Details of the Explicit Exchange Objects of T_COM_ASI

At a Glance

The explicit exchange objects of T_COM_ASI_STD type IODDTs that apply to the AS-Interface bus are introduced. It concerns those word type objects whose bits have a particular meaning.

Example of declaration of a variable: IODDT_VAR1 of type T_COM_ASI_STD

NOTE: The meaning of a bit is generally given for the status of the bit when set to 1. In specific cases an explanation is given for each status of the bit.

NOTE: Not all bits are used.

Execution indicators for an explicit exchange: EXCH_STS

The table below shows the meaning of channel exchange control bits EXCH_STS (%MWr.m.0.0):

Standard symbol	Type	Access	Meaning	Address
STS_IN_PROGR	BOOL	R	Status parameter read in progress.	%MWr.m.0.0.0
CMD_IN_PROGR	BOOL	R	Command parameters exchange in progress.	%MWr.m.0.0.1
ADJ_IN_PROGR	BOOL	R	Adjust parameters exchange in progress.	%MWr.m.0.0.2

Explicit exchange report: EXCH_RPT

The table below shows the meaning of the exchange report bits EXCH_RPT (%MWr.m.0.1):

Standard symbol	Type	Access	Meaning	Address
STS_ERR	BOOL	R	Detected error during channel status words read.	%MWr.m.0.1.0
CMD_ERR	BOOL	R	Detected error during command parameter exchange.	%MWr.m.0.1.1
ADJ_ERR	BOOL	R	Detected error during adjust parameter exchange.	%MWr.m.0.1.2

Standard Channel Detected Errors, CH_FLT

The table below shows the meanings of the bits of the CH_FLT (%MWr.m.0.2) status word. Reading is done via a READ_STS (IODDT_VAR1).

Standard symbol	Type	Access	Meaning	Address
SLAVE_FLT	BOOL	R	Detected error in one or more devices.	%MWr.m.0.2.1
ASI_CONF_FLT	BOOL	R	Physical configuration different from software configuration.	%MWr.m.0.2.3
INTERNAL_FLT	BOOL	R	Detected internal error or channel self-test.	%MWr.m.0.2.4
CONF_FLT	BOOL	R	Detected hardware or software configuration error.	%MWr.m.0.2.5
COM_FLT	BOOL	R	Problem communicating with the PLC.	%MWr.m.0.2.6
APPLI_FLT	BOOL	R	Detected error in application (adjustment or configuration).	%MWr.m.0.2.7

Specific status AS-Interface

The table below presents the meanings of the (%MWr.m.0.3) status word bits (%MWr.m.0.2). Reading is done via a READ_STS(IODDT_VAR1).

Standard symbol	Type	Access	Meaning	Address
ASI_SUPPLY_FLT	BOOL	R	Detected AS-Interface power supply error.	%MWr.m.0.3.6