Hello everyone, good day!

I have a question to a LOGO and TDE.

i want to know if it's possible in siemens PLC LOGO and TDE HMI

we have both IP addresses on siemens PLC LOGO and TDE HMI we are trying to communicate it with 1 IP address.

however, we are receiving in 2 IP addresses in both PLC LOGO and TDE HMI

how can we configure this communication with 1 IP address.

Thank you for your answers.

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Split from How to connect TDE to a LOGO in Network.

hi!

in logo and TDE they have both Ip addresses, in this case we are using Modbus TCP to monitor the devices 

however, we don't have enough ip address to assign in logo and TDE, so i am asking if it's possible to 

configure the communication with 1 ip address to be used in the device to monitor the system?

please advise thank you.

I am guessing that the installation site dictated which IP addresses are available to you. Consider that the field instruments (Modbus/TCP devices) may be on another network. Speak to the person involved on the layout of the network about that.

Rough example:

           IP         MASK
LOGO:   10.1.50.30  255.255.0.0
TDE:    10.1.50.31  255.255.255.0
Other:  10.1.10.xx  255.255.0.0

Or..

Get a proper network switch that allows only the PLC to connect to the field devices. The outside network is blocked from connecting to the devices. Therefor the devices can be the IP addresses that suits you and is outside the prescribed range.

hi, 

yes, you are correct site communication are dictating the IP addresses.

thank you for your positive advice its highly appreciated.

thank you.