Create a COM Port Object

#Firmware/v310

cpo = serial.port(n)

Attempts to create and acquire a COM port object on the COM port n.

  • cpo will be nil if the port cannot be created and acquired. (e.g. if it's already in use)
Warning

The COM port n cannot be used in the regular Collector or Delivery settings.
It must be 'unused'.

Note

When the COM port is being used by a COM Port Object, there are Lua mechanisms to simulate the web status page - e.g. for Modbus or SDI-12.