BMXERT1604T/H Device DDT

Overview

The Device DDT is predefined DDT that describes the I/O language elements of the I/O module. This data type is presented in a structure which provides bits and register view.

This topic describes the structure of the implicit and explicit structures for the BMXERT1604T/H module.

Implicit Device DDTs

The following table shows the structure of the T_M_DIS_ERT implicit device DDT:

Standard Symbol	Type	Access	Meaning
MOD_HEALTH	BOOL	R	Function type 0: the module has a detected error 1: the module is operating correctly
MOD_FLT	BYTE	R	Module internal detected errors byte
ERT_SYNC	T_M_TIME_SYNC_ERT	See detailed structure in the table below.
ERT_CH	ARRAY [0...15] of T_M_DIS_ERT_CH	See detailed structure in the table below

The following table shows the structure of T_M_TIME_SYNC_ERT:

Standard Symbol	Type	Access	Meaning
TS_TIME_STAMP_RECORDS	UINT	R	Current events number in buffer
TS_DIAGNOSTIC_FLAGS	WORD	R	Event buffer flags
TIME_VALID	BOOL	R	Time OK and synchronized
CLOCK_FAILURE	BOOL	R	Same as ClockFailure indication in the TimeQuality
CLOCK_NOT_SYNC	BOOL	R	Same as ClockNotSynchronized in the TimeQuality
BUFF_FULL	BOOL	R	Buffer full
UMAS_COM_ERR	BOOL	R	UMAS communicator
DECHATTER_ACT_0	BOOL	R	Dechatter active on channels 0...3
DECHATTER_ACT_1	BOOL	R	Dechatter active on channels 4...7
DECHATTER_ACT_2	BOOL	R	Dechatter active on channels 8...11
DECHATTER_ACT_3	BOOL	R	Dechatter active on channels 12...15
TS_BUF_FILLED_PCTAGE	BYTE	R	Percentage of the buffer filled (0...100)
TS_EVENTS_STATE	BYTE	R	Main state of the TS events service (debug purpose)
SOE_UNCERTAIN	BOOL	R	SOE uncertain variable
CLR_EVT_BUF	EBOOL	R/W	Clear event buffer NOTE: Only available for applicative time stamping mode.

The following table shows the structure of T_M_DIS_ERT_CH:

Standard Symbol	Type	Access	Meaning
FCT_TYPE	WORD	R	Function type 0: Discrete Input 1: Counter 2: Time Stamping
CH_HEALTH	BOOL	R	Channel health
DIS_VALUE	EBOOL	R	Discrete value
CNT_VALUE	UDINT	R	Counting value for channel [4..15] (Not usable for channel [0..3])
CLR_CNT	EBOOL	R/W	Clear counter value for channel [4..15] (Not usable for channel [0..3])

DDT for Explicit Exchanges

Optional explicit DDT types are proposed in the data editor to support Status or Command data used by explicit exchanges on a channel of an IO module in device DDT data model. Explicit DDT instances are created manually by the user in the data editor and used as Output parameter with the function block managing the explicit exchange (READ_STS_QX).

The following table shows the meaning of T_M_DIS_ERT_CH_STS explicit DDT:

Explicit DDT type	Standard Symbol	Type	Access	Meaning
T_M_DIS_ERT_CH_STS	CH_FLT	INT	R	Standard channel errors
	EXT_PWS_FLT	BOOL	R	External power supply error
	INTERNAL_FLT	BOOL	R	Inoperable channel or module missing
	CONF_FLT	BOOL	R	Hardware or software configuration detected error
	COM_FLT	BOOL	R	Communication error with PLC