Details About T_DIS_IN_STD Type IODDT Explicit Object Exchange

At a Glance

This section presents IODDT explicit exchange objects of the T_DIS_IN_STD type applicable to discrete input modules. This section includes the word type objects whose bits have a specific meaning. These objects are explained in detail below.

Example of a declaration of a variable:

IODDT_VAR1 of type T_DIS_INT_STD

NOTE: In general, the meaning of the bits is given for bit status 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 following table shows exchange control bit meanings for channel EXCH_STS (%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	Error in reading status words of the channel (1 = error)	%MWr.m.c.1.0
`CMD_ERR`	BOOL	R	Error during a command parameter exchange (1 = error)	%MWr.m.c.1.1

Standard Channel Status: CH_FLT

The table below shows the meaning of the bits of the status word CH_FLT (%MWr.m.c.2). Reading is performed by a READ_STS (IODDT_VAR1).

Standard symbol	Type	Access	Meaning	Number
`TRIP`	BOOL	R	External event: Tripped	%MWr.m.c.2.0
`FUSE`	BOOL	R	External event: Fuse	%MWr.m.c.2.1
`BLK`	BOOL	R	Terminal block incorrectly wired	%MWr.m.c.2.2
`EXT_PS_FLT`	BOOL	R	External supply event	%MWr.m.c.2.3
`INTERNAL_FLT`	BOOL	R	Internal event module inoperative	%MWr.m.c.2.4
`CONF_FLT`	BOOL	R	Hardware or software configuration error	%MWr.m.c.2.5
`COM_FLT`	BOOL	R	Communication interruption	%MWr.m.c.2.6
`SHORT_CIRCUIT`	BOOL	R	External event: Short-circuit on a channel	%MWr.m.c.2.8
`LINE_FLT`	BOOL	R	Open wire detection⁽¹⁾	%MWr.m.c.2.9
(1) Only for BMX DAI 1614 and BMX DAI 1615 modules

Status Word: CH_CMD

The table below shows the CH_CMD (%MWr.m.c.3) status word bit meanings. The command is made by a WRITE_CMD (IODDT_VAR1).

Standard symbol	Type	Access	Meaning	Number
`PS_CTRL_DIS`	BOOL	R/W	Disable control of the external supply.	%MWr.m.c.3.1
`PS_CTRL_EN`	BOOL	R/W	Enable control of the external supply.	%MWr.m.c.3.2

NOTE: The control of the external power supply is managed to enable or disable a group of 16-channels from the PLC application and through a WRITE_CMD instruction addressing the 1st channel of 16-channel group (that is, channel 0, 16, 32, 46). However this command does not work with the last eight channels of the 16-channel groups (that is, channels 8..15, 24..31, 40..47, 56..63).