Siemens LOGO! Ethernet Connection Guide

Overview of Siemens LOGO! Ethernet Connectivity

This guide provides instructions for establishing Ethernet communication between Siemens LOGO! programmable relays and HMI devices. The supported series include LOGO! 0BA0, 0BA1, 0BA2, 0BA7, and 0BA8 models. Proper configuration ensures reliable data exchange and multi-connection capabilities.

HMI and PLC Communication Settings

To establish a successful connection, specific parameters must be configured in the HMI software. The PLC type should be set to Siemens LOGO (Ethernet) using the Ethernet interface on port 102. The PLC station number is typically set to 1, with a valid range of 1 to 99. A critical aspect of the configuration is the TSAP (Transport Service Access Point) setting. The Local TSAP must be set to a value greater than 1000, while the Remote TSAP should be configured within the range of 2000 to 2700. For the 0BA2 model, ensure that the S7 access service is enabled to allow proper communication.

Configuring LOGO! Soft Comfort Software

Multi-connection settings require the use of LOGO! Soft Comfort software. Begin by navigating to the Tools menu and selecting Ethernet Connections. Right-click on the Ethernet Connections node and select Add connections to create a new link. The system allows for up to eight simultaneous connections. Once a connection is added, double-click it to configure it as a Server Connection. It is essential to tick the Accept all connection requests option to allow the PLC to communicate with any IP address. The Remote TSAP should be set to 10.00 for these connections.

Device Address Mapping

The guide includes detailed address mapping tables for different LOGO! models. These tables define the relationship between device types (such as Inputs, Outputs, Markers, and Analog values) and their corresponding VM (Variable Memory) addresses. For instance, the 0BA7 model uses specific mapping for I, Q, M, AI, AQ, and AM types. Similarly, the 0BA0 and 0BA8 models follow a structured byte-range mapping. Users should refer to these tables to ensure that the HMI correctly reads and writes data to the appropriate PLC memory locations. Always ensure that the Local and Remote TSAP values are set oppositely in the EasyBuilder software to maintain communication integrity.