Modbus Protocol Ceramic Pressure Transmitter

• Measuring Medium: Gas
• Model Measuring Core: Ceramic Chip
• Measuring Temperature: -20~50ºC
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: SAC-131WX
• 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 cutting-edge technology meets unparalleled precision. Our dedication to innovation ensures that our products, such as the Modbus Protocol Ceramic Pressure Transmitter, set the benchmark in the industry.

Product Description

1. INTRODUCTION

Our Modbus Protocol Ceramic Pressure Transmitter adheres to the distinguished MODBUS communication standards. It operates efficiently under the sub-centralized RTU mode, utilizing RS485 half-duplex working mode to ensure seamless communication and optimal performance.

Serial port configuration is meticulously set to: no parity, 8 data bits, 1 stop bit, ensuring reliable and stable data transmission.
Example Configuration: 9600,N,8,1 translates to 9600bps baud rate, no parity, 8 data bits, and 1 stop bit, providing a standard and dependable setup.
This versatile transmitter supports an array of serial baud rates, including: 1200, 2400, 4800, 9600, 19200, 38400, 57600, and up to 115200, accommodating various communication needs.
For error-checking, the transmitter employs a CRC checksum polynomial of 0xA001, ensuring data integrity and accuracy.
The data communication process handles all data in double-byte format. For data identified as floating-point numbers, the decimal point must be read to accurately determine the value and magnitude.

Product Parameters

(1) Exemplary Read Command Format (03 Function Code)
A. Transmit 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. Receive Data in the Read Format: Example

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

(2) Exemplary Write Command Format (06 Function Code)
A. Transmit 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. Receive Data in the Write Format: Example

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. Handling Exception Responses and 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. Overview of Supported Commands and Their Significance

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

To modify the baud rate, the transmitter will acknowledge by sending back the baud rate provided by the host. Once acknowledged, the transmitter's baud rate will seamlessly transition to the new specified value.
When changing the address, the transmitter will first respond with the current address. Following this acknowledgement, the transmitter will automatically update to the new address value.
Issuing the save and reply factory command will return the original data value, confirming that the transmitter has successfully accepted the host's command.
Please note, when restoring factory settings, the pre-saved factory parameters may differ from user-specific settings. Therefore, the address, baud rate, and calibration data may change. Ensure to re-scan the transmitter after restoring factory defaults.
Users are permitted to modify only three specific data points: address, baud rate, and zero offset.
For calibration or adjusting calibration data, please contact our company to obtain the transmitter's calibration software. Unauthorized command modifications by the user will result in a command exception code from the transmitter. Only use our provided calibration software for such operations.
When reading data identified as a floating point number, such as 6.000, note that the protocol communicates this data as integer values. For example, 6000 is read instead of 6.000, and to convert, divide by 10 raised to the decimal places, e.g., 6000/10^3 yields 6.000.

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FAQ

1. Q: Are your product accessories available for purchase?

A: Absolutely! Most of our accessories are available for purchase. However, please note that certain items with patented designs or exclusive intellectual property rights may not be available.
For further details and specific inquiries, please reach out to our dedicated sales team.

2. Q: Is it possible to become an exclusive distributor for your products?

A: Certainly! However, this privilege is primarily based on your annual purchase volume and our long-term business relationship. We seek committed business partners who can establish and maintain mutual trust over the long term.