Ediseja 21 CMU 200 User Manual download pdf (Page 8)

CMU 100 - RS232 to 7x, 6x, 5x, 4x Multimode Fiber Optic Star

3 RS232 TO 7x MULTIMODE FIBER OPTIC STAR

COUPLER

3.1 DESCRIPTION

Star coupler is communication device that transfer data from one (master) to more than one

(slave) port. Example is when we need access to one device with several PCs. It can also be

used when communication from PC to multiple devices is needed.

This device contains one ful duplex RS232 interface (master) and seven 820 nm wave lenght

multimode fiber optic (slaves). Data is send from master port to all slave ports. On the other

hand, data from either slave port is send to master port only.

Wide power supply voltage allows connection to all common station batteries. Additionaly it can

be also connected to standard AC voltages.

This device is intended for use in cubicles and cabinets in all kinds of power production,

transmission and distribution stations. It requires no maintenace. All normaly used connectors,

switches and light indicators are accessed at the front side of the device. One light indicator

indicates power supply voltage, others indicate communication transfer.

Fiber optic communication allows longer distances between devices without electromagnetic

disturbances. Fiber optic logic can be set to positive or negative logic for transmitter and receiver

separatedly. They can be set by DIP switch at the front side of the communication interface.

3.2 TYPICAL APPLICATIONS

Typical application is communication with PC with SCADA application, in control room and

protection relays, power meters, etc with RS232 interfaces, in switchgear, without

electromagnetic disturbances.

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Ediseja 21 CMU 200 User Manual Page 8