1756-L71是Allen-Bradley / Rockwell Automation制造的可編程自動(dòng)化控制器。
1756-L71主要具有2MB用戶內(nèi)存和0.98 MB I/O內(nèi)存。它還配有一個(gè)1784-SD1安全數(shù)字(SD)存儲(chǔ)卡，容量為1 GB非易失性內(nèi)存，可以通過更換1784-SD2卡升級(jí)到2GB。該控制器可以處理多達(dá)128，000個(gè)離散輸入和輸出信號(hào)，以及4000個(gè)模擬輸入和輸出信號(hào)。對(duì)于工業(yè)通信，1756-L71支持安裝通信適配器，且支持的其他通信協(xié)議有以太網(wǎng)/ IP、控制網(wǎng)、設(shè)備網(wǎng)、數(shù)據(jù)高速公路Plus、遠(yuǎn)程I/O、SynchLink、第三方過程和設(shè)備網(wǎng)絡(luò)。
可編程自動(dòng)化控制器（Programmable Automation Controller，PAC）是將可編程控制器（PLC）可靠、堅(jiān)固、易于使用等特性與工業(yè)電腦（IPC）強(qiáng)大的計(jì)算能力、通信處理、廣泛的第三方軟件最佳地結(jié)合在一起的多功能工業(yè)用自動(dòng)化控制器。
可編程自動(dòng)化控制器主要具有以下特點(diǎn)：

抗干擾能力強(qiáng)，可靠性高；
程序簡(jiǎn)單易學(xué)，系統(tǒng)的設(shè)計(jì)調(diào)試周期短；
安裝簡(jiǎn)單，維修方便；
采用模塊化結(jié)構(gòu)，體積小，重量輕；
豐富的I/O接口模塊，擴(kuò)展能力強(qiáng)。

1756-L71

The 1756-L71 is a programmable Automation controller manufactured by Allen-Bradley/Rockwell Automation.
The 1756-L71 mainly has 2MB of user memory and 0.98 MB of I/O memory. It also comes with a 1784-SD1 secure digital (SD) memory card with a capacity of 1 GB of non-volatile memory, which can be upgraded to 2GB by replacing the 1784-SD2 card. The controller can process up to 128,000 discrete input and output signals, and 4,000 analog input and output signals. For industrial communications, the 1756-L71 supports the installation of communication adapters, and other supported communication protocols are Ethernet/IP, control network, Device network, Data Highway Plus, remote I/O, SynchLink, third-party process and device networks.
Programmable Automation Controller (Programmable Automation Controller, PAC is a multifunctional industrial automation controller that optimally combines the reliability, robustness, and ease of use of programmable controller (PLC) with the powerful computing power, communication processing, and extensive third-party software of industrial computer (IPC).
Programmable automation controller mainly has the following characteristics:

Strong anti-interference ability, high reliability;
The program is simple and easy to learn, and the design and debugging cycle of the system is short;
Simple installation, easy maintenance;
Modular structure, small size, light weight;
Rich I/O interface modules with strong expansion capability.

1756-L71