Catalogs > Automation Systems Catalog > Programmable Controllers > MicroLogix 1500 System > System Overview
System Overview
| Introduction |  |
System Components | |
Product Design | |
Communication | |
Typical Configurations | |
General Specifications | |
Additional Resources | |
RS-232-C—The built-in RS-232-C port supports DF1 full-duplex, DF1 half-duplex slave, new DH1 half-duplex master, DH-485, Modbus RTU slave and new Modbus RTU master protocols, report-by-exception, and peer-to-peer data exchange. This port can be used for direct connection of programming and operator interface devices (e.g. a personal computer), and supports dial-in remote programming.
ASCII—A full ASCII command set for the RS-232-C port allows read and write with ASCII devices.
Modbus—Through its RS-232-C port, use a MicroLogix 1500 system as a smart RTU slave in an existing SCADA network (Modbus master available late 2003).
DH-485—You can connect the MicroLogix 1500 controller RS-232-C port to a DH-485 network through an Advanced Interface Converter (catalog number 1761-NET-AIC). The DH-485 network may connect up to 32 devices. The communication port provides for program upload and download.
New DF1 Radio Modem protocol—You can transmit data through DF1 Radio Modem protocol, an efficient way to transmit data. Each read/write transaction requires only one TX from initiator and one TX from the responder, so “key-ups” and power consumption are minimized.
DeviceNet—You can connect the MicroLogix 1500 controller RS-232-C port to a DeviceNet network of up to 64 devices through a DeviceNet Interface (catalog number 1761-NET-DNI). The DeviceNet Interface provides slave I/O, peer-to-peer, COS (change-of-state), and program upload/download capability. The MicroLogix 1500 processor supports backplane messaging, which allows the processor to read or write data to other devices on DeviceNet. Finally, you can also use the 1769-SDN Device Net Scanner for DeviceNet master capabilities including messaging, program upload/download and monitoring.
EtherNet/IP—You can connect the MicroLogix 1500 controller to an EtherNet/IP network through an EtherNet/IP-to-RS-232-C interface (catalog number 1761-NET-ENI). This module supports program monitoring and upload/download, data collection, and controller peer-to-peer communication. It can also send e-mail messages via SMTP and display status and configuration information through a built-in Internet server.
Operator interfaces—Many Allen-Bradley operator interface products can be used with MicroLogix 1200 controllers. The PanelView 300 Micro operator interface is a small, low cost, easy-to-use operator interface that is designed for use with the MicroLogix 1200 controller.
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For more information see the MicroLogix 1500 Document Update, publication 1764-DU002A-EN-P.