CEM Engineering Pte Ltd

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Data Communication Product


USB to RS232 Converter

RS232 to RS485 Converter



In order to carry through remote digital communication between computers with various standard series interfaces converter facilities or intelligent instruments, it needs inter exchange of standard series interface converter of compatible RS-232C and RS-485 standard is able to convert mono-end RS-232 signal to balance difference RS-485 signal and extend the communication distance to 1.2km. No external power need.There by in guarantees the function under RS-485 without changing the program compiled under RS-232 half-duplex mode and assures the adaptation to current operation software and interface hardware. The transmission rate of 300-115.2kbps.Iscapable of applying between host computers, host computer and is extensions or external equipment and forms dot to dot, dot to dots remote and multi-communication network, It implements multi-machine resp onse communication and commonly used in systems of industrial automation control all-one-card. Door safe, car parking, ATM, bus charge, eatery sell out, staff attendance management, and toll highway etc.

Capabilities Parameter

Interface feature: RS-232C,RS-485standard interface
compatible with EIA,TIA
Electric interface: RS-232 end DB9 hole connector, RS-485 end DB9 needle connector,with connectionpole
Working mode: asynchronism half-duplex difference transmission
Transmission media: twisted-pairorSTP
Transmission rate: 300-115.2 KBPS
External discharge dimension: 63mmX33mmX17mm
Working circumstance: -25 to 70 degreeC, relativehumidity 5% to 95%
Transmission distance: 1,200m (RS-485end), 5m(RS-232end)