Model271_UserManual
Contents
1. MODEL271 all other Slaves are to Slave MODEL271 Shenzhen 3onedata Technology Co Ltd www 3onedata com SEEN 30nedata SONEdata Communication Specification Parameter Standard EIA RS 232 RS 485 RS 422 Transfer rate 0 120K bps auto sense signal rate Transmission RS 232 port 15m RS 485 422 port 1200m Optic port multi mode 2 5KM Single mode 20 120KM Type RS 232 485 422 interface adopt 8 bit terminal block optic port SC ST or FC Environment Operating temperature 30 C to 70 C Storage temperature 40 C to 85 C Humidity Relative humidity 5 to 95 Power supply Power input 9V 36V DC consumption 2W Dimension HX W XL 100mm X 69mm X 22mm Shell Iron Color White Weight 230g Installation MODELI271 provides DIN rail and wall mounting two types of installation our Installation size Model 271SM Universal RS 232 485 422 Interface Asynchronous Fiber Modem 24 8 mm 43 2 mm 100 m 91 2 mm Shenzhen 3onedata Technology Co Ltd www 3onedata com2. RS 485 422 T D RS 422 TXD RS 485signal T D RS 422 TXD RS 485signal R RS 422 RXD R RS 422 RXD GND GND RS 232 IN RS 232 input RX OUT RS 232 output TX GND GND Optic Fiber port IN Fiber input OUT Fiber output LED Indicator light MODEL271 has 3 indicator light It is convenient for your project Power Redlight ON power is ON RxD Green light Blinking when fiber is transmitting data TxD Green light Blinking when fiber is receiving data Type application Loop road application As users require MODEL271 can connect multi equipment with the same or different interface to the same loop road Master and Slave communication theory 1 Master send data When Master send data from OUT port because MODEL271 support loop at the same time of slave s RTU1 received the data the data send from RTU1 s send port to the next Terminal Unit RTU2 S receive port In turn all Slave receive the data from Master but because MODEL271 is half duplex working mode Master s input port do not receive data 2 Slave send data When Slave send data data come to Master pass loop from send port Master do not send data For example RTU2 send data data come to Master from RTU3 RTU3 and Master receive the data but RTU1 did not receive the data RTU RTU2 RTUn CE CE CE _ es i o Slave 5 fz oO Note When loop application only one Master allow to Master
3. ium SECURITY Fiber cannot be tapped by conventional electric means and is very difficult to tap into optically Furthermore radio and satellite communication signals can be captured easily for decoding RELIABILITY amp MAINTENANCE Fiber is immune to adverse temperature and moisture conditions does not corrode or lose its signal and is not affected by short circuits power surges or static electricity accidentally connecting the power cables to the wrong terminal Package Checklist 1 Package Checklist Before you start to install the converter please verify that the package contains the following set of MODEL271 J User Manual Please notify your sales representative immediately if any of the aforementioned items is missing or damaged Function and Characteristic Extend RS 232 485 422 transmission distance up to 120 km with single mode up to 2 km with multi mode Decrease signal interference Ring structure or point to point structure Protect against electronic degradation and chemical corrosion Supports a baud rate up to 500 Kbps Extended operating temperature from 30 to 70 C PIN Define MODEL271 RS 232 485 422 interface adopt 8 bit terminal block the power is 2 bit terminal block optic port is SC ST or FC optional Shenzhen 3onedata Technology Co Ltd www 3onedata com wa kam ata 3onedata Communication RS 485 4224 RS 232 ag ad a I N ZO FT 2222 DCIN 9 36 VDC input GND GND
4. v SEEN kam ata 3onedata Communication MODEL 271 RS 232 485 422 Fiber Modem User manual Shenzhen 3onedata Technology Co Ltd Add 3 F B 2 Jiuxiangling Industrial District Xili Town Nanshan District Shenzhen 518055 China Website www 3onedata com Tel 0086 755 26702688 Fax 0086 755 26703485 E mail sales 3onedata com Shenzhen 3onedata Technology Co Ltd www 3onedata com aA G 3onedata Communication Overview MODEL271 is a sort of more function and economy RS 232 485 422interface optic fiber modem It is the best choice to connect RTU to HOST or SCADA controller It used optic fiber as transfer medium increase the transfer function of system Communication equipment abstain menace effective to lightning strike surge electromagnetism disturb under the bad environment MODEL271 have the style of Multi mode Single mode support loop connection and can used for repeater to extend distance Note When ordering Please choice multi single mode and Master Slave model Why Convert Serial to Fiber Fiber communication not only extends the communication distance but also provides many advantageous features IMMUNITY FROM ELECTRICAL INTERFERENCE Fiber is not affected by electromagnetic interference or radio frequency interference It provides a clean communication path and is immune to cross talk INSULATION Optical fiber is an insulator the glass fiber eliminates the need for using electric currents as the communication med
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Model271_UserManual