IO离散开关控制器

Brand :AB

Model :1794-ASB

Working voltage :24VDCv

Output frequency :50kHz

Product Certification :UL

Series :17461756

Material code; 1794-ASB

The AB1794-ASB is an industrial control system module manufactured by Rockwell utomation as part of the ControlLlogix family. The main function of this module is to provide digital input/output (IO) and switching interfaces for connecting switches, sensors, actuators and other digital devices for control and monitoring tasks. Here are some common 1794-ASB information about the AB1794-ASB switch interface card:

1. Digital IIO:1794-ASB module provides digital input and digital output interfaces, usually used to connect digital switches, sensor Q, buttons, actuators and other digital devices. This enables it to perform discrete switch control tasks in a control system.

2. Switch interface: The module is designed to connect various types of switch equipment, such as limit switch, button switch, micro switch, etc. It can read the status of these switches and send control signals to them.

3. Communication protocol: The 1794-ASB module usually communicates via the ControlLogix controller using industrial Ethernet protocols such as EtherNetIP or ControlNet. This allows it to exchange data and communicate with other devices and systems.

4. Modular design: The ControlLogix series usually has a modular design, so you can add or replace modules as needed to meet the requirements of different applications.

5. Configuration and programming: Configuring and programming AB1794-ASB modules typically requires the use of Rockwell Automation's controller programming tools, such as the Studio 5000. Programmatically, you can configure modules to perform the desired control and monitoring functions.

6. Industrial applications :AB1794-ASB switch interface cards are commonly used in industrial control and automation applications, such as factory automation, production line control, machine control, equipment monitoring and alarm systems

All right.

1794-ASB working speed refers to the speed at which the PLC's CPU executes instructions and responds to the input signal that needs to be processed urgently. Working speed is the basis of PLC work. The speed is high, it is possible to achieve control through the running program, it is possible to continuously expand the scale of control, and it is possible to play a variety of roles of PLC.

PLC instructions are numerous. Different PLCS. The number of instructions is also different. Dozens less, hundreds more. Different instructions take different time to execute. However, various PLCS always have some basic instructions, and various PLCS have these basic instructions, so the speed is often measured by the time it takes to execute a basic instruction. This time, of course, the shorter the better, has been shortened from the scale of the second to the zero second. And with advances in microprocessor technology, that time is shrinking.

1794-ASB Short execution time speeds up the PLC's response to general input signals. From the discussion of the working principle of PLC, it is known that from the input signal to the PLC to the output of the PLC, it is also necessary to delay the cycle of a PLC operation program. Because the PLC monitors the input signal, the output generated after running the program is the response to the input signal. When it is not ideal, it is necessary to extend one more cycle. When the input signal is sent to the PLC, the input refresh of the PLC is just finished, which is the case. At this time, it is necessary to wait one more cycle for the PLC input mapping area to receive this new input signal. Although this delay is acceptable for general input signals, it is not acceptable for input signals that require an urgent response. How long PLC can respond to the delay of the input signal that needs to be processed urgently is another requirement.

In order to process the input signals that require urgent response, the PLC has various measures. Different PLC measures are not exactly the same, and the effect of improving the response speed is also different. The general practice is to use the input interrupt, and then the output is refreshed immediately, that is, after the interrupt program runs, the relevant output point is refreshed immediately, rather than waiting for the entire program to run after the refresh.

This effect can be measured in two ways: one is the ability to respond quickly to several input signals, and the other is how fast the rapid response is. Most PLCS can respond quickly to one or more input points in just a few milliseconds. High performance, large PLC response points more.

The working speed is related to the PLC's response speed to the input signal, and is the premise of the PLC's timely control of the system. Without timely control, it is impossible to be accurate and reliable, especially for some systems that require rapid response. This is why the working speed is used as a PLC indicator.