Hi,
I would like to have some informations and help about communication between Siemens S7-300 and LabView.
I'm realizing a LabView panel to supervise a remote system and to do this I'm using the NI Industrial Automation OPC Server. I have to connect this panel to the PLC via modem.
I entered all data required but I always receive the message "Unexpected response from PLC" that means,according to the online help, that a response was received from the PLC but it was not the response expected according to the protocol: what does it means?Could someone tell me a suggestion to solve this problem?
Thank You very much
