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MicroLogix 1200 Controllers
MicroLogix 1200 Controllers
Communication
MicroLogix 1200 controllers provide a built-in RS-232-C port. MicroLogix 1200R controllers provide an additional built-in RS-232-C port that supports DF1 Full Duplex protocol only. This second port lets you connect the controller to a computer running RSLogix 500 programming software or connect to an HMI device, such as a PanelView display, without removing the existing connection or requiring a network connection. The Channel 0 communication port available on all MicroLogix 1200 and 1200R controllers can be used for the following types of communication:
- RS-232-C—The built-in Channel 0 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.
- DeviceNet—You can connect the controller 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, and program upload/download capability.
- EtherNet/IP—You can connect the 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.
- DH-485—You can connect the controller 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.
- Modbus RTU slave and new Modbus master functionality available.
- 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. For more information see the MicroLogix 1200 Document Update, publication 1762-DU002 or the Instruction Set Reference Manual 1762-RM001.
