Communicate PCI NI PROFIBUS with PC(master) and PLC S7-200(slave)

[AlanSinuhe05]

It consists in communicating through the RS-485 cable, a PC (master) and PLC (slave), I have the NI POFIBUS PCI card, but in which step I indicate that I want to use my PC as a master?

[a_clucker · Accepted solution]

Hi Alan,

If you haven't found this tutorial already, I highly recommend it: https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000YFeYCAW&l=en-US - especially section 5, "PROFIBUS-DP Master Configuration".

Downloading the configuration to the PCI card in the Configurator is the first time the card knows the network layout (and its place as the master). You indicate which device is the master when you create this configuration in the Configurator software.

I also recommend using the LabVIEW example to get started / debug - it's in the function palette under Industrial Communications >> Kunbus >> PROFIBUS >> Master >> Example.