I am looking for a converter/translator that will convert Profibus to Modbus TCP. Specifically, I need to read data from several Siemens PLCs (which are networked together via Profibus), and all I have is a Modbus driver (it can read data via Modbus serial OR Modbus TCP - Ethernet). I assume this is some type of protocol converter. Also, I am NOT allowed to touch the existing Siemens PLCs; the converter has to stand alone (the Siemens PLC programs can NOT be touched). So, this device would poll the PLCs via Profibus and make the data available in a Modbus TCP server. Any ideas?

 

ProSoft Technology has what you are looking for, a stand alone unit, Profibus master to Modbus TCP. Model# 4204-PDPM-MNET. http://www.prosoft-technology.com or http://www.prolinxgateways.com. I have used this and many other of there products. Works well...

Best regards,

Michael E. Crossman
PLCs Plus International, Inc.
http://www.bkppi.com

 

There are already many posted messages on this issue. Go directly to this link.

http://www.control.com/1026182804/index_html#1026182937

There are more than two hundred messages on MODBUS in less than a month. This is quite a big figure, saying a lot abouth this forum.