We are able to communicate with the engineering station to a INIET800. We are able to read the license and use composer. We take the same cable to connect the primary harmony connect but the system is not able to communicate with it. We are able to ping the address. The harmony connect network card seems to be configured as the engineering. With the Harmony Configuration Tool, we get an error -1 No response from CIU and if we try to enter an invalid ip address, we have a different message meaning that the IP address is good. Any idea ?
What type of HMI and what version are you running? Have you setup the "global network adapter parameter tuning" correctly for that server? Note a reboot of server is needed/recommended after changing this setting.