RCS COMMSTAR RS-485 ACTIVE HUB, 8 CHANNEL COMMSTAR NETWORK STAR WIRING HUB RCS CommStar Control Units can connect to this external 8 channel active RS485 hub to provide a STAR wiring connection to the CommStar. Also can be used with the CS308’s internal 8 channel hubs for further expansion. RS485 Active Hub
The unit has 8 independent RS485 output channels each with their own driver. All outputs see input data simultaneously. Each input channel is equipped with automatic send data control to allow for half duplex transmission. Expansion: Up to 64 channels. Dual Inputs: RS232 or RS485 Half Duplex Input
Model 8AH232D has selectable input for either RS232 or RS485 input. Compatible with CommStar RS485, 9600 baud networks. STAR Wiring
Each channel is independent and allows for home run, or star wiring, to each channel without using the typical RS485 daisy chain wiring. This eliminates concerns about terminations. Since each line has its own driver, each line can be up to 4000 ft. NOTE: You can use daisy chain wiring within EACH channel of the HUB to connect up to 255 devices, IF you observe the RS485 network connection and termination requirements. The last device in the daisy chain on each channel requires 120 Ohm line termination. Network Device Power
Each output channel provides 12VDC output to power network devices. Each output has a resettable 200ma fuse. Caution: there is a maximum of 1000ma total for all channels. 12V power supply is included RESIDENTIAL CONTROL SYSTEMS RCS specializes in networking and temperature control systems. With the RCS CommStar controller create a flexible and powerful control system for your home. |
