GetFBusStatus

GetFBusStatus 1:

The PLC Controller can be connected to a fieldbus as a participating device. The status of the fieldbus can be determined with the function "GetFBusStatus".

FUNCTION GetFBusStatus : WORD

VAR_INPUT

VAR_INPUT
    bDummy  : BOOL
END_VAR

At least one input is required for functions.

The fieldbus status is encoded in the return parameter as follows:

Controller type	Value	Description
BC2000	0	Fieldbus OK
	Bit 0 set	Fieldbus errors
	Bit 1 - 15	reserved
BC3100	0	Fieldbus OK
	Bit 0 set	Fieldbus errors
	Bit 1 - 3	reserved
	Bit 4 - 5	DP-State: 0: Slave in WAIT-PRM (no connection to master) 1: Slave in WAIT-CFG (start-up) 2: Slave in DATA-EXCH (OK)
	Bit 6 - 7	WD-State: 0: Baud rate is searched 1: Baud rate found 2: Communication monitoring activated
	Bit 8 - 11	Baud rate: 0: 12 Mbaud 1: 6 Mbaud 2: 3 Mbaud 3: 1.5 Mbaud 4: 500 kbaud 5: 187.5 kbaud 6: 93.75 kbaud 7: 45.45 kbaud 8: 19.2 kbaud 9: 9.6 kbaud
	Bit 12 - 15	reserved
BC9000	Bit 0 set	Error in AMS/ADS communication
	Bit 1 set	Error MODBUS/TCP
	Bit 2 - 14	reserved
	Bit 15 set	No LINK (no communication with the fieldbus)

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT v2.7.0 and above	BCxxxx (165)	PlcSystemBC.Lb6