M MP01512
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The device is a ready-made converter from USB to a 2-wire RS485 interface. Data transmission over the RS485 interface occurs in half-duplex mode (at any given time, either sending or receiving data is possible). From the computer's (USB) side, the device is recognized and handled as a typical serial port. The converter is built on the FT232RL controller from FTDI.
The device features galvanic isolation of the RS485 bus, which is implemented using the modern iCoupler® technology by Analog Devices. The isolation level of the signal line is 2.5kV (RMS). The maximum data transmission speed is 500kb/s. The RS485 bus is protected from voltage spikes using transient voltage suppressors (TVS), and there is additional protection in case of a short circuit between the signal wire and the shield.
The converter is powered via the USB bus, simplifying its usage.
The included drivers (available for download from our website) allow you to write custom communication procedures in the same way as devices transmitting data via the RS232 interface. Typical terminal programs, such as the windowed HiperTerminal, can also be used for computer-side communication. More advanced programmers can opt for the D2XX drivers (USB Direct Drivers + DLL S/W Interface). A major advantage of the converter is the ability to choose nearly any transmission speed, as long as it is the same on both the sending and receiving sides.
WARNING: The USB cable must be purchased separately.
- ANSI TIA/EIA RS-485-A
- ISO 8482: 1987(E)
- DIN EN 60747-5-2 (VDE 0884 Rev. 2): 2003-01
- DIN EN 60950 (VDE 0805): 2001-12
- EN 60950: 2000
- Maximum data transmission speed: 500kb/s
- Communication mode: half-duplex
- RS485 device communication: 2-wire bus + shield connection clamp
- Galvanic isolation of the RS485 bus
- Modern iCoupler® isolation technology by Analog Devices
- Signal line isolation level: 2.5kV (RMS)
- Power track isolation level (internal DC/DC converter): 1kV (DC)
- Operating temperature range of the converter: -40°C to +85°C
- Maximum RS485 network length: 1200m
- RS485 line termination resistor: 120Ω, enabled via a switch
- Receiver input impedance: 96kΩ (up to 256 devices can be connected to the line)
- RS485 bus protection from voltage spikes using transient voltage suppressors (TVS)
- Protection in case of short circuit between signal wire and shield
- USB controller: FT232RL by FTDI
- From the PC side, the device is recognized as an additional serial port.
- Serial UART transmission: 7 or 8 data bits, 1 or 2 stop bits, parity control (none, even, odd, mark, space)
- Buffers: transmit 384 bytes, receive 128 bytes
- Programmable timeout for the receive buffer
- Support for suspension and resumption of operation
- Restart circuit on system startup
- Data transmission mode: USB Bulk or Isochronous
- Ability to store user parameters in non-volatile EEPROM memory
- LED indicators for sending and receiving data
- Powered via the USB interface
- Compatible with UHCI/OHCI/EHCI host controller
- Compatible with USB 1.1 and 2.0
- USB type B female connector