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[China]
Trade Verify
Address: 701, Yongchang Building, Xicheng Industrial Zone, Xixiang, Bao'an District, Shenzhen, China 518126
Contact name:Sunny
Shenzhen Qianhai Lensen Technology Co., Ltd |
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LS-RAI04 wireless analog acquisition module
LS-RAI04 Modbus RTU is a 1W I/O module, 4 analog inputs, 1 RS485
(wireless RS485 customizes). Wireless control 2km-3km. Use for
sensor data wireless collection.
Character:
Transparent I/O System
Not need internet, no third party cell, no monthly fees
You have full control over your own carrier
Real time status feedback from the remote site
Fast installation and easy setup
Paramaeter
| Frequency | 433MHz or 450MHz or 470MHz |
| Power output | 1W |
| Products | 4AI |
| Input type | 4-20mA or 0-5V or 0-10V |
| Output type | 4-20mA or 0-5V or 0-10V |
| Resolution ratio | 24 bit |
| Accuracy | ±0.02% |
| Power supply | 9-36V DC usually use 24V DC |
| Interface | RS-485 |
| Channel No. | 15ch default, can program via DIP switch |
| Antenna | Sucker antenna with 1.5m cable |
| Working temperature | -35 °C~+75 °C industrial |
| Working humidity | 10%-90% relative humidity, no condensation |
| Dimension | 115×90×40(mm) |
| Fix way | Standard 3.5 inch industrial DIN guild rail |
Advantage of wireless solution
- No wires to bury or maintain, no need to drill holes on wall
- Reliable communication in all direction,any terrain, regardless
of hills, walls, trees
- Cost saving in installation and maintenance
- Radio/Lora based, no need internet and monthly fee, full
ownership of the system
- 4G based, high speed, no distance limit
Lensen Wireless RTU features
- Portable device, DIN-rail mounting for easy installation
- Isolated inputs
- LEDs for power supply, communication, input, output status
- Flexible networking, point to point or point to multipoints
- DIP to change different modes
- Different types of I/O, DI, DO, AI, AO are available
- I/O expandable
- Short delay time
- Easy handing on RS485 network, support Modbus RTU protocol
- Support on-line upgrade. Can configure by customer in setting
mode
Modbus RTU communication and corresponding value
Register types:
| Register types | Read command | Write command | Power off | Function |
| Hold register | 0x01 | Input --not support | Not keep | Can read input value |
| 0x03 |
A. Hold register
1. Analog input value: 0x0008~0x000B
2. Analog output value: 0x0048~0x004B
B: How to read
Hold register: can read 4 analog input or control 4 analog output
at one time
Register control way
| AI/AO | IC | Read/ | Function ID | items support | ||
| No. | IC Type | PLC ID | Modbus ID | |||
| AI1 | Hold register | 40009 | 8 | Read | 03 | 2AI/4AI |
| AI2 | Hold register | 40010 | 9 | Read | 03 | |
| AI3 | Hold register | 40011 | 10 | Read | 03 | 4AI |
| AI4 | Hold register | 40012 | 11 | Read | 03 | |
| AO1 | Hold register | 40073 | 72 | Read/write | 03/06 | 2AO/4AO |
| AO2 | Hold register | 40074 | 73 | Read/write | 03/06 | |
| AO3 | Hold register | 40075 | 74 | Read/write | 03/06 | 4AO |
| AO4 | Hold register | 40076 | 75 | Read/write | 03/06 | |
About value calculation
Analog input
Our analog module’s max measure range value is : 0X7FFF
1. Directly measure current and voltage
Exact value=value you read/0x7FFF*max range
For example: to read the 1st passage of module’s (with max range of
0-20mA) input value
Register 0x0008(analog input of the 1st passage)
Feedback: 0x3801
Current value: (0x3801/0x7FFF)*20mA=8.7509mA
2. To measure sensor’s value(4-20mA, 0-6 meter level sensor)
If feedback value is less than 6554, level value is 0
If feedback value is bigger than 6554, level value=(value
read-6554)/(32767-6554)*measure ranges
For example: feedback value is 0X3801, then corresponding level
value is: ((0X3801-6554)/26213)*6 meter=1.7815 meter
Analog output
Analog module’s max measure range is: 0x7FFF
Directly control output current and voltage
Write register value=current or voltage value/measure range*0x7FFF
For example: to control the 1st passage of analog module whose max
measure range is 0-20mA
Register 0x0048 (analog output of the 1st passage)
To write register value:(8.75/20mA)*0X7FFF =14336=0x3800
