1 Pair Directional RS485/422 Interface Asynchronous Fiber MODEM MM Duplex ST 2KMDescription:
Multimode Optical Fiber 2 km ST Interface Wavelength: 1310 nm
RS-485/RS-422 Interface Optical Fiber MODEM
I. Overview
RS-485/RS-422 interface optical fiber MODEM is a controller connecting remote terminal unit (RTU) to host (HOST) or distributed data acquisition system (SCADA). The product uses optical fiber as transmission medium, which improves the transmission performance of the system and effectively avoids the threat of lightning, surge and electromagnetic interference to communication equipment in harsh environment.
II. Functions and Characteristics
A) Support RS-485/RS-422 interface, asynchronous transmission, point-to-point application, speed up to 120 kbpsB) Support 9V-260V AC/DC power inputC) RS-485/422 supports 32 nodes (128 customizable nodes)D) +/-15KV (Human Model) ESD Protection, +/-8KV Contact DischargeE) Single-mode or multi-mode MODEL (user-customized)F) Working wavelength: 1310 nm (multimode), 1310 nm (single mode)G) Automatic detection of signal rate, zero delay automatic forwarding
III. PERFORMANCE PARAMETERS
Interface: Compatible with EIA RS-485, RS-422 standardTransmission rate: 0-120 KbpsTransmission distance: RS-485/422 port 1200 meters, optical port 2 km, single mode 20 kmWorking environment: - 25 C to 70 C
IV. Appearance Instructions
Interface form: 5-bit terminal (RS-485/422), multi-mode optional ST/SC/FC interface.Single mode adopts FC/SC/ST interfaceLength * width * height: 100mm * 69mm * 22mmShell: Iron ShellColor: Computer WhiteWeight: 230g
V. Pin Definition
RS-422 interfaceT+-RS-422 Sends PositiveT--RS-422 Sends NegativeR+-RS-422 Receiving PositiveR--RS-422 Receives NegativeGND - Signal GroundRS-485 interfaceD+-RS-485 Signal PositiveD--RS-485 signal negativeGND - Signal GroundOptical Fiber InterfaceIN-Optical Fiber InputOUT-Optical Fiber Output
VI. Illustration of IndicatorsPower: Power IndicatorRxD: Fiber Optic Interface Receives Data IndicatorsTxD: Optical Fiber Interface Sends Data Indicators

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