Modbus RTU Relay 32CH Relay Module
तपशील
- उत्पादनाचे नाव: Modbus RTU Relay 32CH
- सुसंगतता: Raspberry Pi, STM32, Arduino
- कनेक्टिव्हिटी: RS485
ओव्हरview
Electrical and Relay Safety Instructions
- This product must be operated by professional electricians or qualified personnel. During use, ensure electrical safety, leakage protection, and proper insulation.
- Before installing, maintaining, or replacing the relay device, always turn off the power and unplug the device.
- Do not attempt to disassemble the relay device to avoid damage or the risk of electric shock.
- Properly install and place the relay device. Do not use it in humid, overheated, flammable, or explosive environments to prevent accidents caused by improper installation or use.
लोड मॅचिंग
- Ensure the relay’s rated voltage and current match the load. Do not exceed the rated capacity.
- For inductive loads (motors, coils, lamps, etc.), the starting current may be much higher than the rated current. Choose a relay with sufficient current margin.
शॉर्ट सर्किट आणि ओव्हरकरंट संरक्षण
- Install a fuse or circuit breaker in the relay circuit to prevent damage due to short circuits or accidental overcurrent.
- Ensure the load circuit has no short circuits during wiring, and select protection components with appropriate current ratings if necessary.
Arc and Switching Protection
- Relay switching generates arcs, which can cause contact wear or welding.
- For inductive loads, it is recommended to use RC snubber circuits or varistors for arc suppression.
प्रतिष्ठापन वातावरण
- Do not use the relay in humid, high-temperature, flammable, explosive, or dusty environments.
- Install the relay securely to avoid vibrations or shocks that may cause misoperation or damage.
Power-Off Operation
- Always cut off power before maintenance, wiring, or replacing the relay to ensure personnel and device safety.
- Latching relays are only powered when changing state. Avoid strong vibrations or strong magnetic fields while the relay is unpowered.
स्थिती पुष्टीकरण
- After powering on, confirm or reset the relay status as needed to prevent abnormal operation caused by transportation, installation, or external disturbances.
- Avoid power interruption during relay operation to prevent uncertain status or contact damage.
नियमित तपासणी
- Periodically inspect relay contacts, terminals, and insulation to ensure proper operation.
- If abnormal heating, odor, or burn marks are detected, immediately cut off power and replace the relay.
हार्डवेअर कनेक्शन
Example Demonstration
- The demo shows how the following two software operate. SSCOM serial port debugging assistant is more convenient to operate, free of installation, and more convenient for complete display and analysis of instructions, but the disadvantage is that the data is not intuitive. Modbus Poll software is directly operated on the register, and the data display is more convenient to observe, but the disadvantage is that the instruction is not displayed completely, so you need to be familiar with the Modbus register operation.
- You can test using any method. It is recommended to use the SSCOM serial port debugging assistant software for the first test.
SSCOM Serial Port Debugging Assistant
- Download SSCOM Serial port debugging assistant and open it on the computer, open the corresponding port number, and set the baud rate as 9600. Click Multi-Char to open the Send Multi-Char window, and click the function to send the corresponding command.
- If you need to send other commands, choose SendHEX. For checksum validation, select ModbusCRC16. After entering the first six bytes of the command, clicking SEND will automatically add the CRC check code.
- For detailed control commands, please see the development protocol.
Modbus Poll Software
- It is not convenient to use the SSCOM software for observing the data, you can select Modbus Poll software to read the data. Download and install the Modbus Poll software.
- Open the software, select Setup->Read/Write Definition, select the actual device address for Slave ID, select 01 Read Coils function code for Function, and change Quantity to 32 channels. Click OK to confirm.
- Select Connection->Connect…, choose the corresponding serial port, set the baud rate to 9600, and select 8 Data bits and None Parity. Click OK to connect.
- After the connection is normal, you can check the current relay status. Select the corresponding channel, then double-click the status value to pop up the send page. Choose On or Off, then Click Send to control the relay opening and closing.
डेमो चाचणी
- Note: RS485 can not be directly connected to the serial port of the Raspberry Pi, otherwise it may burn the device, you need to add 485 level conversion. For Raspberry Pi, it is recommended to work with the RS485 CAN HAT module. For NUCLEO-F103RB and Arduino, it is recommended to work with the RS485 CAN Shield module.
रास्पबेरी पाई
- Open the Raspberry Pi terminal and enter the following command to enter the configuration interface
- Then restart Raspberry Pi:
- /boot/config.txt उघडा file, find the following configuration statement to enable the serial port, if not, you can add it to the end of the file.
- For Raspberry Pi 3B users, the serial port is used for Bluetooth and needs to be commented out:
- Then restart Raspberry Pi:
- Insert the RS485 CAN HAT into the Raspberry Pi, and connect the Modbus RTU Relay module to the RS485 CAN HAT through A and B. If you are using other 485 devices, make sure to connect A-A, B-B. Run the following commands to run the demo:
एसटीएम 32
Note: The STM32 demo is based on the NUCLEO-F103RB and RS485 CAN Shield module.
- Download Demo, find the STM32 project file Modbus Relay.uvprojx in the path Modbus_RTU_Relay_32CH_Code\STM32\MDK-ARM, and double-click to open the STM32 project file. Note that you should ensure Keil5 software is installed on your computer before using it.
- Connect the STM32 to a computer via the STM32 download and debug probe. Compile and download the program to the development board.
- Install the RS485 CAN Shield module on the STM32. Connect the RS485_A on the RS485 CAN Shield module to the RS485_A on the Modbus RTU Relay via a wire, and connect the RS485_B on the RS485 CAN Shield module to the RS485_B on the Modbus RTU Relay via a wire. Then power on the Modbus RTU Relay and the STM32 sequentially.
- After powering on, the serial port will output the transmitted commands, which can be observed using a serial port assistant. Meanwhile, the relays will sequentially turn on (e.g., 1→2→3→4). Once all relays are fully activated, they will then sequentially turn off (e.g., 1→2→3→4). You can observe whether the relay is normally engaged through the LED indicator light.
अर्डिनो
Note: The Arduino demo is based on the UNO PLUS and RS485 CAN Shield module.
- Download Demo, find the Arduino project file Modbus_RTU_Relay.ino in the path Modbus_RTU_Relay_32CH_Code\Arduino\Modbus_RTU_Relay, and double-click to open the Arduino project file. Note that you should ensure Arduino IDE software is installed on your computer before using it.
- Connect the Arduino to the computer via a USB cable. In the Arduino IDE software, select the Arduino board model under Tools->Board. Choose the COM port that the Arduino is connected to under Tools->Port.
- After seeing the prompt to connect to the computer in the lower right corner, click to compile and flash the program, and wait for the flashing to complete.
- Install the RS485 CAN Shield module on the Arduino. Connect the RS485_A on the RS485 CAN Shield module to the RS485_A on the Modbus RTU Relay via a wire, and connect the RS485_B on the RS485 CAN Shield module to the RS485_B on the Modbus RTU Relay via a wire. Then power on the Modbus RTU Relay and the Arduino sequentially.
- After powering on, the serial port will output the transmitted commands, which can be observed using a serial port assistant. Meanwhile, the relays will sequentially turn on (e.g., 1→2→3→4). Once all relays are fully activated, they will then sequentially turn off (e.g., 1→2→3→4). You can observe whether the relay is normally engaged through the LED indicator light.
टीप: The data in the figure below is in ASCII code containing spaces and line breaks, and is not the actual data sent.
पीएलसी
Note: The PLC demo is based on SIMATIC S7-200 SMART.
- Download Demo, find the PLC project file modbus_rtu.smart in the path Modbus_RTU_Relay_32CH_Code\PLC, and double-click to open the PLC project file. Note that you should ensure STEP 7-MicroWIN SMART software is installed on your computer before using it.
- Connect the PLC to the computer via a network cable. Click to download
- Select the communication interface in the communication popup, find your device, and click Confirm
- In the download pop-up window, check the boxes for program blocks, data blocks, and system blocks, and then click Download.
- Connect the 485_A on the PLC module to RS485_A on the Modbus RTU Relay with a wire, and connect the 485_B on the PLC module to RS485_B on the Modbus RTU Relay with a wire. Then power on the Modbus RTU Relay.
- After powering on the Modbus RTU Relay, in the STEP 7-MicroWIN SMART software, find the “PLC” tab in the upper menu bar, switch to this tab, and click the green “RUN” button in the lower “Operation” area to perform the operation to make the PLC enter the running state
- After the PLC runs, the relays will sequentially turn on (e.g., 1→2→3→4). Once all relays are fully activated, they will then sequentially turn off (e.g., 1→2→3→4). You can observe whether the relay is normally engaged through the LED indicator light.
Development Protocol V2
फंक्शन कोड परिचय
|
फंक्शन कोड |
वर्णन |
नोंद |
|
01 |
कॉइल स्थिती वाचा |
Read relay status |
|
03 |
होल्डिंग रजिस्टर वाचा |
Read the address and version |
|
05 |
सिंगल कॉइल लिहा |
Write single relay |
|
06 |
सिंगल रजिस्टर लिहा |
Set the baud rate and address |
|
0F |
एकाधिक कॉइल लिहा |
Write all relays |
Register Address Introduction
|
Address (HEX) |
पत्ता storage content |
नोंदणी मूल्य |
परवानगी |
मोडबस फंक्शन कोड |
|
0x0000 …… 0x001F |
Channels 1~32 relay addresses |
0xFF00: relay on 0x0000: relay off 0x5500: relay toggle |
वाचा/लिहा |
0x01, 0x05, 0x0F |
|
0x00FF |
Control all relays |
0xFF00: all relays on 0x0000: all relays off 0x5500: all relays toggle |
लिहा |
0x05 |
|
0x0100 …… 0x011F |
Channels 1~32 relays toggle |
0xFF00: relay toggle 0x0000: relay unchanged |
लिहा |
0x05, 0x0F |
|
0x01FF |
All relays toggle |
0xFF00: all relays toggle 0x0000: all relays unchanged |
लिहा |
0x05 |
|
0x0200 …… 0x021F |
Channels 1~32 relays flash on |
Delay time: data*100ms Value: 0x0007, delay time: 7*100MS = 700MS |
लिहा |
0x05 |
|
0x0400 …… 0x041F |
Channels 1~32 relays flash off |
Delay time: data*100ms Value: 0x0007, delay time: 7*100MS = 700MS |
लिहा |
0x05 |
|
4×2000 |
UART पॅरामीटर |
The high eight bits indicate the parity mode: 0x00~0x02 The low eight bits indicate the baud rate mode: 0x00~0x07 |
वाचा/लिहा |
0x03, 0x06 |
|
4×4000 |
डिव्हाइस पत्ता |
Directly store Modbus address Device address: 0x0001-0x00FF |
वाचा/लिहा |
0x03, 0x06 |
|
4×8000 |
सॉफ्टवेअर आवृत्ती |
Converting to decimal and then shifting the decimal point two places to the left will represent the software version 0x0064 = 100 = V1.00 |
वाचा |
0x03 |
Modbus RTU Command Introduction
Control Single Relay
- Send code: 01 05 00 00 FF 00 8C 3A
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
05 |
05 आज्ञा |
रिले नियंत्रण |
|
०६ ४० |
पत्ता |
The register address of the relay to be controlled, 0x0000-0x001F |
|
FF ०७ |
आज्ञा |
0xFF00: relay on; 0x0000: relay off; 0x5500: relay toggle |
|
8C 3A |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- Return code: 01 05 00 00 FF 00 8C 3A
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
05 |
05 आज्ञा |
रिले नियंत्रण |
|
०६ ४० |
पत्ता |
The register address of the relay to be controlled, 0x0000-0x001F |
|
FF ०७ |
आज्ञा |
0xFF00: relay on; 0x0000: relay off; 0x5500: relay toggle |
|
8C 3A |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- उदाample: [Address 1 device]:
Control All Relays
- Send code: 01 05 00 FF FF 00 BC 0A
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
05 |
05 आज्ञा |
रिले नियंत्रण |
|
00 FF |
पत्ता |
Fixed 0x00FF |
|
FF ०७ |
आज्ञा |
0xFF00: relay on; 0x0000: relay off; 0x5500: relay toggle |
|
BC 0A |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- Return code: 01 05 00 FF FF 00 BC 0A
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
05 |
05 आज्ञा |
रिले नियंत्रण |
|
00 FF |
पत्ता |
Fixed 0x00FF |
|
FF ०७ |
आज्ञा |
0xFF00: relay on; 0x0000: relay off; 0x5500: relay toggle |
|
BC 0A |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- उदाample: [Address 1 device]:
Read Relay Status
- Send code: 01 01 00 00 00 20 3D D2
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
01 |
01 आज्ञा |
Query relay status |
|
०६ ४० |
Relay Start Address |
The register address of the relay, 0x0000 – 0x001F |
|
०६ ४० |
रिले क्रमांक |
The number of relays to be read, which must not exceed the maximum number of relays |
|
०डी डी६ |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- Receive code: 01 01 04 00 00 00 00 FB D1
|
फील्ड |
वर्णन |
नोंद |
|
01 |
साधन |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
| पत्ता | ||
|
01 |
01 आज्ञा |
Query relay status |
|
04 |
बाइट क्रमांक |
The number of all bytes of the returned status information |
|
00 00 00 00 |
क्वेरी स्थिती |
Received relay status The relay state is in small-endian format, with low bytes first and high bytes last Bit0: the first relay status; Bit1: the second relay status; And so on, with the idle high bit being zero |
|
FB D1 |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- उदाample: [Address 1 device]
Write Relay Status
- Send code: 01 0F 00 00 00 20 04 FF FF FF FF C5 1C
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
0F |
0F Command |
Write relay status |
|
०६ ४० |
Relay Start Address |
The register address of the relay to be controlled, 0x0000 – 0x001F |
|
०६ ४० |
रिले क्रमांक |
The number of relays to be operated, which must not exceed the maximum number of relays |
|
04 |
बाइट क्रमांक |
The byte number of the status |
|
FF FF FF FF |
रिले स्थिती |
The relay state is in small-endian format, with low bytes first and high bytes last Bit0: the first relay status; Bit1: the second relay status; And so on, with the idle high bit being zero |
|
C5 1C |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- Receive code: 01 0F 00 00 00 20 54 13
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
0F |
0F Command |
Control all registers |
|
०६ ४० |
Relay Start Address |
The register address of the relay to be controlled, 0x0000 – 0x001F |
|
०६ ४० |
रिले क्रमांक |
The number of relays to be operated |
|
०६ ४० |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- उदाample: [Address 1 device]
Relay Flash ON/OFF Command
- Send code: 01 05 02 00 00 07 8D B0
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
05 |
05 आज्ञा |
Single control command |
|
02 |
Flash on flash off |
02: flash on, 04: flash off |
|
00 |
Relay Address |
The address of the relay to be controlled, 0x00~0x1F |
|
०६ ४० |
विलंब वेळ |
The delay time: data*100ms Value: 0x0007, delay time: 7*100MS = 700MS The maximum setting for the flash-on flash-off time is 0x7FFF |
|
8D B0 |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- Receive code: 01 05 02 00 00 07 8D B0
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
05 |
05 आज्ञा |
Single control command |
|
02 |
Flash on flash off |
02: flash on, 04: flash off |
|
00 |
Relay Address |
The address of the relay to be controlled, 0x00~0x1F |
|
०६ ४० |
विलंब वेळ |
The delay time: data*100ms Value: 0x0007, delay time: 7*100MS = 700MS The maximum setting for the flash-on flash-off time is 0x7FFF |
|
8D B0 |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- उदाample: [Address 1 device]
Set Baudrate Command
- Send code: 01 06 20 00 00 05 42 09
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
06 |
06 command |
Set the baud rate and device address |
|
०६ ४० |
Baud rate register |
0x2000: set the baud rate |
|
00 |
Parity Method |
0x00: no parity, 0x01: even parity; 0x02: odd parity |
|
05 |
Baud Rate Value |
Correspondence of baud rate values 0x00: 4800 0x01: 9600 0x02: 19200 0x03: 38400 0x04: 57600 0x05: 115200 0x06: 128000 0x07: 256000 |
|
०६ ४० |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- Receive code: 01 06 20 00 00 05 42 09
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
06 |
06 command |
Set the baud rate and device address |
|
०६ ४० |
Baud rate register |
0x2000: set the baud rate |
|
00 |
Parity Method |
0x00: no parity, 0x01: odd parity; 0x02: even parity |
|
05 |
बॉड रेट |
Correspondence of baud rate values 0x00: 4800 0x01: 9600 0x02: 19200 0x03: 38400 0x04: 57600 0x05: 115200 0x06: 128000 0x07: 256000 |
|
०६ ४० |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- उदाample: [Address 1 device]
Set Device Address Command
- Send code: 01 06 40 00 00 01 5D CA
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
06 |
06 command |
Set the baud rate and device address |
|
०६ ४० |
Device address register |
0x4000: set the device address |
|
०६ ४० |
डिव्हाइस पत्ता |
Set the device address, 0x0001-0x00FF |
|
5D CA |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- Receive code: 01 06 40 00 00 01 5D CA
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
06 |
06 command |
Set the baud rate and device address |
|
०६ ४० |
Device address register |
0x4000: set the device address |
|
०६ ४० |
डिव्हाइस पत्ता |
Set the device address, 0x0001-0x00FF |
|
5D CA |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- उदाample: [Address 1 device]
Read Device Address Command
- Send code: 00 03 40 00 00 01 90 1B
|
फील्ड |
वर्णन |
नोंद |
|
00 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
03 |
03 आज्ञा |
डिव्हाइसचा पत्ता वाचा |
|
०६ ४० |
Device address register |
0x4000: read the device address |
|
०६ ४० |
बाइट क्रमांक |
निश्चित 0x0001 |
|
90 1B |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- Receive code: 00 03 02 00 01 44 44
|
फील्ड |
वर्णन |
नोंद |
|
00 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
03 |
03 आज्ञा |
Read the software version and device address |
|
02 |
बाइट क्रमांक |
The number of bytes returned |
|
०६ ४० |
डिव्हाइस पत्ता |
Set the device address, 0x0001-0x00FF |
|
०६ ४० |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- उदाample: [Address 2 device]
Read Software Version Command
- Send code: 01 03 80 00 00 01 AD CA
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
03 |
03 आज्ञा |
Read the software version and device address |
|
०६ ४० |
Software version register |
0x4000: read the device address, 0x8000: read software version |
|
०६ ४० |
बाइट क्रमांक |
निश्चित 0x0001 |
|
AD CA |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- Receive code: 01 03 02 01 2C B8 09
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
03 |
03 आज्ञा |
Read the software version and device address |
|
02 |
बाइट क्रमांक |
The number of bytes returned |
|
01 2C |
सॉफ्टवेअर आवृत्ती |
Converting to decimal and then shifting the decimal point two places to the left will represent the software version 0x012C = 300 = V3.00 |
|
B8 09 |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- उदाampले:
Exception Function Code
- When the received command is incorrect or the device is abnormal, an exception response will be returned in the following format:
- Return code: 01 85 03 02 91
|
फील्ड |
वर्णन |
नोंद |
|
01 |
डिव्हाइस पत्ता |
0x00 indicates the broadcast address, 0x01-0xFF indicates the device address |
|
85 |
Exception Function Code |
Exception function code = Request function code + 0x80 |
|
03 |
बाइट क्रमांक |
अपवाद कोड |
|
02 91 |
सीआरसी 16 |
The CRC16 checksum of the first 6 bytes of data |
- An exception code is a single-byte value that indicates the type of error. Several commonly used exception codes defined by the Modbus protocol:
|
अपवाद कोड |
नाव |
वर्णन |
|
0x01 |
बेकायदेशीर कार्य |
The requested function code is not supported |
|
0x02 |
बेकायदेशीर डेटा पत्ता |
The requested data address is incorrect |
|
0x03 |
बेकायदेशीर डेटा मूल्य |
The requested data value or operation cannot be executed |
|
0x04 |
Server Failure |
Server equipment failure |
|
0x05 |
प्रतिसाद |
The request has been received and is being processed |
|
0x06 |
Device Busy |
The device is currently busy and cannot perform the requested operation |
- संसाधने
डेमो
- डेमो
सॉफ्टवेअर
- Sscom5.13.1_for_Modbus_RTU_Relay_32CH.zip
- Modbus Poll software
- SecureCRT software
संबंधित संसाधने
- Modbus Protocol Specification
- Modbus Series BootLoader Description
- Protocol V1
- Using Modbus RTU Relay with Home Assistant
वारंवार विचारले जाणारे प्रश्न
Q: Can RS485 be directly connected to the Raspberry Pi's serial port?
A: No, it is not recommended as it may damage the device. Use an RS485 CAN HAT module for Raspberry Pi.
Q: What software is recommended for running demos?
A: For Raspberry Pi, use SSCOM Serial Port Debugging Assistant and Modbus Poll Software. For STM32, use Keil5 software. For Arduino, use Arduino IDE.
कागदपत्रे / संसाधने
 |
Modbus RTU Relay 32CH Relay Module [pdf] सूचना पुस्तिका RTU Relay 32CH Relay Module, RTU Relay 32CH, Relay Module |