Type:Logic ICs
Condition:New
Freight number:8AI
Color classification:Sky blue
Decoration and construction content:Automation of industrial control
A chapter of product introduction
First, product overview
MBSL8ADThe module is a 8 way analog acquisition module, which can collect 8 commonly used 0 channels.~20mA4~20mAAnalog signal. The analog signal data is collected and output through the isolated RS485 interface. The module adopts standard Modbus RTU communication, and can directly accommodate all kinds of upper computer configuration software, PLC, DCS, etc. The electrical signals of signal acquisition, power supply and RS485 communication are isolated from each other, effectively restraining all kinds of mode and common mode interference, ensuring the accuracy of the data, and ensuring the stability and reliability of the module.
1The 8 channel single ended analog input (DC0-20mA/4-20mA) adopts an independent 12 bit industrial AD acquisition chip.
2The RS485 MODBUS RTU standard communication can be used for networking with PC configuration software, PLC, industrial touch screen, etc.With a communication state indicator.
3. Signal acquisition, power supply, RS485 communication, electrical signals are isolated from each other.
4. The communication circuit adopts lightning protection, anti-jamming design,Power polarity protection
5. RS485The communication signal output interface adopts over voltage and over current double protection.
6. It can be widely used for signal acquisition and control in industrial field equipment.
7. The communication format can be set by software, and the module can be restored to the factory settings by pressing the button for 3 seconds.
8,The module adopts dual watchdog timer with hardware and software to ensure that the module does not crash and work stably and reliably.
Two, the main technical indicators
Project | Technical indicators |
Signal input | 1Analog inputChannel:8Channel isolation acquisition 2The type of analog input: 0-20mA/4-20mAAnalog signal 3Precision of analog input: + 0.02mA 4The range of working temperature: -20 ~ 70 C 5Resolution: 12bit 6External power supply: DC 9V to 30V/2W 7,ADAcquisition circuit and CPU isolation voltage protection: 1500V |
Communication output | 1Communication protocol: MODBUS-RTU 2Interface type: isolated RS485 communication, output interface adopts over voltage and over current double protection. 3Baud rate: 4800bps, 9600bps, 19200bps, 38400bps, 57600bps 4Check bit: no check, parity check, odd check 5Setting mode: module address, baud rate, parity bit can be set by software. 6Communication distance: 9600bps 1200 meters |
Module size and installation method | 1. Installation: Standard DIN guide rail installation or screw installation. 2,Shape size: 125 x 73 x 35mm |
work environment | Temperature: -10~+55 CHumidity: 35~85%(non - condensation) |
Working power supply | 1Power supply voltage: 10V to 30V wide range of power supply, polarity protection with power supply 2Power consumption: less than 3W |
Three. Interface definition
PW+ | External power input positive end |
PW- | External power input negative end |
AI1 | 1 way analog input positive end |
AGND | Signal to the first way analog input negative end |
AI2 | Second way analog input positive end |
AGND | Signal to the second way analog input negative end |
AI3 | Third way analog input positive end |
AGND | Signal to the third way analog input negative end |
AI4 | Fourth way analog input positive end |
AGND | Signal to the fourth way analog input negative end |
AI5 | Fifth way analog input positive end |
AGND | Signal to the fifth way analog input negative end |
AI6 | Sixth way analog input positive end |
AGND | Signal to the sixth way analog input negative end |
AI7 | Seventh way analog input positive end |
AGND | Signal to the seventh way analog input negative end |
AI8 | Eighth way analog input positive end |
AGND | Signal to the eighth way analog input negative end |
485A | RS485Signal A+ |
485B | RS485Signal B- |
Four. A schematic diagram of analog input
Five. Communication instructions
1Communication parameters description (factory value):9600, N, 8, 1
parameter | Explain |
9600 | baud rate |
N (No check) | Checkout bit |
8 | Data bit |
1 | Stop position |
The second chapterModbusRegister and communication protocol description
1. Module supported MODBUS function code and address range
Register type | Address range | Function code | Function code description |
Input register | 30001-30008 | 0x04H | Read one or more input registers |
Hold register | 40001-40016 | 0x03H | Read one or more hold registers |
0x06H | Write a data to keep the register |
0x10H | Write one or more data to the hold register |
Two. Register definition description
1. Input register (function code:0x04H)
address | parameter | length | read/write | MIN | MAX | Explain |
30001 | AI1 | 2 | read-only | 0 | 4095 | Analog input channel1 ADConversion value |
30002 | AI2 | 2 | read-only | 0 | 4095 | Analog input channel2 ADConversion value |
30003 | AI3 | 2 | read-only | 0 | 4095 | Analog input channel3 ADConversion value < |
