MicroLogix 1400 System

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MicroLogix 1400 Controllers

Introduction Product Design Communication Specifications
Communication

The MicroLogix 1400 controllers provide an isolated RS-232C/RS-485 port, an RJ45 Ethernet port, and a non-isolated RS-232C port. The ports can be used for the following types of communication.

Communication Description
Communication channel 0
Isolated RS-232C and RS-485 electrical compatibility (on separate pins) 		• Use the RS-485 cable (1763-NC01) to interface directly to RS-485 networks.
• DF1 full-duplex, DF1 half-duplex master and slave, DF1 radio modem.
• DH-485; If you use RS-232C port and existing cables, an Advanced Interface Converter (1761-NET-AIC) and external power is required for networking. DH-485 is also supported directly using the RS-485 cable (1763-NC01) on this port.
• Modbus RTU master and RTU slave; If you use RS-232C port and existing cables, an Advanced Interface Converter (1761-NET-AIC) and external power is required for networking. Modbus RTU networking is also supported directly using the RS-485 cable (1763-NC01) on this port.
• DNP3 slave.
• ASCII.
Communication channel 1
RJ45 port supports EtherNet/IP for peer-to-peer messaging

 • 10/100 Mbps port with support for BOOTP, DHCP, and SNMP capability directly from the controller.
• Automatically assign IP address through DHCP or BOOTP, or configure using RSLogix 500 programming software.
• Monitor your IP address through the LCD Display (or use the write-on nameplate).
• Supports CIP as well as DNP3 over IP and Modbus TCP/IP.
• Allows controllers to exchange data with other controllers through messaging; does not support scanning of I/O on Ethernet adapters.
Communication channel 2
Non-isolated RS-232C port 		• DF1 full-duplex, DF1 half-duplex master and slave, DF1 radio modem.
• DH-485; an Advanced Interface Converter (1761-NET-AIC) and external power is required for networking.
• Modbus RTU master and RTU slave; an Advanced Interface Converter (1761-NET-AIC) and external power is required for networking.
• DNP3 slave.
• ASCII.