The Modbus Slave I/O interface allows connecting with Modbus slave(s) to exchange coil and register data. Using a standard network interface card, this protocol can be easily and rapidly integrated into any simulation model. With the proper user configuration, a driver is initialized on the target simulator at the start of the simulation and instantiates multiple slaves to which masters can connect and send read/write commands. The Modbus slave interface can operate over TCP/IP using an Ethernet physical link or over RTU using a serial link.
This driver provides an asynchronous TCP/IP communication interface and an IP aliasing mechanism allowing to assign different IP addresses to each slave/outstation instance even if a single physical network interface (i.e., ethernet port) is used.
Modbus is a data communications protocol originally published by Modicon (now Schneider Electric) in 1979 for use with its programmable logic controllers (PLCs). Modbus has become a de facto standard communication protocol and is now a commonly available means of connecting industrial electronic devices. It is widely used for Industrial Automation and Energy system applications.
Visit the communication protocols product reference guide to learn more about the communication protocols, including product lists, and to access user documentation.