1756-L71 以太网/IP控制网设备网 数据高速公路增强版

Allen-Bradley 1756-L71是ControlLogix可编程自动化控制器。它有2 MB的用户内存可用存储空间和0.98 MB的I/O内存。它还有一个板载4字符字母数字显示器，便于监控运行时间和模块信息以及控制器诊断。它有一个开放式外壳和一个内置的2.0全速USB端口。可用的通信选项包括DeviceNet、ControlNet、EtherNet/IP、远程I/O Data Highway Plus、第三方过程和网络以及SynchLink。它还配有1 GB的非易失性内存，但您可以使用1784-SD2将其升级到2 GB。建议将SD卡安装在控制器中。1756-L71控制器配有三个电容储能模块，其中两个是可拆卸的。它在1.2伏DC下的电流消耗为5毫安，在5.1伏DC下的电流消耗为800毫安。1756-L71控制器还具有30伏的持续隔离电压、2.5瓦的最大功耗和8.5 BTU/小时的热耗散。它的最大模拟I/O、数字I/O和总I/O分别为4，000、128，000和128，000。它的工作温度范围为0至60摄氏度，储存温度范围为-40至85摄氏度。它周围的最高气温为60摄氏度，相对湿度为5%到95%。该控制器在10到500赫兹时的振动为2G，工作时的冲击为30G，非工作时的冲击为50G，安装SD卡后下降到45G。其他控制器可能要求用户理解第一PLC寄存器的具体字节和位，以便开始寻址程序元素。对于1756-L71，用户只需插入一个程序单元，并选择I/O物理连接的逻辑通道。在其它PLC中，用户可能会发现需要将一个寄存器移到另一个寄存器，以启动转换和处理，从而获得模拟数据。该控制器只需要用户找到I/O信号物理终止的逻辑通道。

该控制器是现代Logix控制器平台的一部分，被归类为可编程自动化控制器(PAC)。这种PAC产品系列是大中型自动化要求的理想选择，尤其适合工厂和过程自动化行业的控制要求。

1756-L71主要具有2MB用户内存和0.98 MB I/O内存。它还配有一个1784-SD1安全数字(SD)存储卡，容量为1 GB非易失性内存，可以通过更换1784-SD2卡升级到2GB。该控制器可以处理多达128，000个离散输入和输出信号，以及4000个模拟输入和输出信号。

作为一种现代控制器，1756-L71不使用电池来保存随机存取存储器(RAM)或易失性存储器的内容，而是配备了目录号为756-ESMCAP或1756-ESMCAPK的储能模块。该能量存储模块是基于电容器的可移动类型。

对于工业通信，1756-L71支持安装通信适配器。1756-L71支持的其他通信协议有以太网/IP、控制网、设备网、数据高速公路Plus、远程I/O、SynchLink、第三方过程和设备网络。

该控制器是基于底盘的控制器。这意味着必须安装特定的ControlLogix机箱才能安装该模块。兼容的机箱包括1756-A4、1756-A4K、1756-A7、1756-A7K、1756-A10、1756-A10K、1756-A13、1756-A13K、1756-A17、1756-A17 K

1756-L71

The Allen-Bradley 1756-L71 is a ControlLogix Programmable Automation Controller. It has an available storage of 2 MB for user memory and an I/O memory of 0.98 MB. It also has an onboard 4-character alphanumeric display for easy monitoring of run-time and module information and controller diagnostics. It has an open-style enclosure and built-in One (1) 2.0 full-speed USB port available. The communication options that are available include DeviceNet, ControlNet, EtherNet/IP, Remote I/O Data Highway Plus, Third-party process and networks, and SynchLink. It also ships with a 1 GB non-volatile memory, but you can upgrade it to 2 GB with the 1784-SD2. It is recommended that the SD card be left installed in the controller. The 1756-L71 controller ships with three capacitor energy storage modules, two of which are removable. It has a current draw of 5 mA at 1.2 Volts DC and 800 mA at 5.1 Volts DC. The 1756-L71 controller also has a continuous isolation voltage of 30 Volts, a maximum power dissipation of 2.5 Watts, and a thermal dissipation of 8.5 BTU/hour. It has a maximum analog I/O, digital I/O, and a total I/O of 4,000, 128,000, as well as 128,000, respectively. It has an operating temperature range of 0 to 60 Degrees Celsius and a storage temperature range of -40 to 85 Degrees Celsius. Its maximum surrounding air temperature is 60 degrees Celsius and it has a noncondensing relative humidity of 5% to 95%. The controller has a vibration of 2G at 10 to 500 Hertz, an operating shock of 30G, and a non-operating shock of 50G that goes down to 45G when the SD card is installed. Other controllers may require the user to understand first PLC registers specifically Byte and Bit in order to start addressing program elements. With 1756-L71, the user simply needs to insert a program element and select the logical channel to where the I/O is physically wired. In other PLCs, the user may find the need to move a register to another to initiate conversion and processing just to get the analog data. This controller simply requires the user to find the logical channel where the I/O signal is physically terminated.

This controller is part of the modern Logix controller platform which are classified as Programmable Automation Controller (PAC). This PAC product range is ideally used for medium to large automation requirements, particularly compatible in control requirements of Factory and Process Automation industries.

The 1756-L71 mainly feature 2MB user memory and 0.98 MB I/O memory. It is also shipped with a 1784-SD1 Secure Digital (SD) memory card amounting to 1 GB non-volatile memory which can be upgraded to 2GB by replacing with 1784-SD2 card. This controller can handle up to 128,000 Discrete input and output signals and 4000 Analog Input and output signals as well.

Being a modern controller, the 1756-L71 does not use battery to retain the contents of the Random Access Memory (RAM) or volatile memory instead, it is equipped with energy storage modules with catalog number 756-ESMCAP or 1756-ESMCAPK. This energy storage module is of removable type which is capacitor based.

For industrial communication, the 1756-L71 supports installation of communication adapters. Other supported communication protocols by the 1756-L71 are EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, SynchLink, Third-party process and device networks.

This controller is a chassis based controller. Which means a specific ControlLogix chassis must be installed in order to mount the module. Compatible chassis include 1756-A4, 1756-A4K, 1756-A7, 1756-A7K, 1756-A10, 1756-A10K, 1756-A13, 1756-A13K,1756-A17, 1756-A17 K.