| Technical parameter | Parameter value |
| Brand | SONBEST |
| Radioactivity measuring range | 0~2000W/M2 |
| Radioactivity allow deviation | ±7% |
| Repeatability test | ±5% |
| Radioactivity detection chip | Import digital |
| Wavelength range | 380nm~730nm |
| Interface | RS485/4-20mA/DC0-10V |
| Power | DC5~24V 1A |
| Power | DC12~24V 1A |
| Running temperature | -30~85℃ |
| Working humidity | 5%RH~90%RH |
Product Selection
Product DesignRS485,4-20mA,DC0-10VMultiple output methods, the products are divided into the following models depending on the output method.
| Product model | output method |
| SM9562B | RS485总线 |
| SM9562M | 4-20mA |
| SM9562V10 | DC0-10V |
Communication Protocol
The product uses RS485 MODBUS-RTU standard protocol format, all operation or reply commands are hexadecimal data. The default device address is 1 when the device leaves the factory, and the module or NON-Recorder default baud rate is 9600,8,n,1 ,but data recorder default baud rate is 115200 .
1. Read data (function code 0x03)
Inquiry frame (hexadecimal), sending example: query 1 data of 1# device, the upper computer sends the command: 01 03 00 00 00 01 84 0A .
| Address | Function Code | Start Address | Data Length | Check Code |
| 01 | 03 | 00 00 | 00 01 | 84 0A |
For the correct query frame, the device will respond with data: 01 03 02 00 79 79 A6 , response format:
| Address | Function Code | Length | Data 1 | Check Code |
| 01 | 03 | 02 | 00 79 | 79 A6 |
Data description: The data in the command is hexadecimal, take data 1 as an example, 00 79 is converted to decimal value as 121, assuming the data magnification is 100, then the real value is 121/100=1.21, Others and so on.
2. Common data address table
| Configuration Address | Register Address | Register Description | Data Type | Value Range |
| 40001 | 00 00 | Radioactivity | Read Only | 0~65535 |
| 40101 | 00 64 | Model Code | Read/Write | 0~65535 |
| 40102 | 00 65 | total number of measuring points | read/write | 1~20 |
| 40103 | 00 66 | device address | read/write | 1~249 |
| 40104 | 00 67 | baud rate | read/write | 0~6 |
| 40105 | 00 68 | communication mode | read/write | 1~4 |
| 40106 | 00 69 | protocol type | read/write | 1~10 |
For example, the range is 7~30W/M2, the analog output is 4~20mA current signal, Illuminance and current The calculation relationship is as shown in the formula: C = (A2-A1) * (X-B1) / (B2-B1) + A1, where A2 is Illuminance range upper limit, A1 is the lower limit of the range, B2 is current output range upper limit, B1 is the lower limit, X is the currently read Illuminance value, and C is the calculated current value. The list of commonly used values is as follows:
| current(mA) | IlluminanceValue (W/M2) | Calculation Process |
| 4 | 7.0 | (30-7)*(4-4)÷(20-4)+7 |
| 5 | 8.4 | (30-7)*(5-4)÷(20-4)+7 |
| 6 | 9.9 | (30-7)*(6-4)÷(20-4)+7 |
| 7 | 11.3 | (30-7)*(7-4)÷(20-4)+7 |
| 8 | 12.8 | (30-7)*(8-4)÷(20-4)+7 |
| 9 | 14.2 | (30-7)*(9-4)÷(20-4)+7 |
| 10 | 15.6 | (30-7)*(10-4)÷(20-4)+7 |
| 11 | 17.1 | (30-7)*(11-4)÷(20-4)+7 |
| 12 | 18.5 | (30-7)*(12-4)÷(20-4)+7 |
| 13 | 19.9 | (30-7)*(13-4)÷(20-4)+7 |
| 14 | 21.4 | (30-7)*(14-4)÷(20-4)+7 |
| 15 | 22.8 | (30-7)*(15-4)÷(20-4)+7 |
| 16 | 24.3 | (30-7)*(16-4)÷(20-4)+7 |
| 17 | 25.7 | (30-7)*(17-4)÷(20-4)+7 |
| 18 | 27.1 | (30-7)*(18-4)÷(20-4)+7 |
| 19 | 28.6 | (30-7)*(19-4)÷(20-4)+7 |
| 20 | 30.0 | (30-7)*(20-4)÷(20-4)+7 |
As shown in the above formula, when measuring 8mA, current current is 9.75W/M2。
For example, the range is 7~30W/M2, the analog output is 0~10V DC0-10Vvoltage signal, Illuminance and DC0-10Vvoltage The calculation relationship is as shown in the formula: C = (A2-A1) * (X-B1) / (B2-B1) + A1, where A2 is Illuminance range upper limit, A1 is the lower limit of the range, B2 is DC0-10Vvoltage output range upper limit, B1 is the lower limit, X is the currently read Illuminance value, and C is the calculated DC0-10Vvoltage value. The list of commonly used values is as follows:
| DC0-10Vvoltage(V) | IlluminanceValue (W/M2) | Calculation Process |
| 0 | 7.0 | (30-7)*(0-0)÷(10-0)+7 |
| 1 | 9.3 | (30-7)*(1-0)÷(10-0)+7 |
| 2 | 11.6 | (30-7)*(2-0)÷(10-0)+7 |
| 3 | 13.9 | (30-7)*(3-0)÷(10-0)+7 |
| 4 | 16.2 | (30-7)*(4-0)÷(10-0)+7 |
| 5 | 18.5 | (30-7)*(5-0)÷(10-0)+7 |
| 6 | 20.8 | (30-7)*(6-0)÷(10-0)+7 |
| 7 | 23.1 | (30-7)*(7-0)÷(10-0)+7 |
| 8 | 25.4 | (30-7)*(8-0)÷(10-0)+7 |
| 9 | 27.7 | (30-7)*(9-0)÷(10-0)+7 |
| 10 | 30.0 | (30-7)*(10-0)÷(10-0)+7 |
As shown in the above formula, when measuring 5V, current DC0-10Vvoltage is 11.5W/M2。