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Connect Tech Xtreme/104-Express User Manual
Revision 0.00
11
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.