PLC Siemens S7-1200 and TIA Portal - Change IP address
I'm having a strange problem with TIA Portal and S7-1200 Siemens PLC.
I need to change the IP address of PLC, but I have not TIA Portal project of the machine. I tried using Online access > Diagnostic > Functions > Assign IP Address but TIA Portal says "the IP address could not be assigned".
The IP has to be changed from 192.168.50.xyz to 192.168.40.xyz
Tia version is v17 both on PLC and pc.
What I checked:
- I can ping the PLC;
- I can view program blocks in PLC;
- I can start / stop the PLC.
Any help would be appreciated.
You can use all the tools to initially set the IP address. But once set, things change; the function of the various tools becomes dependent on the value of this setting in the program running on the PLC:
Using Online access > Diagnostic > Functions > Assign IP Address or Proneta
Based on my experience.
If "Set IP address in the project" was selected, you can't change the IP address.
If "IP address is set directly at the device" is selected, I don't know what happens.
Using SIMATIC Automation Tool
(you can obtain a trial version here: Simatic Automation Tool)
According to the documentation (section 3.1): if "Set IP address in the project" was selected, you can assign a temporary address until the CPU is next power cycled. If "IP address is set directly at the device," you can permanently change the IP address.
By upload and download
If none of the above options will work, you can upload the PLC project using Online\Upload Station as a New Device (Hardware and Software), modify the IP address and download just the hardware configuration. I won't get into the details of this, but beware of networked IO and TIA portal versions.
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