Diagnostics

It is possible to read the diagnostic data in the Bus Terminal Controller. This information is located in the flags area.

Flag byte	Meaning
%MB4092-4093	Bit 0	ADS communication watchdog
	Bit 1	ModbusTCP communication watchdog
	Bit 1 … 14	reserved
	Bit 15	No connection to switch: The Link LED does not light up (the transfer of this error information is disabled in delivery state. To enable it, set register 25 in table 100 to 1_bin).
%MB4094-4095	Bit 0	K-bus error
	Bit 1	Configuration error
	Bit 2	K-bus cycle time exceeded (see table 1, register 17)
	Bit 3 … 15	reserved