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- UT-277SM fiber optic modem supports asynchronous RS-232/485/422 communication. It is the best choice to connect remote terminal unit (RTU) with HOST or SCADA controller. It supports RS-232/485/422 asynchronous protocols; it can be mixed and matched to use 2 RS-232, RS-485 or RS-422 ports, and it supports 2 wires (half-duplex) RS-485 and 4 wires (full-duplex) RS-422 mode. The RS-485 mode supports data transmission (TXD or SD) control, this enhance the adaptation to most of the software.
- Fiber optic MODEM supports lots of optic connection between asynchronous serial ports. It supports 2 asynchronous serial devices to communicate under full-duplex or half-duplex via optic fiber; the communication distance can be as far as 4km at multimode, and 20km at single mode.
- The fastest transmission rate for RS-232 can be 115.2Kbps, and for RS-485/422 can be 460Kbps. Ports with different electronic standards can be mixed and matched to use; it is without problem to connect RS-232 devices with RS-485/422 devices. This is a good replacement of RS-232 to RS485/422 converter, which with EMI/RFT features.
- UT-277SM supports two signal data transmission: transmit and receive data. At the same time, it is with RS-485/422 data transmission auto control circuit; Zero delay conversion; all the serial ports is connected via terminal block.
Usual you need to use 2 pieces UT-277 at the same time.
Model: (Pls leave the message which interface you need)
277SM : single mode (Transmission distance 20KM)
277MM: multimode (Transmission distance 4KM)
Interface optional: SC; ST; FC
Power plug standard: US standard ; EU standard (If you need UK standard plug, please contact us or leave a message.)
Package included: 2pcs x UT-277
- Supports point to point (point to multi point) connection
- Supports RS-232,RS-422,RS-485 protocol
- RS-232, RS-485/422 working at the same time
- Supports 2 bits (half-duplex) & 4 bits (full-duplex) RS485 operating mode
- Transmission rate: 460kbps
- Interface: with optional SC, FC, ST
- Supports master-slave mode
- Slave mode: can be worked as Hub
- Supports RS-232/RS-485/RS-422 ports
- Asynchronous transmission: point to point, 460kbps
- Transmission distance: multimode: 4,000m,
- Single mode: 20,000/40,000m
- Wavelength: 1,310nm (multi mode), 1,310nm/1,550nm (single mode)
- Interface: RS-232: Terminal block; RS-485/422: Terminal block
- Fiber port: with optional SC/FC/ST
- RS-232: standard RS-232 3 wires ±15KV ESD protection, as high as 115.2kbps transmission rate.
- Input voltage: DC9-48V 200mA
- RS-485/422: auto negotiation, no need switch setting, ±15KV ESD protection
