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.