three COM ports [...] 23S17 Port Expander Chip [...] an application where a port
for you. Set the port. The default port 4840 is the recommended port for OPC UA
CODESYS Development System
, the programming ports [...] (mostly UDP ports 1740..1743 and TCP ports 1217 +
addresses and ports [...] addresses and ports [...] addresses and ports
is that you have configured the peer ports
to access the serial port
"), which is connected to the USB port