User manual

Connect Tech Xtreme/104 Plus, PCI-104 and PCI/104 Express Family User Manual
Revision 0.08
19
JA = Port 1, JB = Port 3, JC = Port 5, JD = Port 7
JE = Port 2, JF = Port 4, JG = Port 6, JH = Port 8.
Note: this does not apply to Xtreme/104 Express models
Half Duplex and Multi-drop Slave modes require you to select the appropriate
mode via software. Please refer to the readme.txt files found in the appropriate
directories on the Xtreme/104-Plus/Express CD.
Power-on Tri-state (Xtreme/104-Plus Opto and Xtreme/104 Express Opto models only):
Xtreme/104- Opto models offer a power-on tri-state feature to ensure glitch-free power-up on
multi-drop networks. When enabled, the Xtreme/104- Opto will hold the RS-485 transmitter in
tri-state at power up. This feature is available on ports configured as RS-485 half duplex or RS-
485 4-wire multi-drop.
Note: Enabling this feature on ports configured in RS-232 or RS-422 (RS-485 full duplex)
modes will alter the operation of the RTS signal.
Jumper J1 (Xtreme/104 Plus) and J19 (Xtreme/104 Express) control the power-on tri-state
functionality. Install a jumper on the first location of J1 or J19, and configure Port 1 in RS-485
half duplex or multi-drop slave in order to tri-state Port 1 at power-on; install a jumper on the
second position of J1 to control Port 2, etc. Ports will not come out of tri-state until the driver
has loaded and transmission begins on the associated port.
Though J1 is a five position jumper, only the first four have connections to the ports on the card.
The fifth has no function.