1785-L60E 可编程控制器

Description

1785-L60E 可编程控制器

描述:艾伦-布拉德利1785-L60L处理器是艾伦-布拉德利的处理器和可编程控制器。它是作为Allen-Bradley PLC 5系列控制器的一部分设计和制造的。1785-L60L处理器和可编程控制器可以使用不同的内存模块，如Allen-Bradley 1785-ME16, 1785-ME32, 1785-ME64和1785-M100内存模块。它的最大用户内存容量是64K字。1785-L60L处理器和可编程控制器可以在运行模式、远程模式或程序模式下运行。

1785-L60L是PLC-5控制器系列的一员。这种可编程控制器可以作为基于艾伦-布拉德利PLC-5系列的任何控制系统的中心部分。1785-L60L是连接不同类型通信接口上的本地、扩展和远程I/O模块的中心点，是控制系统的骨干。1785-L60L控制器具有三个集成通信接口，标记为通道1A，通道1B和通道2。通道1A和通道1B可以用作远程I/O扫描器、远程I/O适配器或DH+通信接口。1785-L60L上的第三个通信接口，通道2，是一个扩展的本地I/O端口。1785-L60L控制器有一个25针连接器，在前面板上标记为通道0。通道0是光隔离的EIA RS232C端口，支持ASCII和DF1全双工和半双工主协议以及半双工从协议。通道0有绿灯，指示通信接口的状态。此外，还有一个标记为1A通道的8针迷你DIN连接器，这是一个与1A通道平行的DH+编程终端连接。前面板下部有两个三针连接器。这些连接器用于通道1A和1B，这两个通信端口可以用作远程I/O扫描仪、远程I/O适配器或DH+通信端口。在1785-L60L的前面板上，有一个特殊的连接器标记为通道2，这是一个扩展的本地I/O触点。

Remote I/O Scanner Mode在控制器和远端I/O设备之间读写I/O信息。当用作I/O扫描器时，1785-L60L是适配器模式下其他控制器和其他远程I/O适配器的监控控制器。当通道1A或通道1B配置为远程I/O适配器时，1785-L60L控制器管理驻留在控制器上的I/O，同时通过远程I/O链路与控制器通信。在1785-L60L上，可以在1A或1B通道上配置DH+链路。DH+通信用于与其他PLC-5控制器或控制系统的其他高级组件创建点对点网络。1785-L60L控制器的编程也可以通过DH+链接完成。通过使用DH+链接，可以同时对多个控制器进行编程。DH+链路的最大电缆长度取决于传输速率。将链路上的所有设备配置为以相同的速率通信是很重要的。长度从3048米(速度为57.6千比特/秒)到762米(速度为230.4千比特/秒)。当需要的I/O多于单个机箱所能容纳的I/O时，扩展的本地I/O链路很有用，但它需要比远程I/O链路提供的更快的速度。安装在远程I/O机箱中的1785-L60L和扩展本地I/O适配器(1771-ALX)与I/O链路电缆相互连接，形成扩展本地I/O链路。扩展的本地I/O链路限于100英尺的电缆。如果需要将I/O机框与控制器保持较远的距离，请使用远程I/O链路。扩展本地I/O链路为并行链路，使1785-L60L控制器最多可以扫描16个扩展I/O机箱。扩展本地I/O上每个机架的扫描时间为0.5 ms。1785-L60L前面板上有多个指示灯，方便用户操作。指示灯显示控制器的各种状态。标有“BATT”的指示灯显示电池状态。PROC指示灯显示当前控制器的工作模式。例如，当控制器处于RUN模式时为绿色，当出现问题时为红色。启用I/O强制时，FORCE指示灯呈琥珀色。COMM指示灯与Channel 0通信状态相关联。通信通道1A和1B都有专用的状态指示灯。通道2，用于扩展本地I/O连接，有一个专用状态指示灯。

1785-L60L可以在三种不同的模式下工作。模式选择是通过控制器前面板上的三个位置键开关进行的。每个位置对应一个处理器模式。RUN模式运行控制器程序。在其中，可以启用输出，可以强制I/O，可以编辑数据表值，可以保存程序。但是，不能创建或删除程序和数据文件。当1785-L60L处于编程模式时，输出为d

1785-L60E

1785-L60E 可编程控制器

Description: The Allen-Bradley 1785-L60L processor is a processor and programmable controller from Allen-Bradley. It has been designed and manufactured as part of the Allen-Bradley PLC 5 series of controllers. The 1785-L60L processor and programmable controller can work with different memory modules like the Allen-Bradley 1785-ME16, 1785-ME32, 1785-ME64, and 1785-M100 memory modules. Its maximum user memory capacity is 64K words. The 1785-L60L processor and programmable controller can operate in the run mode, the remote mode, or the program mode.

The 1785-L60L is a member of the PLC-5 controller series. This programmable controller can function as a central part of any control system based on the Allen-Bradley PLC-5 series. The 1785-L60L is the central point that interconnects local, extended, and remote I/O modules on different types of communication interfaces, and which acts as the backbone of the control system. The 1785-L60L controller has three integrated communication interfaces marked as Channel 1A, Channel 1B, and Channel 2. Channel 1A and Channel 1B can function as remote I/O scanners, remote I/O adapters, or as DH+ communication interfaces. The third communication interface on the 1785-L60L, Channel 2, is an extended-local I/O port.   The 1785-L60L controller has a 25-pin connector marked as Channel 0 on the front panel. Channel 0 is an optically-isolated EIA RS232C port, which supports ASCII and DF1 full-duplex and half-duplex master protocols as well as half-duplex slave protocols. Channel 0 has a green light for indicating the status of the communication interface. In addition, there is one 8-pin mini DIN connector marked as Channel 1A, which is a DH+ programming terminal connection parallel to Channel 1A. Two three-pin connectors are on a lower part of the front panel. These connectors are for Channels 1A and 1B, and these two communication ports can function as remote I/O scanners, remote I/O adapters, or as DH+ communication ports. On the 1785-L60L’s front panel, there is special connector marked as Channel 2, which is for an extended local I/O contact.

Remote I/O Scanner Mode reads and writes I/O information between the controller and the remote I/O device. When used as an I/O scanner, the 1785-L60L is a supervisory controller for the other controllers in Adapter Mode and for the other remote I/O adapters. When either Channel 1A or Channel 1B is configured as a remote I/O adapter, the 1785-L60L controller manages the controller-resident I/O while communicating with the supervisory controller through a remote I/O link. A DH+ link can be configured on either Channel 1A or 1B on the 1785-L60L. DH+ communication is used for creating a peer-to-peer network with other PLC-5 controllers or other higher-level components of the control system. Programming of the 1785-L60L controller can be also done via a DH+ link. By using a DH+ link, multiple controllers can be programmed at the same time. The maximum cable length for a DH+ link depends on the transmission rate. It is important that all devices on the link are configured to communicate at the same rate. That length ranges from 3048m from a speed of 57.6 kilobits per second to 762m for a speed of 230.4 kilobits per second. An extended local I/O link is useful when more I/O than what can fit in single chassis is necessary, but it requires greater speed than a remote I/O link can provide. The 1785-L60L and extended local I/O adapter (the 1771-ALX) installed in the remote I/O chassis interconnected with the I/O link cable form an extended-local I/O link. The extended local I/O link is limited to 100 feet of cable. If the I/O chassis needs to be further from the controller, use the remote I/O link. The extended local I/O link is a parallel link that enables the 1785-L60L controller to scan a maximum of 16 extended I/O chassis. Scan time per rack on an extended – local I/O is 0.5 ms.  The 1785-L60L has several indicators on the front panel to make user interface easy. The indicators display various controller statuses. The indicator marked BATT displays the battery status. The PROC indicator shows the current controller mode. For example, it is green when the controller is in RUN Mode, and red when something is wrong. The FORCE indicator is amber when the I/O forces are enabled. The COMM indicator is linked to the Channel 0 communication status. Communication Channels 1A and 1B both have dedicated status indicators. Channel 2, used for extended – local I/O connection, has a dedicated status indicator.

The 1785-L60L can work in three different modes. Mode selection is made via a three-position key-switch on the front plate of the controller. Each position corresponds to one processor mode. RUN Mode runs the controller program. In it, outputs are enabled, I/O can be forced, data table values can be edited, and programs can be saved. However, program and data files cannot be created or deleted. When the 1785-L60L is in Program Mode, the outputs are d