XSC08-4-Q：8 Channel Analog RS485 Acquisition

1、 Product Description
XSC08-4-Q is an 8-channel 12 bit high-precision analog acquisition terminal independently developed by Shenzhen Xiayu Technology Co., Ltd. Each channel can select the analog type (or range) through internal jumpers: 0~5V; 0~10V; 0~20mA， The collection accuracy is 0.1%. The acquisition board is equipped with one relay output, which can output switch signals. The acquisition board is equipped with one isolated RS485 communication interface, through which data can be uploaded. This module has two types of Modbus RTU protocol and custom protocol, with three data output formats: 16 bit unsigned integer ADC value output (range: 0~4095), 16 bit unsigned integer value output, and 32-bit standard IEEE-754 floating-point output, making it flexible and convenient to use.
2、 Product Features
8-channel acquisition can switch freely between 0-5V/10V/20mA;
Support scaling and bias (y=kx+b)
ModBus RTU protocol
RS485 communication isolation
1 relay output
Collection accuracy 0.1%
Working temperature: -40~85 ℃

3、 Technical parameters

NO	Name	Parameter
1	product model	XSC08-4-Q
2	Voltage	7~30VDC
3	Power  current	<30mA（12V）
4	CPU	32Bit high-performance
5	ADCresolution	12 bit
6	acquisition accuracy	0.1%
7	Voltage acquisition range	0~5V；0~10V；0~20mA；Select through jumper wires (note required during procurement)
8	RS485	Power isolation, signal isolation;
9	temperature drift	±0.005%/℃
10	ADCrefresh cycle	40ms
11	relay	10A/220V;
12	operation temperature	-40℃~85℃
13	RESET	1~5s：reset；>5s：Restore factory parameters
14	Factory parameters	Module address：1；RS485：9600，8，N,1

Interface protection:
Power supply/RS485, true industrial grade EMC protection
IEC 61000-4-5 Surge: Power supply: ± 2KV; Signal: ± 2KV
IEC 61000-4-2 ESD: Contact: ± 8KV; Air: ± 15KV
IEC 61000-4-2 EFT: Power supply: ± 4KV; Signal: ± 2KV

Scaling and biasing functions:
By scaling and biasing, the engineering physical quantity value can be directly read, which corresponds to the engineering quantity register. For example, the 0-5V type engineering quantity is transformed from the 0-5V 32-bit IEEE-754 floating-point format register using the transformation formula y=kx+b, where y is the value of the engineering quantity register, x is the value of the 0-5V 32-bit IEEE-754 floating-point format register (unit: V), k is the scaling factor, and b is the bias. Both k and b can be configured by writing registers. For example, if a linear temperature sensor outputs 0-5V and measures a temperature range of -20~120 ℃, the calculated relationship between temperature and voltage is y=28x-20, that is, k=28, b=-20. By configuring k and b to the collector first, it is possible to directly read the engineering quantity value (in this example, temperature value, in ℃)

Structural dimensions: 115 * 90 * 40mm

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