Steve_D
Member
Hi guys, looking for a bit of clarification here as Ethernet IP, Ethernet TCP/ip, Modbus TCP/ip seem to be interchangeable and Id like some input as to the accuracy of what I am about to say.
Ethernet IP is an ethernet protocol for mostly process equipment, i.e remote bases, VSDs etc which would require an specific ethernet IP card and third party network configuration. yes?/No?
Ethernet TCP/ip is your ordinary ethernet comms to power meters, analysers etc that have a TCP/IP connection point which you would get by connecting an ethernet port on your PLC rack to the network (and then to the device)yes?/No?
Modbus TCP/IP is a protocol on the ethernet TCP/IP system which allows you to map in data from the ethenet device as you sort of would with modbus serial but on an ethernet network. Yes? No?
Question 1, If I have a power meter with an ethernet port (it doesnt say what sort of ethernet comms so I assume its not modbus tcp/ip) that is clearly designed for a web browser connection, will I be able to connect this to my PLC ethernet card and somehow read the values into my PLC?
Apparently my PLC can handle "socket" data handling which sets up comms to ethernet devices like this but im not sure whether the device can handle socket comms, or is this ALWAYS the case for ethernet devices?
Quetsion 2, if a device is ethernet TCP/ip but doesnt specifically say modbus TCP/ip can I read the data out of it?
Really happy to be shown right or wrong.
Ethernet IP is an ethernet protocol for mostly process equipment, i.e remote bases, VSDs etc which would require an specific ethernet IP card and third party network configuration. yes?/No?
Ethernet TCP/ip is your ordinary ethernet comms to power meters, analysers etc that have a TCP/IP connection point which you would get by connecting an ethernet port on your PLC rack to the network (and then to the device)yes?/No?
Modbus TCP/IP is a protocol on the ethernet TCP/IP system which allows you to map in data from the ethenet device as you sort of would with modbus serial but on an ethernet network. Yes? No?
Question 1, If I have a power meter with an ethernet port (it doesnt say what sort of ethernet comms so I assume its not modbus tcp/ip) that is clearly designed for a web browser connection, will I be able to connect this to my PLC ethernet card and somehow read the values into my PLC?
Apparently my PLC can handle "socket" data handling which sets up comms to ethernet devices like this but im not sure whether the device can handle socket comms, or is this ALWAYS the case for ethernet devices?
Quetsion 2, if a device is ethernet TCP/ip but doesnt specifically say modbus TCP/ip can I read the data out of it?
Really happy to be shown right or wrong.