Discrete Device DDT Names

Introduction

This topic describes the Control Expert Discrete Device DDT. The instance default naming is described in Device DDT Instance Naming Rule.

Regarding the device DDT, its name contains the following information:

platform with:
- U for unified structure between Modicon X80 module and Quantum
device type (DIS for discrete)
function (STD for standard)
direction:
- IN
- OUT
max channel (1, 2, 4 …64)

Example

For a Modicon X80 module with 16 standard inputs/outputs: T_U_DIS_STD_IN_16_OUT_16

List of Implicit Device DDT

The following table shows the list of device DDT and their X80 modules:

Device DDT Type	Modicon X80 Devices
`T_U_DIS_STD_IN_8`	BMX DAI 0805 BMX DAI 0814
`T_U_DIS_STD_IN_16`	BMX DAI 1602 BMX DAI 1603 BMX DAI 1604 BMX DAI 1614 BMX DAI 1615 BMX DDI 1602 BMX DDI 1603 BMX DDI 1604
`T_U_DIS_STD_IN_32`	BMX DDI 3202K BMX DDI 3203 BMX DDI 3232
`T_U_DIS_STD_IN_64`	BMX DDI 6404K
`T_U_DIS_STD_OUT_8`	BMX DRA 0804 BMX DRA 0805 BMX DRA 0815 BMX DRC 0805
`T_U_DIS_STD_OUT_16`	BMX DDO 1612 BMX DDO 1602 BMX DAO 1605 BMX DAO 1615 BMX DRA 1605
`T_U_DIS_STD_OUT_32`	BMX DDO 3202K
`T_U_DIS_STD_OUT_64`	BMX DDO 6404K
`T_U_DIS_STD_IN_8_OUT_8`	BMX DDM 16022 BMX DDM 16025
`T_U_DIS_STD_IN_16_OUT_16`	BMX DDM 3202K

Implicit Device DDT Description

The following table shows the T_U_DIS_STD_IN_x and the T_U_DIS_STD_OUT_y status word bits:

Standard Symbol	Type	Meaning	Access
MOD_HEALTH	BOOL	0 = the module has a detected error	read
MOD_HEALTH	BOOL	1 = the module is operating correctly	read
MOD_FLT¹	BYTE	internal detected errors byte of the module	read
DIS_CH_IN	ARRAY [0...x-1]of `T_U_DIS_STD_CH_IN`	array of structure
DIS_CH_OUT	ARRAY [0...y-1] of `T_U_DIS_STD_CH_OUT`	array of structure
1 Module Status is implicitly exchanged through the `MOD_FLT` field

The following table shows the T_U_DIS_STD_IN_x_OUT_y status word bits:

Standard Symbol	Type	Meaning	Access
MOD_HEALTH	BOOL	0 = the module has a detected error	read
MOD_HEALTH	BOOL	1 = the module is operating correctly	read
MOD_FLT¹	BYTE	internal detected errors byte of the module	read
DIS_CH_IN	ARRAY [0...x-1] of `T_U_DIS_STD_CH_IN`	array of structure
DIS_CH_OUT	ARRAY [x...(x+y-1)] of `T_U_DIS_STD_CH_OUT`	array of structure
1 Module Status is implicitly exchanged through the `MOD_FLT` field

The following table shows the T_U_DIS_STD_CH_IN[0...x-1] and the T_U_DIS_STD_CH_OUT[x...(x+y-1)] structure meaning:

Standard Symbol	Type	Meaning	Access
CH_HEALTH	BOOL	0 = the channel has a detected error	read
CH_HEALTH	BOOL	1 = the channel is operating correctly	read
VALUE	EBOOL	indicates the status of the sensor controlling the input channel c	read¹
¹ `VALUE` of the `T_U_DIS_STD_CH_OUT` structure can be accessed in read / write

Explicit DDT Instances Description

Explicit exchanges (Read Status or Write Command) - only applicable to Modicon X80 I/O channels - are managed with READ_STS_QX or WRITE_CMD_QX EFB instances for Modicon Quantum and by READ_STS_MX or WRITE_CMD_MX EFB instances for Modicon M580.

Targeted channel address (ADDR) can be managed with ADDMX EF (connect ADDMX OUT to ADDR)
READ_STS_QX or READ_STS_MX output parameter (STS) can be connected to a "T_M_xxx_yyy_CH_STS" DDT instance (variable to be created manually), where:
- xxx represents the device type
- yyy represents the function
Example: T_M_DIS_STD_CH_STS
WRITE_CMD_QX or WRITE_CMD_MX input parameter (CMD) can be connected to a ""T_M_DIS_STD_xxx_yyy_CMD" DDT instance

where:
- xxx represents the device type
- yyy represents the direction
Example: T_M_DIS_STD_CH_IN_CMD

The following table shows the T_M_DIS_STD_CH_STS structure status word bits:

Standard Symbol		Type	Bit	Meaning	Access
CH_FLT	TRIP	BOOL	0	external detected error tripped	read
	FUSE	BOOL	1	external detected error: fuse	read
	BLK	BOOL	2	terminal block detected error	read
	EXT_PS_FLT	BOOL	3	internal detected error: module out of order	read
	INTERNAL_FLT	BOOL	4	external supply detected fault	read
	CONF_FLT	BOOL	5	configuration detected fault: different hardware and software configurations	read
	COM_FLT	BOOL	6	problem communicating with the PLC	read
	--	BOOL	7	reserved	read
	SHORT_CIRCUIT	BOOL	8	external detected error: short-circuit on a channel	read
	LINE_FLT	BOOL	9	Open wire detection⁽¹⁾	read
(1) Only for BMX DAI 1614 and BMX DAI 1615 modules.

The following table presents the T_M_DIS_STD_CH_IN_CMD structure status word bits:

Standard Symbol		Type	Bit	Meaning	Access
CH_CMD [INT]	PS_CTRL_DIS	BOOL	1	disable control of the external supply	read / write
CH_CMD [INT]	PS_CTRL_EN	BOOL	2	enable control of the external supply	read / write

The following table presents the T_M_DIS_STD_CH_OUT_CMD structure status word bits:

Standard Symbol		Type	Bit	Meaning	Access
CH_CMD [INT]	REAC_OUT	BOOL	0	reactivation of tripped outputs (protected outputs)	read / write
	PS_CTRL_DIS	BOOL	1	disable control of the external supply	read / write
	PS_CTRL_EN	BOOL	2	enable control of the external supply	read / write

NOTE: In a user application the WRITE_CMD_QX (in an EIO drop) can also define the active or inactive state of the external power supply monitoring and overrides the Supply monitoring setting.

WRITE_CMD_QX only works over the first 8 channels (0...7, 16...23, 32...39 and 48...55) of the 16-channel groups, but affects all 16 channels of the group.