W&T added a new operation mode to the Com-Server++, making it a Gateway between a serial Modbus/RTU device and a Modbus/TCP master in the network.
Many devices such as energy meters, measuring transducers, power inverters etc. have an RS232/422/485 interface and communicate via the Modbus/RTU protocol. The Com-Server integrates these devices quickly and reliably into Modbus/TCP environments.
Com-Servers provide serial interfaces over the network. The devices are suitable for top-hat rail mount and are powered via PoE or a power supply.
- Virtual COM port
With the virtual COM port you can use serial devices in the network as if they were connected directly to your computer – even from virtual environments. - Cross-location serial communication lines
In Box-2-Box mode you tunnel your serial data, TLS encrypted if desired, over the network. - Individual data access
using various network protocols on the application layer, via TCP socket as client and server or as UDP peer.
Application Examples:
– Via Com-Server onto S7-PPI network:
Up- and downloading of controller programs as well as status monitoring are handled with the Siemens S7-200 using the PPI interface. Connection to the PC used as a programming device is frequently implemented using the RS232/PPI Multi-Master cable. To extend this connection to a physically remote computer or to access from different work stations, a special serial cable with line drivers and if necessary a manual switcher generally needs to be installed. Alternative use of an Ethernet CP would necessitate modifying the S7 project/program file. In addition, each individual PLC would needs its own CP. Use of a Com-Server on the other hand provides a simple solution that works without any modifications to the controller program and usually eliminates any cabling expense…
– Accessing several serial terminal devices over one IP address? IP masquerade makes this possible!
With the growing importance of the Internet, it has become a wish of many companies to make serial terminal devices available in both the intranet and on the Internet, e.g. for remote maintenance and diagnosis. This is possible by means of a Com-Server.
The solution is NAT (Network Address Translation). NAT-capable routers are able to use the limited resources of official network addresses in a more sustainable way by representing a complete intranet with various stations over only one official IP address.
LEARN more about other possible applications…
