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Allen Bradley - PLC

PLC 5

The wide variety of controllers in the PLC-5 product lineup allows you to select the unit that works best with your application’s requirements. Controllers are available with user memory capacity ranging from 8K words up to 100K words. If you require a compact system, you can use the controller that best matches your requirements and is able to operate while only drawing minimal power from your system. The controllers are further offered with a variety of communication ports that you can select from depending if your system uses the Data Highway Plus or Ethernet network. The 1785-ENET module can be used to provide Ethernet capability to PLC-5 controllers that do not have it built in. The 1785-BCM module provides redundancy for any Programmable Controller module operating a critical function in your system. If your system requires high-speed I/O updates, the controllers support establishing an Extended-local I/O link that uses the 1771-ALX adapter module to provide fast scan and update times compared to remote I/O links. The PLC-5 series includes high-resolution isolated analog input and output modules in the N-series of PLC-5 controllers. You can use these modules to monitor your system’s parameters and have current, voltage, and temperature information available in a digital format that can be monitored on a computer or used as digital outputs for system control. Specialized modules are also available, including high-speed counter modules designed for industrial use, Thermocouple and RTD modules, and linear positioning modules for use in servo motor and hydraulic control systems. The power supply modules can be connected directly to the chassis and also support cable connections for applications with limited space. If your system involves multiple controllers and has a high current requirement, battery modules with parallel capability are also offered as part of this product line. Power supplies are available with AC and DC variants and include built-in fuses to protect your system from damage. The product lineup also includes adapters and PIC cards for connecting computers to PLC controllers with DH+ and DeviceNet networks. 1771 chassis are available in a range of sizes, allowing them to house as many modules as you require while still maintaining a small footprint. Chassis are also available with integrated power supplies and adapters for an even more compact package. If your system requires high-speed I/O updates, the controllers support establishing an Extended-local I/O link that uses the 1771-ALX adapter module to provide fast scan and update times compared to remote I/O links. The PLC-5 series includes high-resolution isolated analog input and output modules in the N-series of PLC-5 controllers. You can use these modules to monitor your system’s parameters and have current, voltage, and temperature information available in a digital format that can be monitored on a computer or used as digital outputs for system control. Specialized modules are also available, including high-speed counter modules designed for industrial use, Thermocouple and RTD modules, and linear positioning modules for use in servo motor and hydraulic control systems. The power supply modules can be connected directly to the chassis and also support cable connections for applications with limited space. If your system involves multiple controllers and has a high current requirement, battery modules with parallel capability are also offered as part of this product line. Power supplies are available with AC and DC variants and include built-in fuses to protect your system from damage. The product lineup also includes adapters and PIC cards for connecting computers to PLC-controllers with DH+ and DeviceNet networks.

PLC 5 Selection Guide

Industrialization brought about an increase in productivity and efficiency. Accordingly, many different types of programmable logic controllers (PLCs) were developed to suit every possible need. Each has its pros and cons; one well-known model from Allen Bradley is the PLC-5. The PLC-5 features are highlighted below.

PLC 5 Overview

A PLC-5 control system requires a minimum of one I/O module and Controller. The Controller requires specific communication ports. All controllers (regardless of model) come with interfaces for the included external remote I/O scanners. This makes it possible to monitor and control outlying locations without physically going there. 

Some models also come equipped with embedded internal remote I/O scanner connections. In contrast, others feature connection points through ControlNet or DeviceNet systems—giving one up to four options per type of connection when configuring one's personalized PLC-5 configuration. One needs either a 1771-SDN DeviceNet Scanner Module or 1771-ACN15 I/O Adapter Module installed on each side (remotely or locally). With either the SDN or ACN system, one can monitor and access up to sixteen separate devices simultaneously.

The PLC-5 Programmable Controller serves as the center for all Control Architectures. This powerful machine can connect systems to networks such as ControlNet, EtherNet/IP, or DeviceNet. These controllers have different inputs so that they can utilize whichever network they need for a specific application.

Features of a PLC 5 Controller

High-speed, single-slot PLC-5 controllers come equipped with many ways of processing and carrying out information. If one is looking for a controller that can handle large sequential or regulatory control apps along with unique I/O demands - the Standard PLC-5 controller can be a good option. However, if one wants to communicate using the same essential tools with other devices or interfaces, then use an Enhanced PLC-5 controller. No matter which one is chosen by the user, they all share the same impressive list of capabilities, making them all perfect!

Various PLC 5 Controllers

Enhanced PLC 5 Controllers

All Enhanced PLC-5 Controllers feature Data Highway Plus or Remote I/O ports, enabling them to communicate one-on-one with other devices. Real-time data exchange is possible, allowing operators to monitor and control all process aspects.

EtherNet PLC 5 Controllers

These controllers have been seamlessly integrated into an industry-standard EtherNet/IP system via the Ethernet PLC-5 controller, providing a versatile and open solution for every business. One can quickly do anything from production management to executive summaries of process information due to the Ethernet PLC-5 controllers' internet-friendly capabilities. These capabilities ensure that every corner of one's company is aware of what is always happening. With access to detailed diagnostics made possible by the Web server, there is no longer any need for speculation. This is supported by SNMP and DNS as well.

ControlNet PLC 5 Controllers

These controllers offer full ControlNet capabilities to control and manage automation devices. With a 5Mbps network connection, ControlNet provides reliable and consistent peer-to-peer communication and I/O access. One ControlNet Network can include many Controller units - each managing its hardware - which interact with one another for shared tasks. For example, one I/O node could provide input to multiple controllers simultaneously.

Protected PLC 5 Controllers

These controllers allow for selective guarding of controller memory and input, limiting access to critical points in programming codes and a program's accessibility. This type of protection is identifiable by its distinctive safety-yellow labeling. Use either System Administrator Rights or the appropriate Role (e.g., Plant Engineer) assigned through Programming Tools to control which users have access to which sets of areas on the system (including Communication Channels and Nodes connected via DH+, ControlNet Networks, Program Files, and Data Files, Remote Nodes). The Password Protection of other PLC-5 Controllers does not provide as high a level of security as the Protected variant; however, Extra Software explicitly designed for Clutch/Brake Applications is included with this Model from Rockwell Automation.

I/O Modules

Allen Bradley/Rockwell Automation has supplied over three million of its I/O modules to customers worldwide. There are many types of I/O module options, including block-based, modular-distributed, and chassis-based to select from. Selecting an appropriate module type might be difficult initially, but one can find guidance in the Allen Bradley I/O Module Brochure.

1771 I/O Modules

Digital, analog, and customized configurations are just a few options for the 1771 IO modules. With the help of these modules, sensors or actuators may be connected to power sources that use alternating current (AC) and direct current (DC). Up to 32 IO points per module are the maximum I/O density that users can choose. This covers all signals, from analog or output signals to direct thermocouple or RTD temperature input signals. PLC-5 controllers are compatible with the 1771 IO across local I/O, remote I/O, extended-local I/O, and ControlNet networks, so individuals may use them on whatever system they wish.

1746 I/O Modules

The 1746 I/O modules (SLC 500 I/O) provide a cost-effective remote I/O option. It is recommended to use an SLC 500 remote I/O module (1747-ASB) or ControlNet adapter module to link 1746 I/O modules directly to the PLC-5 system (1747-ACN15 or -ACNR15). Features of 1746 I/O modules include:

  • High-density point modules
  • 16-point modules
  • Removable terminal blocks

The industrial design includes Optical Isolation and Input Filtering. PLC-5 controllers support ControlNet and 1746 I/O via Remote IO.

Additional I/O Modules: Encompass Partners Program

Rockwell Automation's third-party product is referencing the program Encompass Partners. It has been created to improve the benefits of its products while also focusing on high-level technologies through new application development opportunities. These third parties can bring out features and functions not included in Rockwell Automation Products.

Network Communications

Network capability allows for quick and efficient data transmission to all devices. This includes Ethernet, control net, and device net connections - each used depending on the requirements needed.

  1. Ethernet/IP functions as a network connection if the system demands high-speed information transmission among multiple computers, an intranet connection, and program maintenance.
  2. Control Net connects to other controllers and I/O devices fast enough to handle high-speed transfers without latency or delay - whether one wants it for deterministic reliability or ease of use in maintaining programs over long distances.
  3. The DeviceNet network can be used if the system requires connections of low-level physical plant controllers instead of using other hardware bridges such as I/O modules. Additionally, the DeviceNet network is feasible when the application requires fault detection, improved data collection, reduced wiring, and less start-up time.
  4. If the system requires plant-wide and cell-level data interchange with program maintenance, use Data Highway Plus as the network connection.
  5. If the system needs connections between controllers and I/O adapters, Remote I/O as network communication is employed. A Remote I/O network connection can be used if the application requires distributed controllers, each of which has its own I/O and interacts with a supervisory controller.
  6. Use a Serial Network as a network connection if the system needs to send or receive messages with ASCII characters. When an application requires modems and SCADA, a serial network is employed as a method of network communication.

PLC 5 Ethernet Interface Module

To provide further Ethernet connection, any Enhanced PLC-5 series B or later Controller, Ethernet PLC-5 controller, or ControlNet PLC-5 controller can be fitted with the PLC-5 Ethernet Interface Module (1785-ENET), which is a single-slot module. Businesses can utilize standard Ethernet or Internet access to manage and monitor production using the Ethernet interface module's integrated communication features. Users seeking executive summaries of process information have quick access using a web browser.

ControlNet Network

ControlNet PLC-5 controllers have integrated ControlNet connection capabilities for processing information and controls. On a 5 Mbps network, the ControlNet network offers repeatable and deterministic peer-to-peer communications and I/O control. This makes it possible to have many ControlNet PLC-5 controllers on the same System Network, each of which can manage its own I/O. Even if configuration settings in the program did not previously state it, if one Controller is getting input data from an Input Device or Object Node, it would also be able to convey that data to another controller that requires this sort of data received.

DeviceNet Network

The 1771-SDN DeviceNet Scanner Module acts as an interface between DeviceNet devices and a PLC-5 Controller, allowing it to communicate with DeviceNet devices over the network to:

  • Read and write input/outputs
  • Download Configuration Data
  • Monitor the Operational Status

A single slot module can reside in either a 1771 I/O Chassis containing a PLC-5 controller, or one remotely connected via an extended local I/O link, remote I/O link, or Control Networked to said controller. The number of DeviceNet scanners is limited by the chassis size, available memory, and power supply capacity when residing in the same I/O chassis.

Serial Network

For RS-232, RS-423, or RS-422A compliant serial connection, the PLC-5 serial port may be set up. It may be used to link devices that transmit and receive ASCII characters using an ASCII terminal or printer, and/or utilize the DF1 protocol, such as communications modules, modems, programming workstations, and other serial devices.

The serial port employs the DF1 protocol when set for System mode. System Mode can be used to connect with other devices through the Serial Link.

Programs for SCADA systems can be launched on the serial port while in System Mode. Users may now monitor and control little chores via serial link connection between the locations of the master and enslaved individual. PLC BASIC modules take up a single slot in a 1771 I/O chassis, and they run via user-written BASIC and C applications. These programs enable communication between a PLC-5 Controller, 1771 Backplane, and Remote RS-232 Devices since they are not dependent on the system's PLC-5 Controller. The 1771-KE and 1771kf communication controller modules connect intelligent RS232 devices to Data Highway. Both modules provide users with the option between the Full Duplex and Half Duplex protocols for usage on the RS-232C Link. Through a Db-485 Port, the module may connect with a Remote SLC Controller or Device on the Db-485 Network.

Data Highway Plus

The Data Highway Plus (DH+) network is a robust way of connecting all company assets, whether they are located at headquarters or on the manufacturing floor. Not only does it allow one to update the machines remotely, but it also facilitates collaboration between programmers who are working with different models and locations. One of its most outstanding features is that it supports many topologies: daisy chain and trunkline dropline are two examples.

Remote I/O

The magnificence and durability of this technology are what make it such a staple in industrial automation. It provides 1771 input/output connections and supports many Rockwell Automation or 3rd-party compatible products - including simple I/O with controllers and interfaces, even complicated setups involving different types of machinery. This tool benefits businesses tremendously because they can save installation time, startup times, and maintenance costs when they use the remote data system rather than wire directly to a central I/O unit. Pass-Through enables devices on an external network like Ethernet, ControlNet, or DH+ to remotely adjust them from one location.

Browse our selection of PLC 5 units

AutomationStop.com's online catalog offers one of the largest selections of preowned PLC 5 units in the world.

1784-U2CN

The 1784-U2CN is a USB-to-ControlNet cable. Manufactured by Allen Bradley, this cable has an IP30-rated enclosure. The supply voltage of the 1784-U2CN is rated at 5.25 volts DC, while the supply current is rated at 225 milliamperes. Additionally, the isolation voltage of the 1784-U2CN is rated at 30 volts (continuous) with a basic insulation type. The USB side of the cable has a length of 2 feet (0.61 meters), while the ControlNet NAP side of the cable has a length of 10 feet (3.05 meters).

1784-U2DHP

The 1784-U2DHP is a USB-to-DH+ adapter cable. This cable is used to connect a computer to a Data Highway Plus network using a USB port. This adapter cable can also be used to connect to all PLC-5 modules, except for Classic PLC-5 processors which require a separate adapter. Data transfer speeds of up to 230.4 Kilobits per seconds are possible over 2500 foot long DH+ cables. The module also supports DH+ cables as long as 10,000 feet in length with a reduced data transfer speed of 57.6 Kilobits per second.

1784-U2DN

The 1784-U2DN is a USB-to-DeviceNet cable that allows you to connect a computer to the DeviceNet network. It is equipped with a 5-pin female DeviceNet connector. The cable offers selectable data rates including 125, 250, and 500 kilobits per second. Built-in rotary switches allow you to set the module node address.

1784-T30C

The 1784-T30C is a plant floor terminal manufactured by Allen Bradley. It has a voltage rating of 115 volts at a 60-hertz frequency. It can draw 0.7 amperes of current. This terminal operates in a single phase. It is equipped with a 12-inch color CRT display. The dimensions of the 1784-T30C measure 8.83 inches x 11.20 inches x 3.17 inches (height x width x depth).

1784-T50A

The 1784-T50A is a 20-MEG-rated operator interface terminal designed and manufactured by Allen Bradley/Rockwell Automation. It operates at a voltage ranging from 115 to 230 volts AC and a current ranging from 2.5 to 5 amperes. It has a rated frequency range of 47 to 63 hertz. This operator interface terminal is equipped with a keyboard consisting of numeric, command, and function keys.

1784-KR

Product number 1784-KR is a PC DH-485 interface module. This unit was produced by Allen Bradley. The 1784-KR allows computers compatible with IBM XT/AT to connect and communicate over the DH-485 network. The baud rates supported by this module include 300 baud, 1200 baud, 2400 baud, 4800 baud, 9600 baud, and 19200 baud. The power requirements of this product are +5 volts direct current (DC) at 1.8 amperes.

1784-T50B

Catalog number 1784-T50B is an Allen Bradley operator interface terminal. This terminal is utilized for programming purposes. This product operates via a power supply with a rated voltage of 115/230 volts alternating current (AC) at a frequency ranging from 47 to 63 hertz. Additionally, the 1784-T50B has a current rating of 5 amperes or 2.5 amperes.

1785-BCM

The 1785-BCM is a backup communication module that was designed by Allen Bradley as part of the PLC-5 series of products. This product may be mounted into a local 1771 I/O chassis. The backplane current rating of the 1785-BCM is 1.0 ampere at 5 volts direct current (DC). Additionally, the customer relay rating is 0.25 amperes at 24 volts direct current (DC). It is recommended to operate this device at a temperature range of 0 to 60 degrees Celsius.

1785-BEM

The 1785-BEM is a backup communication expansion module. This module is used to backup two of the four communications channels used by the PLC-5 processors. Supported processors include the PLC-5/40, 5/60, and 5/80 models along with the 1785-BCM Series B backup module. The module draws 0.6 amperes from the 1771 backplane.

1785-CHBM

The 1785-CHBM is a hot backup memory cartridge by Allen-Bradley.  It is compatible with the 1785-L40C15 and 1785-L80C15 modules and is mounted on a PLC-5 processor. This unit allows a PLC-5 controller with ControlNet to run in backup mode. It has a non-volatile user memory capacity of 100K words. In addition, it is a local PCI-compliant module that features an LED status indicator for diagnosis. 

1785-ENET

The 1785-ENET is an Ethernet interface module that was designed by Allen Bradley. It belongs to the PLC-5 series of products. This module communicates via the Ethernet network. The rated backplane current of this product is 2.2 amperes. Additionally, the heat dissipation rating is 37.54 BTU/hr. The approximate weight of this unit is 0.95 kilograms or 2.1 pounds.

1785-KA

The 1785-KA is a communication adapter by Allen Bradley. It draws 1.4 mA at 5 Volts DC. Its main operation is to process messages. For communication purposes, this product supports Data Highway, Data Highway Plus, and the 1784-T50 terminal. The communication rates for both Data Highway and Data Highway Plus are 57.6 kilobytes. The 1785-KA requires 1.5 amperes at 5 volts direct current (DC) to operate properly.

1785-KA3

The 1785-KA3 is a PLC-2 communication adapter module. This module can be installed in any slot of a 1771 I/O chassis, except for the leftmost slot, that interfaces PLC-2 controllers to the DH+ network. It features an interface port linking to a PLC-2 programmable controller through a DH+ processor cable. This product, at 5 volts, draws 1.2 amperes of backplane current. This module has an approximate weight of 0.3 pounds (0.1 kilograms).

1785-KA5

Allen Bradley's 1785-KA5 is a Data Highway Plus/DH485 communication adaptor module. This module allows for devices on the DH+ network to communicate with devices on the DH485 network. This unit has a power requirement of 2.0 amperes at 5 volts direct current (DC). This module is powered using a Bulletin 1771 I/O rack power supply.

1785-KE

The 1785-KE is a communications interface module for the Data Highway Plus (DH+) protocol. This module is used to connect asynchronous devices to the DH+ network. The module uses the RS-232-C interface to connect computers or industrial devices. It offers DH+ data rates of up to 57.6 kilobits per second. It can also function as a slave interface with a SCADA master device. The module draws 1.2 amperes at 5 volts DC from a 1771 I/O rack.

1785-L11B

The 1785-L11B is a PLC-5 programmable controller module. This unit offers up to 8K words of user memory and any mix of up to 512 I/O connections. This controller can handle up to four (4) Remote I/O chassis with rack 3 and supports connecting to four (4) I/O racks. It comes with one (1) Data Highway Plus port that supports adapter or scanner connections and also includes one (1) serial port.

1785-L20B

The 1785-L20B Programmable Logic Controller module features a 16K word user memory capacity and supports 512 I/O connections. It can connect with up to 12 remote I/O chassis with a limit of 4 I/O racks. The available ports of this device include one DH+ remote I/O port for adapters or scanners and one fixed DH+ port. An additional serial port is also included with support for RS-232, RS-423, and RS-422A.

1785-L20C

The 1785-L20C is a programmable controller from the PLC-5 series. It has 16K words of user memory available and can make up to 512 I/O connections with any mix. The module has an input current rating of 2.7 amperes from the backplane. It supports 12 Remote I/O devices and 3 Remote I/O racks. The module includes two DH+ ports and one serial port.

1785-L20C15

Part number The 1785-L20C15 is a ControlNet programmable controller designed by Allen Bradley. This controller communicates with other ControlNet nodes. This is done through the use of scheduled or unscheduled peer-to-peer communications. The 1785-L20C15 has a backplane current draw rating, at 5 volts DC, of 2.7 amperes. The rated heat dissipation of this controller is 54 BTU per hour.

1785-L20E

The 1785-L20E PLC-5 Ethernet module is able to connect to 12 Remote I/O chassis with 4 I/O racks. It offers two DH+ ports, one adapter/scanner port, and one fixed port. The module also has an Ethernet port, along with one serial port. It has an I/O capacity of 512 and features 16K words of memory storage.

1785-L26B

The 1785-L26B is a PLC-5/26 programmable controller from Allen Bradley/Rockwell Automation. This product has a maximum user memory of 16K words. The 1785-L26B has a total I/O maximum consisting of 512 of any mix or 512 in and 512 out (complementary). This controller is equipped with one (1) fixed DH+ port, one (1) DH+/Remote I/O port for an adapter or scanner, and one (1) serial port that is configurable for RS-232/423 and RS-422A compatible devices.

1785-L30B

The 1785-L30B is a Programmable Logic Controller (PLC) module. The connectivity options of this device include two DH+ remote I/O ports supporting adapter or scanner functions, as well as one serial port with RS-232, RS-423, and RS-422A compatibilities. The module can connect to 28 remote I/O chassis with 8 I/O racks. It has a 32K word user memory and an I/O limit of 1024.

1785-L40B

The 1785-L40B is a Programmable Controller module. It supports up to 2048 I/O connections in any mix and comes with a user memory capacity of 48K words. The module supports 60 Remote I/O chassis with 16 I/O racks. It offers four Remote I/O Adapter/Scanner ports supporting DH+ and also has a serial port with RS-232, RS-423, and RS-422A compatibility.

1785-L40C

The 1785-L40C is a PLC-5 programmable controller. This product has 48K words of user memory and it supports 2048 I/O connections with any mix. It has a remote I/O chassis limit of 60 devices and 16 remote I/O racks. The communication ports include one (1) serial port and two (2) remote I/O and DH+ ports that may be configured as adapters or scanners. The rated backplane current of the 1785-L40C is 3.3 amperes.

1785-L40C15

The 1785-L40C15 is a Phase 1.5 ControlNet PLC-5 Programmable Controller module. It is not compatible with earlier phase units operating on the same network. This module can be used to transfer data with other nodes on the ControlNet network. The module has a 48K word memory capacity and is capable of 2048 I/O connections. It offers up to 96 I/O map entries. The module can connect to 60 Remote devices with 15 I/O racks. It features two ports that support DH+ and Remote I/O, and it can be used for adapter or scanner functions.

1785-L40E

The 1785-L40E is a PLC-5 Programmable Controller that offers Ethernet connectivity. The module supports up to 2048 I/O connections and has a 48K memory capacity. Available network ports include one 15-pin Ethernet port and one 25-pin serial port supporting RS-232C, RS-423, and RS-422A. Two Data Highway Plus ports are also available with adapter or scanner functions. Up to 60 Remote I/O chassis are supported with 16 I/O racks.

1785-L40L

The 1785-L40L is a PLC-5 programmable controller featuring an extended I/O. The module has a memory capacity of 48K words and supports any mix of 2048 I/O connections. It can handle up to 60 Remote chassis with 16 I/O racks. The module has 2 DH+ and Remote I/O ports and one serial port. One extended local I/O connection is also supported. The module draws 3.3 amperes from the backplane.

1785-L46B

The 1785-L46B is an enhanced PLC-5 controller module. It offers additional security features to protect against program modification. The module has a 48k word memory capacity and can connect with up to 60 remote I/O chassis with 16 I/O racks. It has one serial port and four remote I/O ports with DH+. Any mix of 2048 I/O connections are supported.

1785-L46C15

The 1785-L46C15 ControlNet PLC-5 processor has a backplane current rating of 3.3 amperes at 5 volts direct current (DC). It has a rated heat dissipation of 59 BTU per hour, as well as an adjacent slot power dissipation rating of 10 watts maximum. The 1785-L46C15 can be installed on a 1771-A1B, 1771-A2B, 1771-A3B, 1771-A3B1, and/or 1771-A4B chassis in the leftmost slot. This processor weighs 1.45 kilograms.

1785-L60B

The 1785-L60B Programmable Logic Controller module comes with four ports for remote I/O supporting the DH+ protocol for adapter and scanner functions. One serial port is also available supporting the RS-232, RS-423, and RS-422A protocols. The module has a 64K word memory capacity and has a 3072 I/O connection limit. The module supports up to 92 remote I/O chassis with 24 I/O racks.

1785-L60C15

Product number 1785-L60C15 is a ControlNet module belonging to the PLC-5 line of products that were manufactured by Allen Bradley. This module operates on 5 volts DC, and it has a 3-ampere rated backplane current. The 1785-L60C15 is highly-sensitive to electrostatic discharge (ESD).

1785-L60L

Catalog number 1785-L60L is a processor module that was produced by Allen Bradley. It is a part of the PLC-5 series of products. This processor has a user memory capacity of 64K words. Additionally, the total I/O capacity of this unit is 3072 of any mix or 3072 in and 3072 out (complementary). This product has two (2) DH+/Remote I/O ports, one (1) serial port, and one (1) extended local I/O port.

1785-L80B

The 1785-L80B is a Programmable Controller module featuring a high-capacity 100K word memory storage. It can connect to 92 remote I/O chassis with 24 I/O racks and supports up to 3072 connections in any mix. The module has one (1) serial port and four (4) remote I/O ports that support the DH+ protocol and can function as adapter or scanner connections.

1785-L80C

Part number 1785-L80C is an Allen Bradley ControlNet programmable controller. It is from the PLC-5 line of products. This product has a 100K word user memory. It can be mounted on a 1771 I/O chassis that manages field device procedures. The 1785-L80C has an I/O capacity of 3072 maximum. At 5 volts DC, this unit has a backplane current load rated at 3.3 amperes.

1785-L80C15

The 1785-L80C15 is a PLC-5 programmable controller module that is compatible with ControlNet. This device has a high-capacity 100K word user memory. It also supports up to 3072 I/O connections of any mix. It comes with one serial port and two ports for DH+ or Remote I/O connections in adapter or scanner modes. The processor supports a maximum of 92 Remote I/O devices with 23 I/O racks.

1785-L80E

The 1785-L80E is a Programmable Controller module. It offers a high memory capacity of 100K words and supports 3072 I/O connections. Up to 65 I/O chassis can be connected with 24 I/O racks. The module has one Ethernet port and one serial port. Two DH+ ports are also provided for connecting the adapter or scanner Remote I/O.

1785-L86B

Catalog number 1785-L86B is an enhanced controller that was manufactured by Allen Bradley as part of the PLC-5 series of products. It takes up a single slot on a 1771 I/O chassis and has a total I/O capacity of 3072. It controls the procedures of field devices and data processing. This enhanced controller uses a 100K word SRAM memory to process I/O data. Additionally, it can accept 93 I/O chassis links, each with 32 remote chassis.

1785-LT

Designed and manufactured by Allen-Bradley, the 1785-LT is a PLC 5/15 processor from the wider family of original PLC-5 controllers. The 1785-LT has 6K words of built-in memory that can be expanded to 14K words. This device also has an optional memory module with 4K RAM. This product may be installed on a 1771 I/O chassis in the left-most slot.

1785-LT2

The 1785-LT2 is a PLC-5 programmable controller module. It features 13K words of user memory that is expandable to up to 21K words. This module can connect to any mix of up to 1024 I/O connections. It has a typical scan time of 8 milliseconds and a remote I/O scan time of 10 milliseconds at 57.6 kilobits per second. The maximum number of supported remote chassis is 16 with 8 I/O racks. The module has one DH+ and one Remote I/O port, and it draws 2.5 amperes from the backplane.

1785-LT3

Manufactured by Allen Bradley, the 1785-LT3 processor module has a maximum user memory capacity of 6K words and an EEPROM memory capacity of 8K words. Additionally, the maximum analog I/O of this device is 256. The discrete logic program scan time of the 1785-LT3 is 2 milliseconds, while the typical program scan time is 8 milliseconds.

1785-M100

Manufactured by Allen Bradley, the 1785-M100 is a 64K memory PLC-5 memory module. The 1785-M100 includes EEPROM, as well as a user-modifiable ROM, that may be wiped and reprogrammed repeatedly. The backplane current requirement for this module is 2.5 amperes at 5 volts DC.

1785-ME16

The 1785-ME16 is an Allen Bradley EEPROM memory module. This product stores backup data for several PLC units. It has a removable, non-volatile memory capacity of 16K words. Also, it features a removable jumper on the module's side that provides writing protection. This memory module works at temperatures ranging from 0 to 60 °C. Its current backplane rating is 2.5 amperes at 5 volts DC.

1785-ME32

The 785-ME32 is a standard memory module by Allen Bradley. It belongs to the PLC-5 series of products. The user memory capacity of this module is a maximum of 32K words. It is a ROM module that can be erased and programmed with small quantities of data numerous times. The 1785-ME32 has an approximate weight of 70.875 grams or 2.5 ounces.

1785-ME64

The 1785-ME64 is a memory module used with enhanced PLC-5 controllers. The module is used to provide backup memory that can save data in case the controller experiences loss of power. The 1785-ME64 features an EEPROM memory capacity of 64K words.

1785-MJ

The 1785-MJ is an EEPROM memory module. It is part of the PLC-5 line of products manufactured by Allen Bradley. This module has a memory capacity of 8K words and is nonvolatile. The physical dimensions of the 1785-MJ measure 43.9 millimeters x 55.4 millimeters x 17.4 millimeters (height x length x depth). This memory module has a recommended operating temperature ranging from 0 °C to 60 °C.

1785-MK

The 1785-MK is a memory module that is compatible with PLC-5 and PLC-2/17 programmable controllers. This module has a storage capacity of 16K words and has a non-volatile EEPROM type of data storage.

1785-MS

The 1785-MS is a CMOS/RAM memory module made by Allen Bradley. This unit belongs to the PLC-5 product series. The 1785-MS can operate with PLC-5/15 and -5/25 devices. The memory capacity of this unit is 8,000 words. It can be mounted on an I/O rack and operated at a temperature ranging from 0 to 60 degrees Celsius.

1785-RC

Catalog number 1785-RC is an EEPROM relay memory cartridge. This product, which was produced by Allen Bradley, belongs to the PLC-5 line of products. The backplane current rating of this device is 0.2 amperes at a rated voltage of 5 volts direct current (DC). This product has one (1) normally open (NO) 120-volt AC relay contact.

1785-TR10B2

Product number 1785-TR10B2 is a thin-wire transceiver that was produced by Allen Bradley. This unit has an operating voltage rated at +12 volts with a current consumption rating of 50 milliamperes. This transceiver is used to connect a controller to the Ethernet network. The dimensions of this product measure 22 millimeters x 44 millimeters x 100 millimeters (height x width x depth). Additionally, it has an approximate weight of 130 grams.

1785-TR10BT

Catalog number 1785-TR10BT is a twisted pair transceiver from Allen Bradley. This device has an operating voltage that ranges from -10 volts to +16 volts. Additionally, it has a rated current consumption of 50 milliamperes at +12 volts. The bit rate of the 1785-TR10BT is 10 Megabits per second (Mbps).
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