Connect Tech Xtreme/104-Express User Manual
Half Duplex and Multi-drop modes require you to select the appropriate mode via software, appropriate wiring and the proper jumper block settings. Please refer to the wiring recommendations (Figure 4) and the readme.txt files found in the appropriate directories on the CD.
Tri-state Operation
Xtreme/104-Express models offer a power-on tri-state option to ensure glitch-free network operation while the system is powering up. If enabled, the Xtreme/104-Express will tri-state the transmitter until the driver opens the port. This operation is configurable for any port configured as RS-485, regardless of the RS-485 mode selected.
Jumper J1 controls the power-on tri-state functionality. Install a jumper on the first location of the J1 in order to tri-state Port 1 at power-on. Install a jumper on the second position for Port 2, etc. The ports will not come out of tri-state until the operating system driver begins transmitting on the associated port.
Installing a jumper on J1 will have no effect on ports configured in RS-232 mode.