1 Product Overview
DAQ-GP-DCHS485 Transmitter Acquisition Device is an industrial-grade, compact, and portable intelligent DC power transmitter with fast, stable, and high-precision performance launched by Shanghai Data Acquisition IoT Technology Co., Ltd.
Application fields: It is widely used in fields such as electric power, communications, transportation, environmental protection, petrochemicals, and steel to monitor the current or voltage consumption of AC and DC equipment. It features a standard RS-485 digital interface output, enabling interconnection with upper computers such as computers, PLCs, industrial gateways, and touch screens.
2 Order Specifications and Model Selection
Special customization of three parameters is supported: input range, output type, and working power supply.
3 Service Philosophy
Our company solemnly promises:
What you purchase is not only the product, but also meticulous and thoughtful technical support services!!!( =^_^= )
This product can be installed by ordinary workers on-site with only power connection! No debugging is required!
We provide free remote guidance and remote configuration and debugging services, and send data to the cloud platform designated by users.
As an expert in industrial data acquisition, Data Acquisition IoT provides free IoT solution consulting services!
4 Product Characteristic Parameters
4.1 Communication Characteristics
Serial communication adopts RS485, with a default address of 1, baud rate of 9600, 8 data bits, 1 stop bit, and no parity.
4.2 Terminal Definition
Facing the 4p terminal: GND, 485B, 485A, +12V (+E)
Terminal diagram:
4.3 Features and Functions
Adopting new electromagnetic isolation technology, photoelectric isolation technology, and low power consumption
Industrial-grade imported chips with professional algorithms, high precision
Equipped with automatic thermal switch-off and ESD protection functions
4.4 Electrical Characteristics
Operating power supply: DC12 - DC24V, DC
Power consumption: less than 5W
4.5 Operating Environment
Operating temperature: -20° ~ 80°C
4.6 Installation Methods
Standard guide rail installation, plane screw fixation, detachable split structure, PCB welding installation, etc.
5 Core Advantages of the Product
u Simple installation, rapid deployment, facilitating the rapid implementation of IoT projects
u Supporting external connection of multiple sensors
u Non-intrusive collection, without affecting the normal operation of equipment
6 Register Description
register address | Register contents | Number of registers | Register state | Data range |
0056H | Single circuit power | 1 | read-only
| 0~10000 |
0010H | First circuit power | 1 | read-only | 0~10000 |
0011H | Second circuit power | 1 | read-only | 0~10000 |
0012H | Third circuit power | 1 | read-only | 0~10000 |
0057H | address | 1 | read/write | 00H - FFH |
0020H | baud rate | 1 | read/write
| 03H – 0B H |
Instructions: 1. When the transmitter input is dual-channel, take the electrical quantity of the first channel and the electrical quantity of the second channel. 2. For a dual-channel input where the transmitter input is a combination of current and voltage, the first channel is voltage data and the second channel is current data. 3. For transmitters with multiple inputs such as two or three channels, if it is necessary to read the electrical quantity of a certain channel separately, just read the register corresponding to that channel separately, and set the number of registers to 1. (For example: If you only need to read the electrical quantity of the third channel and do not want to read the first and second channels, send the downlink command as: 01H 03H 00H 12H 00H 01H)
6.1 Example of Data Reading Command for Single-Input Transmitter
slave address | functi on code | Start Register Address | Number of registers | CRC | CRC |
01H | 03H | 00H | 56H | 00H | 01H | 64H | 1AH |
come back：
slave address | function code | Start Register Address | A/D-H | A/D-L | CRC | CRC |
01H | 03H | 02H | 24H | F6H | 23H | 02H |
6.2 Dual-input Transmitter
slave address | function code | Number of start registers | Number of registers | CRC | CRC |
01H | 03H | 00H | 10H | 00H | 02H | C5H | CEH |
come back
slave address | function code | Number of bytes in the data area | D | Second circuit power | CRC | CRC |
A/D-H1 | A/D-L1 | A/D-H2 | A/D-L2 |
01H | 03H | 04H | 1FH | 3FH | 0AH | 74H | CBH | 6CH |
6.3 Three-way Input Transmitter
slave address | function code | Start Register Address | Number of registers | CRC | CRC |
01H | 03H | 00H | 10H | 00H | 03H | 04H | 0EH |
come back:
slave address | function code | Number of bytes in the data interval
| First circuit power | Second circuit power | Third circuit power | CRC | CRC |
A/D-H1 | A/D-L1 | A/D-H2 | A/D-L2 | A/D-H3 | A/D-L3 |
01H | 03H | 06H | 1EH | AFH | 1EH | 1CH | 1EH | B1H | F8H | E9H |
6.4 修改地址
cslave address | function code | Start Register Address | Number of registers | Number of data bytes | Write data to registers | CRC | CRC |
01H | 10H | 00H | 57H | 00H | 01H | 02H | 00H | 02H | 2AH | 76H |
come back:
6.5 Modify the baud rate
slave address | function code | Start Register Address | Number of registers | byte count | Data to be written to registers | CRC | CRC |
01H | 10H | 00H | 20H | 00H | 01H | 02H | 00H | 05H | 61H | 33H |
6.6 Baud Rate Encoding
03H | 1200 bps |
04H | 2400 bps |
05H | 4800 bps |
06H | 9600 bps |
07H | 19200 bps |
08H | 28800 bps |
09H | 57600 bps |
0A | 38400 bps |
0B | 115200bps |
广播地址 | FA |
7 Applications
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