EA3020 TCP/IP modbus communication
I have problem with EA3020 gas analyzer,
In instruction there is written
"Communication between the gas analyzer and the computer is executed
via an Ethernet connection ..." and " The Ethernet connection enables communication
for reading the measured values and for calibrating and controlling
the gas analyzer via the Modbus TCP/IP protocol"
So, i connect analyzer and PC via ethernet cable and then ping connection (it's ok).
Then i tried, ETC.exe apps and it worked too. But when i tried to use Modbus TCP/IP connection i've got an error (connection refused by the device). I sniffed the network communication with WireShark and see that the analyzer reset conection ("ACK RST") after apps try to establish it.
In my opinion, Modbus via etherent should be available without any additional modules.
Maybe I have to activate something or config something more than IP, netmask?
Check next link:
for detailed information open document "EasyLine EL3000 Series Modbus" from posted link.