Reading out the current measuring data via the serial interface RS232/RS485 is not possible
Do the interface parameters (log, baud rate, data format, device address, etc.) in the communication server program JUMO PCC correspond with the settings in the Logoscreen 500cf?
If necessary, refer to the operating manual, chapter 4.2.10 (Configuration - Interface).
Is the connection, interface type (RS232/RS485) and connection, correct?
For the RS485, an additional external interface converter to RS232 or USB is often required for connection to a PC.