Kontron PCI-COM-8ULP, User Manual

Page: 24 / 38

page 24 PCI-COM-8ULP User’s Guide
The card has 8 separate channels which can be individually configured. Each channel
can be used in:
1) RS485 (2 wire mode) - This mode may use “Auto RTS”
2) RS422
3) RS232
4) RS485 (4 wire mode)
The jumpers on the card must be properly placed in order to have the card function
properly.
In order to select the basic mode for a channel, the M1 and M2 jumpers be properly
placed. (These jumpers are located at the end of the card away from the cable
connector).
Mode M1 M2
RS485 (2 Wire Mode) IN OUT
RS485 (4 Wire Mode) OUT IN
RS422 IN IN
RS232 OUT OUT
Other jumpers:
1) RS 485 (2 wire mode) - Two jumpers must be installed for each channel in this mode
in order to connect the output and input lines. These jumpers are located near the cable
connector and are labeled with the channel letter and “485.”
2) RS 485 (2 wire mode) using “Auto RTS” - One jumper must be installed for each
channel in this mode. This jumper is located at the end of the card away from the cable
connector, adjacent to the “M” jumpers and are labeled with the channel letter and “A8".
3) RS 485 or RS 422 Loads - One jumper must be installed for each channel which
requires a load. This jumper is located at the cable connector end of the card and is
labeled with the channel letter and “LD.”
Notes:
1) Any unneeded jumpers that are installed can cause the card to function incorrectly.
2) If the “Auto RTS” jumpers are changed, the card should be rebooted or reset. This is
required because the status of the jumpers is read when the card is reset and is used to
program the Auto RTS function into the appropriate channel(s) of the UART. If the state
of this jumper is changed, the UART will not be properly programmed until the jumper
has been reread. To do this, the card must be reset.