What does MAX485 do?
MAX485 transceiver draws supply current of between 120μA and 500μA under the unloaded or fully loaded conditions when the driver is disabled. The driver is limited for short-circuit current and the driver outputs can be placed at a high impedance state through the thermal shutdown circuit.
What is MAX485 TTL?
The MAX485 TTL To RS485 Module converts TTL signal to RS485 for long range, high data rate error prone differential communication. Digital communications networks implementing the EIA-485 standard can be used effectively over long distances and in electrically noisy environments.
What is MAX485 IC?
The MAX485 is low-power transceivers for RS-485 and RS422 communication. Each part contains one driver and one receiver. The driver slew rates are not limited, allowing them to transmit up to 2.5Mbps. These transceivers draw between 120µA and 500µA of supply current when unloaded or fully loaded with disabled drivers.
What is RS-485 in microcontroller?
The Rs-485 is one of the serial communication protocol that is used to send and receive data bit-by-bit sequentially through a serial cable. It consists offour wires: Tx+,Tx_, Rx+ and Rx- as a twisted pair cable.
What is MAX485 module?
On-board MAX485 chip is a low-power and slew-rate-limited transceiver used for RS485 communication. Adopting Half-Duplex communication to implement the function of converting TTL level info into RS485 level, can achieve a maximum transmission rate of 2.5 Mbps.
What does transceiver mean?
A transceiver is a combination transmitter/receiver in a single package. While the term typically applies to wireless communications devices, it can also be used for transmitter/receiver devices in cable or optical fiber systems.
What is the rs485 protocol?
RS-485 is used as the physical layer underlying many standard and proprietary automation protocols used to implement industrial control systems, including the most common versions of Modbus and Profibus. DH 485 is a proprietary communications protocol used by Allen-Bradley in their line of industrial control units.
What protocol is RS485?
What is RS485 in microcontroller?
How do I use RS485 on Raspberry Pi?
This RS-485 Shield is a standard add-on board for Raspberry Pi. It is integrated with simple screw terminal as well as DB9 interface….Hardware
- Plug the RS-485 Shield for Raspberry Pi into the Raspberry Pi.
- Connect the 485-A to 485 wire A, connect the 485-B to 485 wire B.
- Power the Raspberry Pi with micro-usb cable.
What is a transceiver module used for?
An Optical transceiver module is the core part of optical communication devices. It uses fiber optical technology to send and receive data through completing the process of optical signal – electrical signal / electrical signal – optical signal conversion.
What are the types of transceiver?
There are many types of transceivers: RF transceivers, fiber-optic transceivers, Ethernet transceivers, wireless (WAP) transceivers, and more. Though each of these media types is different, the function of the transceiver remains the same.
What type of signal is RS485?
RS-485 is a duplex communication system in which multiple devices on the same bus can communicate in both directions. RS-485 is most often used as half-duplex, as shown in the figures above, with only a single communication line (‘A’ and ‘B’ as a pair).
Is RS485 and Modbus same?
Is Modbus the same as RS485? The answer is no, because both of these are relative concepts that need each other in order to fulfil their purposes. Modbus defines the protocol type and RS485 defines the signal level on the protocol.
Does Raspberry Pi have RS485?
The RS485 Pi contains protection against voltage spikes in the form of a TVS Diode and two 10-Ω, Pulse-Proof Thick-Film Resistors. Please note that you can only use one RS485 Pi board on a Raspberry Pi.