HART host module, AD5700-1 chip, with isolation, handheld communicator, HART MODEM
model:
5700 Box Module
1 5700 host module + 1 USB to TTL
1 5700 host module + 1 USB to TTL
Note: One end of this product is a standard UART serial interface, and the other end can be directly connected to a HART instrument. Therefore, this product does not provide a schematic diagram, so please don't take it. Hereby declare, please do not ask for it, thank you for your support!
The HART host module uses AD’s AD5700-1 HART chip, with isolation, anti-surge, anti-impact, anti-overvoltage, reliable and stable performance, clean and smooth output waveform, TTL serial output, and simple control. It can be directly connected to the instrument for testing, which is convenient for your secondary development.
1. Application areas:
1. It can be directly connected to the MCU single-chip microcomputer to make the HART handheld programmer;
2. It can be directly connected with the interface chip of RS232 or USB to serial port to make HART modem;
(MAX232, SP232, CP2102, PL2303, FT232, etc.)
3. It is convenient to connect USB to TTL serial port module, or RS232 to TTL serial port module.
4. It can be used for test system integration and process control;
2. Outline size and pin definition (icon):
1. The A and B terminals are not distinguished between positive and negative, and can be directly connected to both ends of the load resistance of the HART smart transmitter;
2. The RST reset pin is generally directly connected to the power supply;
3. RXD, TXD, OCD, RTS connect to TTL serial port;
4. OCD is serial carrier detection, generally not connected. OCD of 1 means that the input waveform amplitude is greater than 120mV, OCD of 0 means less than 80mV;
5. RTS is high, the module is in demodulation mode, otherwise it is in modulation mode. It can be connected to an IO pin when connected to a microcontroller;
6. R/T is the transceiver indicator, the blue LED flashes when working;
7. PWR is the power indicator, the red LED is always on after the power is turned on;
8. Input power range: 2V～5.5VDC. (Generally recommended to use 3V, 3.3V, 3.6V or 5VDC)
A USB to TTL port module, combined with a 5700 host module, can quickly build a HART weekly modem based on the USB virtual south port, which is simple and easy to use.
The wiring is as follows:
7. Short-circuit +5V and Vio on the USB to TTL board.
2. +5V-----Vald3.+5V------RST4.CD-------OCD
5.Tx----TXD
6. RTS-------RTS
7Rx-------RXD
8.GND------GND
7. Short-circuit +5V and Vio on the USB to TTL board.
2. +5V-----Vald3.+5V------RST4.CD-------OCD
5.Tx----TXD
6. RTS-------RTS
7Rx-------RXD
8.GND------GND
Packing: 1pc
Warranty period: 120
