Technical FAQs

Ask a Question

Why the NVLs are not working in the Ethernet port 2 of my TM251

The NVLs (global network variables) will work in the Ethernet port 2 of the M251 only if the ethernet port 1 status is "Data Exchange"
Ethernet port 1 is in "Data eEchange" when the ethernet cable is conected and the PLC has a valid IP address

Note: You can check the status of the ETH port 1 using the system variable PLC_GVL.ETH_R.i_wPortALinkStatus
Was this helpful?
What can we do to improve the information ?