LK3U PLC

LK3U PLC is Compatible with Mitsubishi PLC series industrial control boards, has stable quality, powerful functions, reliable quality, and more importantly, incorporates more innovative elements to help the Chinese equipment industry cost control and equipment intelligent upgrades And testing, the practice has proven that the leading control PLC is a stable and reliable high-quality product

• Input signal bit DC24V, NPN, minimum drive current 10mA
• MR model output mode is a relay, the maximum drive voltage is AC250V/DC30V, < 3A; the peak value is 5A. MT model output mode is transistor, DC24V NPN (active low), < 500mA
• Analog input type default 0-10V 24 bit accuracy, optional 0-20mA or NTC(NTC10k or NTC50k)
• The analog output type is 0-10V
• High-speed input x0-x1 60KHz
• MT series default 8 high-speed output, Y0-Y7 200KHz*6/100KHz*2
• Dimensions do not contain terminals
• CAN communication port is only used for internal networking between our company plc(optional)
• Weighing 5v four wire sensor 24 bit accuracy(optional)
• 1 channel rs232 supports the Mitsubishi programming port protocol, Default baud rate 19200.can download programs, and connect to various touch screen
• 2 channel rs485 supports standard modbus rtu protocol/rs non-protocol communication, Mitsubishi programming port protocol, Default baud rate 19200. can be used to download programs, and various touch screens, inverters

LK3U Standard Edition Features

Communication	1 channel 232, 9-pin serial interface definition 2 (TXD sending) 3 (RXD receiving) 5 grounding, support Mitsubishi programming port communication protocol, can download programs to connect to various touch screens, etc.: communication distance, up to 10 meters 2 channels 485, interface definition A and B, support Mitsubishi programming port/Modbus RTU/RS protocol, can be connected to various touch screens, inverters, etc.; communication distance, up to 1000 meters
Analog	AD input: default (0-10V) can be changed to (0-20ma) DA output: The output is compatible with voltage and current. When connected to G- V+, it is 0-10V output, and when connected to G- I+, it is 0-20ma output.
High-speed pulse	Input: The default is 2 channels (X0 60khz x1 10khz) Output: LK3U-14/20/24 is 4-way (Y0-Y3 200khz): LK3U-32/48/64 is (Y0-Y5 200khz. Y6-Y7 100khz)

LK3U Optional Features

High-speed input expansion	High-speed input can add 4 channels (x2 10khz X3 60khz X4-X5 10khz)
Thermal resistance temperature ntc	AD can be customized as temperature input NTC10K (-40-150°C) or NTC 50K (-40-209°C) up to the number of corresponding AD channels
Weighing function	Up to 2 weighing interfaces can be opened, E+ E- S+ S- four-wire interface: excitation voltage 5V; signal voltage range -20mV+20mV; data collection frequency 10HZ
CAN communication	Mode 1: Connect multiple industrial control boards, expand I0 point or analog temperature, etc., without any delay in response speed, up to 320 channels, expand analog temperature input, do not occupy 485 and 232 communication ports Mode 2: Connect our dedicated expansion IO/analog module ***Only one of the modes can be selected

LK3U PLC

Model	DI	DO	AI	AO	Pulse input	Pulse output	Communication port
LK3U-14MR-4AD-2DA	8	6	4	2	2	/	1 channel RS232, 2 channel RS485; Option 1 can module
LK3U-14MT-4AD-2DA	8	6	4	2	2	4	1 channel RS232, 2 channel RS485; Option 1 can module
LK3U-20MR-4AD-2DA	12	8	4	2	2	/	1 channel RS232, 2 channel RS485; Option 1 can module
LK3U-20MT-4AD-2DA	12	8	4	2	2	4	1 channel RS232, 2 channel RS485; Option 1 can module
LK3U-32MR-10AD-2DA	16	16	10	2	2	/	1 channel RS232, 2 channel RS485; Option 1 can module
LK3U-32MT-10AD-2DA	16	16	10	2	2	8	1 channel RS232, 2 channel RS485; Option 1 can module
LK3U-48MR-10AD-2DA	24	24	10	2	2	/	1 channel RS232, 2 channel RS485; Option 1 can module
LK3U-48MT-10AD-2DA	24	24	10	2	2	8	1 channel RS232, 2 channel RS485; Option 1 can module
LE3U-64MR-10AD-2DA	32	32	10	2	2	/	1 channel RS232, 2 channel RS485; Option 1 can module
LE3U-64MT-10AD-2DA	32	32	10	2	2	8	1 channel RS232, 2 channel RS485; Option 1 can module

IO Expansion module

LK8EX8EYR	Dimensions 118*88*45 Installation hole distance 95*37	8 input 8 relay output	input X00-X117 output Y100-Y117	Max 2
LK8EX8EYT	Dimensions 118*88*45 Installation hole distance 95*37	8 input 8 transistor output	input X00-X117 output Y100-Y117	Max 2
LK-16EX	Dimensions 118*88*45 Installation hole distance 95*37	16 input	X120-X157	Max 2
LK-16EYR	Dimensions 118*88*45 Installation hole distance 95*37	16 relay outputs	Y120-Y157	Max 2
LK-16EYT	Dimensions 118*88*45 Installation hole distance 95*37	16 transistor outputs	Y120-Y157	Max 2

The expansion module must activate the can function

Analog/Weighing/Temperature Expansion Module

E4DA	Dimensions 118*88*45 Installation hole distance 95*37	4 analog outputs, compatible 0-10V/0-20ma	D1000-D1015	Max 2
E8AD	Dimensions 118*88*45 Installation hole distance 95*37	8 analog inputs, compatible 0-10V/0-20ma	D1016-D1023	Max 2
E2WH	Dimensions 118*88*45 Installation hole distance 95*37	2-channel weighing，S+ S- E+ E-	D1048-D1055 each channel occupies 2 registers (fault address M1048-M1051)	Max 1
E4WH	Dimensions 118*88*45 Installation hole distance 95*37	4 channel weighing，S+ S- E+ E-	D1048-D1055 each channel occupies 2 registers (fault address M1048-M1051)	Max 1
E2TC	Dimensions 118*88*45 Installation hole distance 95*37	2-channel thermocouple, type K	D1036-D1047 (fault address M1036-M1047)	Max 2
E4TC	Dimensions 118*88*45 Installation hole distance 95*37	4-channel thermocouple, type K	D1036-D1047 (fault address M1036-M1047)	Max 2
E6TC	Dimensions 118*88*45 Installation hole distance 95*37	6-channel thermocouple, type K	D1036-D1047 (fault address M1036-M1047)	Max 2
E2PT	Dimensions 118*88*45 Installation hole distance 95*37	2-channel PT100	D1024-D1035 (fault address M1024-M1035)	Max 2
E4PT	Dimensions 118*88*45 Installation hole distance 95*37	4-channel PT100	D1024-D1035 (fault address M1024-M1035)	Max 2
E6PT	Dimensions 118*88*45 Installation hole distance 95*37	6-channel PT100	D1024-D1035 (fault address M1024-M1035)	Max 2

Custom function

Thermal resistance temperature NTC
NTC 10K (-40～150 degrees) NTC 50K (-40～209 degrees)

Weighing function
Up to 2 weighing interfaces: E+ E- S+ S-, excitation voltage 5V, signal voltage -20mV～+20mV, data collection frequency 10Hz

CAN communication
Mode 1, the connection of multiple industrial control boards, extended IO or analog temperature, etc., response speed without any delay, maximum 320 channels, extended analog temperature input, without occupying 485 and 232 communication ports.
Mode 2: Connect dedicated IO extension and analog module

AD analog input description

Analog quantity range setting

AD range setting: D0 is the upper limit of the range, and D1 is the lower limit of the range (occupying 2 registers) D0 is not a fixed register, other registers can be used

Range setting formula:

Input signal 0-10V (0-20mA): D0=External upper range, D1=External lower range
Input signal 4-20mA: D0 = external upper range, D1 = external lower range-((external upper range-external lower range)/4)

Examples of range setting:

Pressure transmitter external range 0-5Kpa
Input signal 0-10V (0-20mA): D0=5000, D1=0
Input signal 4-20mA: D0=5000, D1=0-((5000-0)/4)=-1250

NTC temperature reading instructions

Need to buy (NTC-10K thermistor with B value 3950, NTC-50K thermistor with B value 3950)

Note: When the probe wire is too short, please do not connect other electronic wires. Only wires with low impedance and strong anti-interference ability can be used, otherwise, the temperature will be unstable.

NTC temperature reading without setting range

Divide the read data by 10, which is the actual temperature
When D10=500, it means that the current temperature of the first channel is 50 degrees
When D10=437, it means that the current temperature of the first channel is 43.7 degrees
When D11=800, it means that the current temperature of the second channel is 80 degrees
When D11=-200, it means that the current temperature of the second channel is -20 degrees

ntc10k is converted to ntc50k

Add M8000-M0V K4095 D8009 to the program

DA analog output description

Analog output command: WR3A

Range setting: the same as the analog input setting method, when the range is not set, 0-10V corresponds to 0-4095
Example: When D0 upper limit range is set to 1000 (the lower limit can be set to 0 by default)

1. When D10=500, DA0 outputs 5V voltage
2. When D10=800, DA0 outputs 8V voltage
3. When D11=340, DA1 outputs 3.4V voltage
4. When D11=550, DA1 outputs 5.5V voltage

Weighing function HX711

HX711 function description
M8112: Start HX711 function (ON to execute collection)
M8114:: HX711 read error, the error is turned ON, manual reset is required
D8114: Filtering times (0-32, default 12, 0-2 does not perform filtering)
D8112: HX711 data low bit
D8113: HX711 data high bit

Note: The relay or register used above D8112 D8113 D8114 keeps data after power failure

Note: Since M8112 will not reset the PLC after it is stopped if M8112 is turned ON, the data of HX711 will be read to D8112 D8113 regardless of whether the PLC is stopped or running.

D8116: The first channel weighing filter times	D8117: The second channel weighing filter times
D8118: The third channel weighing filter times	D8119: The fourth channel weighing filter times
D8120: Low bit of the first channel weighing data	D8121: High bit of the first channel weighing data
D8122: Low bit of the second channel weighing data	D8123: High bit of the second channel weighing data
D8124: Low bit of the third channel weighing data	D8125: The high bit of the third channel weighing data
D8126: Low bit of the fourth channel weighing data	D8127: High bit of the fourth channel weighing data

M8120: Start the weighing function of the first channel	M8121: The weighing error in the first channel cannot be automatically reset
M8122: Start the weighing function of the second channel	M8123: The weighing error in the second channel cannot be automatically reset
M8124: Start the third channel weighing function	M8125: The third channel weighing error, can not automatically reset
M8126: Start the fourth channel weighing function	M8127: The fourth channel weighing error, can not automatically reset

RS485-1/RS485-2 communication port parameter setting

RS485-1 protocol selection	Baud rate	Stop bit	Parity check	Data length	D8400/D8420value		D8401/D8421value
Modbus-RTU slave protocol	9600	1 bit	odd parity	8 bit	K12419	Decimal	K1	Decimal
					H3083	Hexadecimal	H1	Hexadecimal

RS485-2 protocol selection	Baud rate	Stop bit	Parity check	Data length	D8400/D8420value		D8401/D8421value
RS2 free communication protocol	9600	1 bit	No verification	8 bit	K4225	Decimal	K0	Decimal
					H1081	Hexadecimal	H0	Hexadecimal

		0（bit=OFF） 1（bit=ON）
bit0	Data length	7 bit*1 8bit
bit1 bit2	Parity	bit2 bit1 （0 0）No verification （0 1） ODD （1 1） EVEN
bit3	Stop bit	1bit 2bit
bit4 bit5 bit6 bit7	rate	bit7 bit6 bit5 bit4 bit7 bit6 bit5 bit4 (0 0 1 1):300 (1 0 0 0):9600 (0 1 0 0):600 (1 0 0 1):19200 (0 1 0 1):1200 (1 0 1 0):38400 (0 1 1 0):2400 (1 0 1 1):57600 (0 1 1 1):4800 (1 1 0 1):115200
bit8～bit11	Disable	set 0
bit12 bit13 bit14		bit14 bit13 bit12 (0 0 0): Programming port protocol (0 0 1): RS no protocol communication (RS485-1 dedicated) (0 1 0): RS2 non-protocol communication (RS485-2 dedicated) (0 1 1): MODBUS-RTU protocol (D8401//D8421 set to master and slave station)
bit15	Disable	set 0

1. When the data bit is 7 bits, no parity cannot be selected, otherwise, a 6304 fault code will be reported.
2. When the programming port protocol is selected, the data length is 7 bits, the stop bit is 1 bit, and the parity and even parity are fixed parameters that cannot be set, and the baud rate can be set.
3. Select MODBUS-RTU protocol, RS free port protocol, RS2 free port protocol, data length, stop bit, parity, and baud rate, all can be set.
4. If D8400 or D8420 does not open the MODBUS-RTU master station function, when the ADPRW instruction is used, the 6706 fault code will be reported.
5. When the value of D8401/D8421 is HO, the MODBUS master station protocol is selected.
6. When the value of D8401/D8421 is H10, the MODBUS slave station protocol is selected.

LK3U PLC Manual

Example

LK3U-MODBUSRTU-RS case

Wiring diagram