Counter Device DDT

Introduction

This topic describes the device DDT for the Modicon X80 counter module, the instance default naming is described in Device DDT Instance Naming Rule.

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

platform with:
- M for Modicon X80 module
device type (CPT for counter)
function (STD for standard)
direction:
- IN
- OUT
max channel (2 or 8)

Example: For a Modicon X80 counter module with 2 standard inputs: T_M_CPT_STD_IN_2

Adjustment Parameter limitation

Adjustment parameters cannot be changed from the PLC application during operation (no support of READ_PARAM, WRITE_PARAM, SAVE_PARAM, RESTORE_PARAM) for:

counter modules in a Quantum EIO
counter modules in a M580 RIO

Modifying the adjustment parameters of a channel from Control Expert during a CCOTF operation causes the channel to be re-initialized.

The concerned parameters are:

PRESET_VALUE

Preset value
CALIBRATION_FACTOR

Calibration Factor
MODULO_VALUE

Modulo value
SLACK_VAL (Hysteresis)

Offset value

List of Implicit Device DDT

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

Device DDT	Modicon X80 modules
T_M_CPT_STD_IN_2	BMX EHC 0200
T_M_CPT_STD_IN_8	BMX EHC 0800

Implicit Device DDT Description

The following table shows the T_M_CPT_STD_IN_x 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_FLT	BYTE	internal detected errors byte of the module	read
CPT_CH_IN	ARRAY [0..x-1] of T_M_CPT_STD_CH_IN	Array of structure

The following table shows the T_M_CPT_STD_CH_IN_x[0..x-1] status word bits:

Standard Symbol		Type	Bit	Meaning	Access
FCT_TYPE		WORD	–	1 = Frequency	read
				2 = EvtCounting
				3 = PeriodMeasuring
				4 = Ratio1
				5 = Ratio2
				6 = OneShotCounter
				7 = ModuleLoopCounter
				8 = FreeLargeCounter
				9 = PulseWidthModulation
				10 = UpDownCounting
				11 = DualPhaseCounting
CH_HEALTH		BOOL	–	0 = the channel has a detected error	read
CH_HEALTH		BOOL	–	1 = the channel is operating correctly	read
ST_OUTPUT_0_ECHO		EBOOL	–	logical state of output 0	read
ST_OUTPUT_1_ECHO		EBOOL	–	logical state of output 1	read
ST_OUTPUT_BLOCK_0		EBOOL	–	status of physical counting output block 0	read
ST_OUTPUT_BLOCK_1		EBOOL	–	status of physical counting output block 1	read
ST_INPUT_A		EBOOL	–	status of physical counting input A	read
ST_INPUT_B		EBOOL	–	status of physical counting input B	read
ST_INPUT_SYNC		EBOOL	–	physical state of the IN_SYNC input (or IN_AUX)	read
ST_INPUT_EN		EBOOL	–	physical state of IN_EN input (enable)	read
ST_INPUT_REF		EBOOL	–	physical state of the IN_REF input (preset)	read
ST_INPUT_CAPT		EBOOL	–	physical state of IN_CAP input (capture)	read
COUNTER_STATUS [INT]	RUN	BOOL	0	the counter operates in counting mode only	read
	MODULO_FLAG	BOOL	1	flag set to 1 by a modulo switch event	read
	SYNC_REF_FLAG	BOOL	2	flag set to 1 by a preset or synchronization event	read
	VALIDITY	BOOL	3	the current numerical value is valid	read
	HIGH_LIMIT	BOOL	4	the current numerical value is locked at the upper threshold value	read
	LOW_LIMIT	BOOL	5	the current numerical value is locked at the lower threshold value	read
COMPARE_STATUS [INT]	COUNTER_LOW	BOOL	0	current counter value less than lower threshold (LOWER_TH_VALUE)	read
	COUNTER_WIN	BOOL	1	current counter value is between lower threshold (LOWER_TH_VALUE) and upper threshold (UPPER_TH_VALUE)	read
	COUNTER_HIGH	BOOL	2	current counter value greater than upper threshold (UPPER_TH_VALUE)	read
	CAPT_0_LOW	BOOL	3	Value captured in register 0 is less than lower threshold (LOWER_TH_VALUE)	read
	CAPT_0_WIN	BOOL	4	Value captured in register 0 is between lower threshold (LOWER_TH_VALUE) and upper threshold (UPPER_TH_VALUE)	read
	CAPT_0_HIGH	BOOL	5	Value captured in register 0 is greater than upper threshold (UPPER_TH_VALUE)	read
	CAPT_1_LOW	BOOL	6	Value captured in register 1 is less than lower threshold (LOWER_TH_VALUE)	read
	CAPT_1_WIN	BOOL	7	Value captured in register 1 is between lower threshold (LOWER_TH_VALUE) and upper threshold (UPPER_TH_VALUE)	read
	CAPT_1_HIGH	BOOL	8	Value captured in register 1 is greater than upper threshold (UPPER_TH_VALUE)	read
COUNTER_CURRENT_VALUE_S(1)		DINT	–	Current counter value during event	read
CAPT_0_VALUE_S(1)		DINT	–	Value captured in register 0	read
CAPT_1_VALUE_S(1)		DINT	–	Value captured in register 1	read
COUNTER_CURRENT_VALUE_US(2)		UDINT	–	Current counter value during event	read
CAPT_0_VALUE_US(2)		UDINT	–	Value captured in register 0	read
CAPT_1_VALUE_US(2)		UDINT	–	Value captured in register 1	read
OUTPUT_0		EBOOL	–	forces OUTPUT_0 to level 1	read / write
OUTPUT_1		EBOOL	–	forces OUTPUT_1 to level 1	read / write
OUTPUT_BLOCK_0_ENABLE		EBOOL	–	implementation of output 0 function block	read / write
OUTPUT_BLOCK_1_ENABLE		EBOOL	–	implementation of output 1 function block	read / write
FORCE_SYNC		EBOOL	–	counting function synchronization and start	read / write
FORCE_REF		EBOOL	–	set to preset counter value	read / write
FORCE_ENABLE		EBOOL	–	implementation of counter	read / write
FORCE_RESET		EBOOL	–	reset counter	read / write
SYNC_RESET		EBOOL	–	reset SYNC_REF_FLAG	read / write
MODULO_RESET		EBOOL	–	reset MODULO_FLAG	read / write
FUNCTIONS_ENABLING [INT]	VALID_SYNC	BOOL	0	synchronization and start authorization for the counting function via the IN_SYNC input	read / write
	VALID_REF	BOOL	1	operation authorization for the internal preset function	read / write
	VALID_ENABLE	BOOL	2	authorization of the counter enable via the IN_EN input	read / write
	VALID_CAPT_0	BOOL	3	capture authorization in the capture 0 register	read / write
	VALID_CAPT_1	BOOL	4	capture authorization in the capture 1 register	read / write
	COMPARE_ENABLE	BOOL	5	comparators operation authorization	read / write
	COMPARE_SUSPEND	BOOL	6	comparator frozen at its last value	read / write
LOWER_TH_VALUE_S(1)		DINT	–	lower threshold value	read / write
UPPER_TH_VALUE_S(1)		DINT	–	upper threshold value	read / write
PWM_FREQUENCY_S(1)		DINT	–	output frequency value (unit = 0.1 Hz)	read / write
LOWER_TH_VALUE_US(2)		UDINT	–	lower threshold value	read / write
UPPER_TH_VALUE_US(2)		UDINT	–	upper threshold value	read / write
PWM_FREQUENCY_US(2)		UDINT	–	output frequency value (unit = 0.1 Hz)	read / write
PWM_DUTY		INT	–	duty cycle value of the output frequency (unit = 5%)	read / write
(1) Signed application specific function (ASF) must be used (2) Unsigned application specific function (ASF) must be used

Here below is all the signed ASF that must be used with a counter BMX EHC 0200:

Free Large counter Mode
Ratio 1
Ratio 2

Here below is all the unsigned ASF that must be used with a counter BMX EHC 0200:

Event Counting Mode
Frequency Mode
Modulo Loop Counter Mode
One Shot Counter Mode
Period Measuring Mode
Pulse Width Modulation Mode

Here below is all the signed ASF that must be used with a counter BMX EHC 0800:

Up Down Counting Mode

Here below is all the unsigned ASF that must be used with a counter BMX EHC 0800:

Event Counting Mode
Frequency Mode
Modulo Loop Counter Mode
One Shot Counter Mode

Use and Description of DDT for Explicit Exchange

The following table shows the Derived Data Type (DDT) used for the variables connected to dedicated EFB parameter to perform an explicit exchange:

DDT	Description
T_M_CPT_STD_CH_STS	Structure to read the channel status of a counting module.	Depending on the module location, the DDT can be connected to the STS output parameter of the EFB: READ_STS_QX when the module is located in Quantum EIO. READ_STS_MX when the module is located in a M580 local rack or in M580 RIO drops.
T_M_SIGN_CPT_STD_CH_PRM	Structure for adjustment parameters of a channel of a counting module (signed application specific function) in a M580 local rack.	The DDT can be connected to the PARAM output parameter of the EFB: READ_PARAM_MX to read module parameters. WRITE_PARAM_MX to write module parameters. SAVE_PARAM_MX to save module parameters. RESTORE_PARAM_MX to restore the new parameters of the module.
T_M_UNSIGN_CPT_STD_CH_PRM	Structure for adjustment parameters of a channel of a counting module (unsigned application specific function) in a M580 local rack.
NOTE: Targeted channel address (ADDR) can be managed with ADDMX EF (connect the output parameter OUT to the input parameter ADDR of the communication functions).

The following table shows the structure of the T_M_CPT_STD_CH_STS DDT:

Standard Symbol		Type	Bit	Meaning	Access
CH_FLT [INT]	EXTERNAL_FLT_INPUTS	BOOL	0	external detected error at inputs	read
	EXTERNAL_FLT_OUTPUTS	BOOL	1	external detected error at outputs	read
	INTERNAL_FLT	BOOL	4	internal detected error: channel inoperative	read
	CONF_FLT	BOOL	5	hardware or software configuration detected error	read
	COM_FLT	BOOL	6	bus communication detected error	read
	APPLI_FLT	BOOL	7	application detected error	read
	COM_EVT_FLT	BOOL	8	communication event detected fault	read
	OVR_EVT_CPU	BOOL	9	CPU overflow event	read
	OVR_CPT_CH	BOOL	10	counter channel overflow	read
CH_FLT_2 [INT]	SENSOR_SUPPLY	BOOL	2	low input power supply for the sensors	read
	ACTUATOR_SUPPLY_FLT	BOOL	3	output power supply loss	read
	SHORT_CIRCUIT_OUT_0	BOOL	4	short circuit on output 0	read
	SHORT_CIRCUIT_OUT_1	BOOL	5	short circuit on output 1	read

The following table shows the structure of the T_M_SIGN_CPT_STD_CH_PRM DDT:

Standard Symbol	Type	Bit	Meaning	Access
MODULO_VALUE	DINT	–	Modulo value	read/write
PRESET_VALUE	DINT	–	Preset value	read/write
CALIBRATION_FACTOR	INT	–	Adjust the value from – 10 % to + 10 %, unit = 0.1 %	read/write
SLACK_VAL	INT	–	Hysteresis	read/write

The following table shows the structure of the T_M_UNSIGN_CPT_STD_CH_PRM DDT:

Standard Symbol	Type	Bit	Meaning	Access
MODULO_VALUE	UINT	–	Modulo value	read/write
PRESET_VALUE	UINT	–	Preset value	read/write
CALIBRATION_FACTOR	INT	–	Adjust the value from – 10 % to + 10 %, unit = 0.1 %	read/write
SLACK_VAL	INT	–	Hysteresis	read/write