1785-L80B 控制系统 提供4个内置接口

【产品详情】

可编程控制器1785-L80B是基于艾伦布拉德利PLC-5系列的每个控制系统的中心部分。1785-L80B通过各种通信接口将本地、扩展和远程I/O模块连接到一个控制系统中。1785-L80B控制器提供4个内置接口。端口标识为通道1A、通道1B、通道2A和通道2B。所有端口都可以配置并用作远程I/O扫描器、远程I/O适配器和DH+通信接口。DH+通信既可用于远程编程和监控1785-L80B，也可用于在各种PLC-5控制器之间创建点对点通信网络。远程I/O连接用于控制器与I/O之间的实时数据交换、操作员接口等功能。1785-L80B上的所有四个通道都可以用作远程I/O扫描器或远程I/O通信适配器。远端I/O扫描模式在控制器和远端I/O设备之间读写I/O信息。在这种模式下，1785-L80B是处于适配器模式的其他控制器和远程I/O适配器模块的监控控制器。当四个通道1A、1B、2A或2B中的任何一个处于远程I/O适配器模式时，控制器在通过远程链路与监控控制器通信的同时监视其控制器驻留的本地I/O。在1785-L80B上，数据高速公路+ (DH+)链路可以在所有四个现有通道上使用。DH+通信可用于数据传输到其他PLC-5控制器或控制系统的其他高级组件。DH+链接可以编程多个PLC-5控制器。在1785-L80B控制器的前面板上，有一个标记为通道0的25针连接器。这是一个光隔离EIA RS232C端口。通道0支持ASCII和DF1全双工、半双工主、半双工从协议。前面板为绿色通道0通信指示灯。在通道0旁边，有两个8针mini-DIN连接器，标记为通道1A和通道2A，并有一个DH+编程端子连接并行通道1A和2A。有4个3针连接器用作通信端口。这些三针连接器用于通道1A、1B、2A和2B。所有这些端口都可以用作远程I/O扫描器、远程I/O适配器或DH+通信端口。DH+链路的最大电缆长度取决于传输速率。至关重要的是，DH+链路上的所有设备都以相同的速率进行通信。当速度为57.6千比特/秒时，最长长度为3048米;当速度为230.4千比特/秒时，最长长度为762米。1785-L80B在前面板上有几个指示灯，便于交互。指示灯显示控制器的各种状态。标有“BATT”的指示灯反映电池的状态。标有“PROC”的指示灯表示控制器的当前工作模式，在“RUN”模式下指示灯为绿色，有异常时指示灯为红色。启用I/O强制时，FORCE指示灯呈琥珀色。COMM指示灯与通道0的通信状态相关联。指示灯为绿色，表示通道正在通信。通信通道1A、1B、2A、2B各有专用状态指示灯。

Allen-Bradley 1785-L80B是PLC-5系列的可编程逻辑控制器(PLC)。它是增强型PLC 5系列的一部分，主要特点是100,000字的嵌入式存储器，能够容纳任何混合的3072 I/O或在互补模式下运行时的3072输入和3072输出。

1785-L80B设计了多个通信接口，可以同时与不同的自动化设备通信。它有四(4)DH+/远程I/O(适配器或扫描仪)标记为CH1A, CH1B;CH2A和CH2B;1个串口可配置RS-232和RS-422A电气标准，支持DF1协议，2个编程终端。1785-L80B能够与多达93个I/O机箱和多达32个Remote I/O (RIO)机架通信。

增强型PLC 5控制器(如1785-L80B)主要用于控制系统需要与大量Remote I/O (RIO)设备通信以及与大量Data Highway Plus (DH+)设备连接的情况。

安装时，1785-L80B可安装在1771-A1B、1771-A2B、1771-A3B、1717-A3B1和1771-A4B PLC5机箱中。该处理器支持的电源包括1770-P1、1770-P45、1770-P5、1771-PE、1771-P4S1、1771-P6S1、1771-P4R和1771-P6R。

它还用于配置I/O模块和扩展机架。

1785-L80B 控制系统 提供4个内置接口

【英文介绍】

The Programmable controller 1785-L80B is the central part of every control system based on the Allen Bradley PLC-5 series. The 1785-L80B connects local, extended, and remote I/O modules to a single control system through a variety of communication interfaces. The 1785-L80B controller provides four built-in ports. Ports are identified as channels 1A, 1B, 2A, and 2B. All ports can be configured and used as remote I/O scanners, remote I/O adapters, and DH+ communication interfaces. DH+ communication can be used both to remotely program and monitor the 1785-L80B and to create a point-to-point communication network between various PLC-5 controllers. Remote I/O connectivity is used for real-time data exchange between the controller and I/O, operator interface and other functions. All four channels on the 1785-L80B can be used as remote I/O scanners or remote I/O communication adapters. Remote I/O scanning mode I/O information is read and written between a controller and a remote I/O device. In this mode, the 1785-L80B is a monitoring controller for other controllers and remote I/O adapter modules that are in adapter mode. When any of the four channels 1A, 1B, 2A, or 2B are in remote I/O adapter mode, the controller monitors the local I/O where its controller resides while communicating with the monitoring controller over the remote link. On the 1785-L80B, the Data Highway + (DH+) link can be used on all four existing channels. DH+ communication can be used for data transfer to other PLC-5 controllers or other advanced components of the control system. DH+ link can program multiple PLC-5 controllers. On the front panel of the 1785-L80B controller, there is a 25-pin connector labeled channel 0. This is an optically isolated EIA RS232C port. Channel 0 supports ASCII and DF1 full-duplex, half-duplex master, and half-duplex slave protocols. The green channel 0 communication indicator is displayed on the front panel. Next to channel 0, there are two 8-pin mini-DIN connectors, labeled Channel 1A and Channel 2A, and there is a DH+ programming terminal connecting parallel channels 1A and 2A. There are four 3-pin connectors used as communication ports. These three-pin connectors are used for channels 1A, 1B, 2A, and 2B. All of these ports can be used as remote I/O scanners, remote I/O adapters, or DH+ communication ports. The maximum cable length of a DH+ link depends on the transmission rate. It is essential that all devices on the DH+ link communicate at the same rate. When the speed is 57.6 kbit/s, the longest length is 3048 meters; When the speed is 230.4 kbit/s, the maximum length is 762 meters. The 1785-L80B has several indicators on the front panel for easy interaction. Indicators show the status of the controller. The indicator light labeled "BATT" reflects the battery status. The indicator marked with "PROC" indicates the current operating mode of the controller, which is green in "RUN" mode and red when there is an exception. When I/O forcing is enabled, the FORCE indicator is amber. COMM indicator is associated with the communication status of channel 0. If the indicator is green, the channel is communicating. Communication channels 1A, 1B, 2A, and 2B each have dedicated status indicators.

The Allen-Bradley 1785-L80B is a programmable logic controller (PLC) in the PLC-5 series. It is part of the enhanced PLC 5 series and the main feature is 100,000 words of embedded memory capable of accommodating any hybrid 3072 I/O or 3072 input and 3072 output when running in complementary mode.

The 1785-L80B is designed with multiple communication interfaces that can communicate with different automation devices simultaneously. It has four (4)DH+/ Remote I/O(adapter or scanner) labeled CH1A, CH1B; CH2A and CH2B; 1 serial port configurable with RS-232 and RS-422A electrical standards, DF1 protocol support, 2 programming terminals. The 1785-L80B is capable of communicating with up to 93 I/O enclosures and up to 32 Remote I/O (RIO) racks.

Enhanced PLC 5 controllers, such as the 1785-L80B, are primarily used when the control system needs to communicate with a large number of Remote I/O (RIO) devices and connect to a large number of Data Highway Plus (DH+) devices.

When installed, the 1785-L80B can be installed in the 1771-A1B, 1771-A2B, 1771-A3B, 1717-A3B1, and 1771-A4B PLC5 chassis. The processor supports power supplies including 1770-P1, 1770-P45, 1770-P5, 1771-PE, 1771-P4S1, 1771-P6S1, 1771-P4R, and 1771-P6R.

It is also used to configure I/O modules and extend racks.

1785-L80B 控制系统 提供4个内置接口

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