Details of IODDT Explicit Exchange Objects of Type T_COM_STS

At a Glance

This section presents the T_COM_STS_GEN type IODDT explicit exchange objects applicable to all communication protocols except Fipio and ethernet. It includes the word type objects whose bits have a specific meaning. These objects are described in detail below.

In this part, the IODDT_VAR1 variable is of type T_COM_STS_GEN.

Observations

In general, the meaning of the bits is given for bit status 1. In specific cases, each bit status is explained.

Not all bits are used.

Explicit Exchange Execution Flags: EXCH_STS

The table below shows the meaning of channel exchange control bits from the EXCH_STS channel (%MWr.m.c.0):

Standard symbol	Type	Access	Meaning	Address
STS_IN_PROGR	BOOL	R	Read channel status words in progress.	%MWr.m.c.0.0
CMD_IN_PROGR	BOOL	R	Command parameter exchange in progress.	%MWr.m.c.0.1

Explicit Exchange Report: EXCH_RPT

The table below presents the meaning of the EXCH_RPT exchange report bits (%MWr.m.c.1):

Standard symbol	Type	Access	Meaning	Address
STS_ERR	BOOL	R	Detected read error for channel status words.	%MWr.m.c.1.0
CMD_ERR	BOOL	R	Detected error during command parameter exchange.	%MWr.m.c.1.1

Standard Channel Faults: CH_FLT

The table below shows the meaning of the bits of the status word CH_FLT (%MWr.m.c.2):

Standard symbol	Type	Access	Meaning	Address
NO_DEVICE	BOOL	R	No devices are working on the channel.	%MWr.m.c.2.0
ONE_DEVICE_FLT	BOOL	R	A device on the channel is inoperating.	%MWr.m.c.2.1
BLK	BOOL	R	Terminal block is not connected.	%MWr.m.c.2.2
TO_ERR	BOOL	R	Time out overtaken (analysis needed).	%MWr.m.c.2.3
INTERNAL_FLT	BOOL	R	Detected internal error or channel self-testing.	%MWr.m.c.2.4
CONF_FLT	BOOL	R	Different hardware and software configurations.	%MWr.m.c.2.5
COM_FLT	BOOL	R	Communication analysis needed with the channel.	%MWr.m.c.2.6
APPLI_FLT	BOOL	R	Application detected error (adjustment or configuration).	%MWr.m.c.2.7

Reading is performed by the READ_STS (IODDT_VAR1) instruction .