Durable Modbus Protocol Pressure Sensor for Factory Automation

• Customization: Available
• Measuring Medium: Gas
• Model Measuring Core: Ceramic Chip
• Model NO.: SAC-131WX
• Measuring Temperature: -20~50ºC
• Measurement Form: Gauge Pressure, Absolute Pressur
• Measurement Range: -0.1MPa ~ 0MPa ~ 6MPa
• Measurement Accuracy: 0.5%F.S
• Measurement Stability: ±0.2%Fs/Year
• Overload Pressure: 150%Fs
• Operating Temperature: -20~50ºC
• Compensation Temperature: -20~50ºC
• Working Humidity: 95%Rh
• Storage Temperature: -40~85ºC
• Trademark: Aice Tech
• Origin: China
• HS Code: 9026202000

Product Description

Welcome to Jiangsu Aice Instrument Technology Co., Ltd., where innovation meets precision. Explore our state-of-the-art solutions designed to meet your industrial needs.

Product Description

1.INTRODUCTION

Our Industrial Pressure Transmitter seamlessly integrates with the MODBUS communication protocol, adopting a sub-centralized RTU mode and employing the RS485 half-duplex working mode within the MODBUS framework.

Serial Port Configuration: No parity, 8 data bits, and 1 stop bit.
Example Configuration: 9600,N,8,1 - This signifies a baud rate of 9600bps, no parity, 8 data bits, and 1 stop bit.
Supported Serial Baud Rates include: 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200.
CRC Checksum Polynomial: 0xA001.
Data communication adheres to a double-byte data format. For floating-point numbers, it is essential to read the decimal point to ascertain the data's magnitude accurately.

Product Parameters

(1) Example of Read Command Format (03 Function Code)
A. Sending the Read Command Format:

Address	Function Code	Data start(H)	Data start(L)	Data number(H)	Data number(L)	CRC16 (L)	CRC16(H)
0X01	0X03	0X00	0X00	0X00	0X01	0X84	0X0A

B. Example of Returned Read Data Format:

Address	Function Code	Data length	Data(H)	Data(L)	CRC16 (L)	CRC16(H)
0X01	0X03	0X02	0X00	0X01	0X79	0X84

(2) Example of Writing Command Format (06 Function Code)
A. Sending the Write Command Format:

Address	Function Code	Data start(H)	Data start(L)	Data number(H)	Data number(L)	CRC16 (L)	CRC16(H)
0X01	0X06	0X00	0X00	0X00	0X02	0X08	0X0B

1. B. Example of Returned Write Data Format:

Address	Function Code	Data start(H)	Data start(L)	Data(H)	Data(L)	CRC16 (L)	CRC16(H)
0X01	0X06	0X00	0X00	0X00	0X02	0X08	0X0B

1. Exception Response Returns:

Address	Function Code	Exception code	CRC16(L)	CRC16(H)
0X01	0X80+Function Code	0X01(Illegal functions)
		0X02(Illegal data address)
		0X03(Illegal data)

4. Supported Commands and Their Meanings with Corresponding Data:

Function Code	Data start address	Data number	Data bytes	Data range	Command Meaning
0x03 Function code to read data
0x03	0x0000	1	2	1-255	Read slave address
0x03	0x0001	1	2	1200	Baud rate reading

0x03	0x0003	1	2	#### ###.# ##.## #.###	The decimal points represent respectively 0-3 decimal places
0x03	0x0002	1	2	0- Mpa 1- Kpa 2- Pa 3- Bar 4- Mbar 5- kg/cm2 6- psi 7- mh2o 8- mmh2o	Pressure units
0x03	0x0004	1	2	-32768~32767	Measured output Value
0x03	0x0005	1	2	-32768~32767	Transmitter range zero point
0x03	0x0006	1	2	-32768~32767	Transmitter range full point
0x03	0x000C	1	2	-32768~32767	Zero offset value, factory default is 0
0x06 Function code reading data
0x06	0x0000		2	1-255
0x06	0x0001		2	1200 2400 4800 9600 19200 38400 57600 115200	Modify baud rate
0x06	0x000C		2	-32768~32767	Zero offset value Pressure output value = calibration measurement value + zero offset value
0x06	0x000F		2	0-Save to user area 1-Save to factory area
0x06	0x0010		2	1-Return factory parameters

Installation Instructions

When modifying the baud rate, the transmitter will respond with the new baud rate value specified by the host. Once this confirmation reply is sent, the transmitter's baud rate will seamlessly update to the desired setting.
Upon modifying the address, the transmitter will first acknowledge the current address prior to alteration. Following this acknowledgment, the transmitter's address will be updated automatically to the new value.
Executing the 'Save and Reply' factory command will return the original set values, confirming that the transmitter has successfully received and accepted the host's command.
When restoring factory settings, please be aware that the factory defaults may differ from user-defined settings. Consequently, parameters such as address, baud rate, and calibration data might change. It's essential to re-scan the transmitter to recognize these new parameters post-restoration.
Users are permitted to modify only three specific data points: address, baud rate, and zero offset.
For calibration or modification of calibration data, please contact our company to obtain the transmitter's calibration software. Unauthorized attempts to change calibration data via user commands will result in the transmitter outputting an exception code. Always use our recommended calibration software for such adjustments.
If the data you need to read is in floating point format (e.g., 6.000), but the protocol indicates it should be communicated as integer data, you will receive it as 6000. To convert this to the correct format, apply the appropriate decimal point shift. For instance, if the decimal point is 3, you would calculate 6000/10^3 to get 6.000.

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FAQ

1. Q: Can I buy any of your product accessories?

A: Absolutely! Many of our product accessories are available for purchase. However, please note that a few items, due to their patented designs or intellectual property constraints, are not available for sale.
For further details, please contact our sales team.

2. Q: Can I be your exclusive distributor?

A: Certainly! However, this is contingent upon your annual purchase volume and our long-term business relationship. We seek partners who can establish a dependable, long-term relationship with us.
We look forward to fostering a mutually beneficial partnership built on trust.