Introductions

LX6V-4DA (4-channel analog output) module is used to treat voltage, current and other analog signal output. The module is adapted to LX6 series PLC and LX6V-EM□-ECAT module device.

Supported software version (Wecon PLC Editor2): 2.3.118 and above;

Supported firmware version: 2.198 and above.

Naming rules

① Series

② Number of channels

③ AD: Analog input; DA: Analog output

Terminal Description

The terminal line arrangement of the analog expansion module is as follows:

Module model	Terminal arrangement
LX6V-4AD
LX6V-4DA

Indicator lamp

 4AD indicator lamp function description

4DA LED Function Description

Parameter specifications

AD input specifications

Project	Specification requirements
Input type	Analog input
Input circuit composition
Input mode	Voltage/current
Input channel	4
Resolution	1/16384 (14bit)
Voltage input range	-10V-10V
Voltage input impedance	190kΩ
Current input range	4mA-20mA, -20mA-20mA
Current input impedance	250Ω
Comprehensive precision	±1%
Conversion speed	1ms
Power supply	Interface power supply, DC 24V±10%, 55mA

DA output specifications

Project	Specification requirements
Output type	Analog output
Output circuit composition
Output mode	Voltage/current
Output channel	4
Resolution	1/20000, hardware can meet 16bit resolution
Voltage output range	-10V-10V
Voltage output load	≥2KΩ
Voltage output diagnosis	Support non-zero voltage output short-circuit detection with about 14mA overcurrent protection
Current output range	0-20mA, 4-20mA
Current output load	≤500Ω
Current output diagnosis	Support non-zero current output open circuit detection
Comprehensive precision	±1%
Conversion speed	Approximately 1ms
Power supply	Interface power supply, DC 24V±10%, 125mA

Environment specifications

Software specifications

4AD

 4DA

Instructions for use

The parameter configuration interface is as below:

PLC Expansion Module Configuration Description (The following takes the model LX6V-4AD as an example to explain).

① Double-click the expansion module configuration to open the configuration interface;

② Adding new modules according to the model and position of the current module connected host;

③ Double-click the module in the current machine slot to open the parameter configuration interface;

Parameter configuration interface

4AD module configuration

① Enable channels: It can be set whether to enable the current expansion module channel;

② Conversion mode: The default setting is ADV conversion mode, the measurement range is-10V-10V (-10000-10000);

Supported conversion modes:

-10V-10V (-10000-10000);

4mA-20mA (0-20000);

-20mA-20mA (-20000-20000).

③Filtering time: Support 1-255ms, used to reduce the fluctuation of channel output data, the default filtering time is 4ms. Please adjust the channel output data according to the requirements of the actual application scenario

to select the appropriate filtering time;

④ Enable calibration: When the actual analog input of the module channel deviates greatly from the measured channel value of the module, it can be used to improve the measurement precision and accuracy.

For modules with calibration enabled, the channel value is calculated as follows: Actual channel value = digital*gain+offset, e.g.:

When the channel input analog is 10000mV, the measured digital is 9950, and the actual channel value should be 10000;

When the channel input analog is -10000mV, the measured digital is-9950, and the actual channel value should be -10000;

Assume gain as a and offset as b

; the result is.

The derivation formula is as follows:

Gain = (Actual input analog 1-actual input analog 2)/ (Expansion module measured digital 1-Expansion module measured digital 2)

Offset = actual channel value-digital*gain

With the above formula, the gain and offset values can be derived to calibrate the module to improve the accuracy and stability of the measurement. When performing calibration, it is necessary to select the appropriate

parameters and methods, ensuring accurate and reliable measurement results.

I/O mapping

By default, channels are mapped to R device according to the current number of module channels. The figure below shows modules CH1-CH4 mapped to R0-R3 device.

4DA module configuration

① Enable channels: It can be set whether to enable the current expansion module channel;

② Conversion mode: The default setting is DAV conversion mode, and the output range is-10V-10V (-10000-10000);

Supported conversion modes: -10V-10V (-10000-10000), 4mA-20mA (0-20000), -20mA-20mA (-20000-20000)

③ Output status after stopping: When the PLC is in the stop status, the output status of the module channel mainly includes the following three types:

Output cleared: When PLC STOP, the output voltage/current of the module channel is 0V/0uA;

The output holds: When PLC STOP, the module channel output holds the digital output value set by the corresponding channel in the current I/O mapping device;

Output presets: When PLC STOP, the module channel outputs the voltage/current value corresponding to the preset digital or the preset analog.

④ Enable calibration: When the actual output analog of the module channel deviates greatly from the analog measured by the high-precision multimeter, it can be used to improve the output precision and accuracy.

For modules with calibration enabled, the channel value is calculated as follows: Channel input digital=actual voltage output corresponding digital*gain+offset

For example:

When the input digital of the channel is 10000, the measured output voltage of the channel by the high-precision multimeter is 9950mV (the corresponding digital is 9950);

When the channel input digital is -10000, the measured output voltage of the channel by the high-precision multimeter is -9950mV (the corresponding digital is-9950);

Assume gain as a and offset as b

the result is

The derivation formula is as follows:

Gain = (channel input digital quantity 1-channel input digital quantity 2)/ (multimeter measured digital 1-multimeter measured digital 2)

Offset=channel input digital-actual voltage output corresponding digital *gain

I/O mapping

By default, channels are mapped to R device according to the current number of module channels. The figure below shows modules CH1-CH4 mapped to R0-R3 device.

Click PLC download and check the extension function the interface in turn. Click Execute, and download the extension module configuration to PLC.

EtherCAT IO Slave Configuration

4AD Module Startup Parameters

① 4AD module CHx transform mode: Used to specify the current channel CHx (x∈[0, 3]) conversion mode:

Supported conversion modes:

0: Not enabled

1: -10V-10V (-10000-10000)

2: 4mA-20mA (0-20000)

3: -20mA-20mA (-20000-20000)

② 4AD module CHx filter time: Used to specify the current channel CHx (x ∈ [0, 3]) filtering time, range: 0-255, unit: ms

③ Reserve: reserve, not in use for the time being

I/O mapping: Modules CH0 to CH3 can be mapped into variables/device, for example, the figure below CH0 to CH3 channel values was mapped into D0 to D3 device.

4DA startup parameters

① 4DA module CHx transform mode: For specifying the current channel CHx (x∈ [0, 3]) conversion mode;

Supported conversion modes:

0: Not enabled

1: -10V-10V (-10000-10000)

2: 4mA-20mA (0-20000)

3: -20mA-20mA (-20000-20000)

② 4DA module CHx stopmode: For specifying the current channel CHx (x∈ [0, 3]) stop mode;

Supported stop modes:

0: Output cleared

1: Output hold

2: Output preset value

③ 4DA module CHx stopvalue: Used to specify that the current channel CHx (x∈ [0, 3]), which is set to the output digital in the preset value mode. When 4DA module CHx stopmode is set to 2, if PLC STOP or EtherCAT is disconnected, module channel will output the digital specified by this parameter.

I/O mapping: Modules CH0 to CH3 can be mapped into variables/device, for example, the figure below CH0 to CH3 channel values was mapped into D0 to D3 device.