Modbus rtu

Buy Modbus RTU 7-24V Relay Module RS485/TTL 1-way Input and Output with Anti-revers for R132.49

Buy 8 Channel DC 12V RS485 Relay Module Modbus RTU 485 Remote Control Switch For PL for R614.46

Buy 10pcs 6-24V 8CH Channel RS485 Module Modbus RTU Protocol AT Command Multi-function Relay PLC Control for R1,180.00

Buy KING PIGEON IOT101 GSM/GPRS Modbus RTU Over TCP 1-way DIN Input Switch Volume (for R1,347.15

Buy 8Channel DC 5V 12V 24V RS485 Modbus RTU Control Module UART Relay Switch Board PLC for R177.16

Buy 3pcs Modbus RTU 7-24V Relay Module RS485/TTL 1-way Input and Output with Anti-reverse Protection for R383.87

Buy 5pcs Modbus RTU 7-24V Relay Module RS485/TTL 1-way Input and Output with Anti-r for R499.00

Buy 3pcs Modbus RTU 7-24V Relay Module RS485/TTL 1-way Input and Output with Anti-r for R341.85

Buy Waveshare Modbus RTU 8-way Relay Module RS485 Interface with Multiple Isolation Protection Circuit for R770.00

Buy KING PIGEON M320T 8DO+1RS485+ 1RJ45 Modbus RTU Master RS485 to Ethernet Remot for R2,869.14

Buy N4D8C12 Isolation 12V/24V RS485 Relay Modbus RTU Protocol D... (VOLTAGE: 12V | TYPE: WITHDINRAILBOX) for R995.00

Version Note: Product name classification that can measure the maximum peak range, MODBUS version with RS485 communication interface, you can use the host computer software to collect data, but also with the PLC, DCS, intelligent instruments and other equipment to communicate! In addition, other functions are the same! Measurement instructions: Measurement voltage can be set to independent power supply and non-independent power supply mode, the module has a black jump cap, plug in means that using a non-independent power supply, unplug means using independent power supply! Wiring method is not the same, please check the wiring carefully! The wrong wiring leads to the burnout module is not responsible! Non-independent power supply is the module supply voltage is the measured voltage (5-30V), independent power supply is the module power supply and the measured voltage is separated, then the module supply voltage 5-24V, the maximum voltage measured for the purchase of voltage value (standard 30V is 0-30V) Optional type: (please choose the one you need) 3A30V 10A30V 10A30V Modbus 3A30V Modbus Feature: Can measure the voltage, current, ambient temperature at the same time. Voltage range: 0-30V Current range: 0-10A / 0-3A (high current temperature exceeds 60 degrees please strengthen the cooling) Temperature range: -10 to 100 degrees (accuracy 1%) Accuracy: ±1% (the greater the voltage and current range, the corresponding reduction in accuracy) Support standard Modbus RTU protocol, communication mode RS485 (Optional function) Voltage and temperature for the switch display (through the button to set the temperature display mode: under power down situation, press and hold the button for three seconds and then release button, you can re-power to switch, only show the voltage mode or switch display voltage and temperature) With the agreement function can be set to 1-255 device address, set by the host computer software (this functions is optional); Product size: 47.8 x 28.8 x 30mm Installation hole: 45 * 25.5mm Weight: 24g Interface description: Marked A, B terminals are the RS485 interface for Modbus communication GND: voltage negative IIN: measured current load of the negative VCC: when using non-independent power supply, the measured power is positive, when using independent power supply for the module power supply positive VIN: independent measured voltage is positive, the load is positive. Modbus test description: (Optional function) 1. Connect the hardware 1) Connected to the RS485 serial port, A connected A, B connected B, connected to the measured voltage. 2. Software settings: 1) In the "communication settings" set the serial port number, open the serial port. 2) Set the module address in the "Analog acquisition" item (the default address is "1", you can change the module address in the "Module address change" item if the module address is not clear) 3) In the "analog acquisition" click on the "acquisition" command on it. If display "communication error" please confirm the RS485 interface A, B-side is not reversed. Package includes: 1 x DC Meter

SELECTED OPTION: CURRENT: 10A CLICK HERE for more options in this item. Instructions Version Note: Product name classification that can measure the maximum peak range, MODBUS version with RS485 communication interface, you can use the host computer software to collect data, but also with the PLC, DCS, intelligent instruments and other equipment to communicate! In addition, other functions are the same! Measurement instructions: Measurement voltage can be set to independent power supply and non-independent power supply mode, the module has a black jump cap, plug in means that using a non-independent power supply, unplug means using independent power supply! Wiring method is not the same, please check the wiring carefully! The wrong wiring leads to the burnout module is not responsible! Non-independent power supply is the module supply voltage is the measured voltage (5-30V), independent power supply is the module power supply and the measured voltage is separated, then the module supply voltage 5-24V, the maximum voltage measured for the purchase of voltage value (standard 30V is 0-30V) Optional type: (please choose the one you need) 3A30V 10A30V 10A30V Modbus 3A30V Modbus Feature: Can measure the voltage, current, ambient temperature at the same time. Voltage range: 0-30V Current range: 0-10A / 0-3A (high current temperature exceeds 60 degrees please strengthen the cooling) Temperature range: -10 to 100 degrees (accuracy 1%) Accuracy: ±1% (the greater the voltage and current range, the corresponding reduction in accuracy) Support standard Modbus RTU protocol, communication mode RS485 (Optional function) Voltage and temperature for the switch display (through the button to set the temperature display mode: under power down situation, press and hold the button for three seconds and then release button, you can re-power to switch, only show the voltage mode or switch display voltage and temperature) With the agreement function can be set to 1-255 device address, set by the host computer software (this functions is optional); Product size: 47.8 x 28.8 x 30mm Installation hole: 45 * 25.5mm Weight: 24g Interface description: Marked A, B terminals are the RS485 interface for Modbus communication GND: voltage negative IIN: measured current load of the negative VCC: when using non-independent power supply, the measured power is positive, when using independent power supply for the module power supply positive VIN: independent measured voltage is positive, the load is positive. Modbus test description: (Optional function) 1. Connect the hardware 1) Connected to the RS485 serial port, A connected A, B connected B, connected to the measured voltage. 2. Software settings: 1) In the "communication settings" set the serial port number, open the serial port. 2) Set the module address in the "Analog acquisition" item (the default address is "1", you can change the module address in the "Module address change" item if the module address is not clear) 3) In the "analog acquisition" click on the "acquisition" command on it. If display "communication error" please confirm the RS485 interface A, B-side is not reversed. Package includes: 1 x DC Meter

Buy Multifunction RS485 Relay NPN PNP IO Control Core Board Modbus Rtu AT Command Module for R140.96

Buy (Voltage 24V Type Board Only)N4D8C12 Isolation 12V/24V RS485 Relay Modbus RTU Protocol DIN35 Rai... for R719.00

Buy 3pcs DS18B20 5V RS485 Com UART Temperature Acquisition Sensor Module Modbus RTU PC PLC MCU Digital T for R481.00

FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA GY-MODBUS-DCI RS485 Non-Contact Infrared Thermometer Temperature Measurement Module Description: Power supply voltage: 5V Power supply current: 10mA Size: 21.7 x 24.2 mm Module adopts Modbus RTU communication protocol Package included: 1 x GY-MODBUS-DCI RS485 Non-Contact Infrared Thermometer Temperature Measurement Module GY-MODBUS-DCI RS485 Non-Contact Infrared Thermometer Temperature Measurement Module GY-MODBUS-DCI RS485 Non-Contact Infrared Thermometer Temperature Measurement Module

Description USB to RS485 - 3 Pin Running MODBUS/RTU over an RS485 network is pretty cool, in an old-school way. The technique was invented decades ago, and allowed you to connect to a few dozen MODBUS devices over simple twisted pair copper wire, over a thousand feet distance or more. It's such a successful technique that it has not been supplanted by new modern communication technologies like TCP/IP. Unfortunately most modern computers do not have RS-485 interfaces. Fortunately there are many USB-RS485 adapters available. RS485 to TTL Module is for long range, high data rate error prone differential communication. Digital communications networks implementing the EIA-485 standard can be used effectively over long distances and in electrically noisy environments. Multiple receivers may be connected to such a network in a linear, multi-drop configuration. These characteristics make such networks useful in industrial environments and similar applications. Quick Spec Standard: USB2.0 standard, backward compatible, in line with the standard RS485 Direction control: the use of automatic data flow control, auto distinguish and control data transfer direction Baud Rate: 300-9216000bps, automatically detecting the serial signal data rate Load capacity: support multipoint, each converter allows RS485 interface device to connect 32 Interface Protection: TVS tube protection, USB self-recovery protection Self-powered from USB Using virtual serial COM port Support Windows98 / ME / 2000 / XP / WIN7 / Vista / Linux / Mac Dimensions: 76 x 18.5 x 16mm Resources Datasheet Shipping List 1 X USB to RS485 - 3 Pin More Products View More Products