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ModBus/TCP is hanging up... connectivity: Linux RedHat 6 -> 10/100 workgroup data switch -> Campbell Scientific CR-6 (ModBusSlave, port 502)
There is a host server plugged into the switch also... it is not supposed to be actively involved in the ModBus transaction... however, when disconnected, ModBus hangs... Linux has static IP as does the CR-6... tried DataGram w/ TCPOpen, no joy... ping works always... ModBus usually restarts in <60s after the host server is reconnected, with no error reported... once, got a 'broken pipe' error... any clues available?
There is a host server plugged into the switch also... it is not supposed to be actively involved in the ModBus transaction... however, when disconnected, ModBus hangs... Linux has static IP as does the CR-6... tried DataGram w/ TCPOpen, no joy... ping works always... ModBus usually restarts in <60s after the host server is reconnected, with no error reported... once, got a 'broken pipe' error... any clues available?