Model 2128

RS-485 Multidrop Fiber Optic Modem for SCADA Applications

Fiber ports repeat data through the 2128 and drop/insert data on the RS-485 port. The RS-485 port inserts data onto both fiber ports and gets data dropped from either fiber port. Ideal for industrial SCADA applications.

Specifications

Operating Mode:	Synchronous half duplex
Input/Output Interface:	RS-485, 2 wire port operating up to 200 Kbps
Transmission Line Interface:	ST connectors are standard for interfacing with fiber optic duplex cable (SMA option)
Optical Power into a 62.5 Micron Core Optical Fiber:	10 microwatts, 13 dB power budget @ 850 nanometers (1300 nm option)
Receiver Sensitivity:	500 nanowatts at less than 10-9 bit error rate. 10 microwatts max.
Operating Temperature:	0°C to 50°C
Metal Enclosure:	5.5 x 2.3 x 1.0 in (with flange) (13.97 x 5.84 x 2.54 cm) Panel or DIN rail mounting option
Weight:	0.4 lbs (182 grams)
Input Power:	External with power supply (S.I. Tech #2121 - 110 VAC to 12 VDC)
230 Volt Version:	Use S.I.Tech 2164 power supply

RS-485 Connector

Operating Distance for Fiber Optic Cable

Ordering Information