Fail the Connect to HELMHOLZ NETLink PRO Compact gateway
I have been using Snap7 for several years and with fairly recent SIEMENS S7300, S71500 PLCs connected, even directly, via ethernet cable, I have never had any problems. I happened to have to communicate with an old S7300 CPU without an ethernet port. We therefore decided to use the NETLink PRO Compact gateway from HELHOLS, a SIEMENS accredited partner. There was no way to connect to the PLC! With the same test application, created with Delphi 11.1 Alexandria and which uses Snap7, we connected directly...