Chapter 1
Introduction
©
National Instruments Corporation
1-7
LEDs
Six LEDs on the accessory board report the PCI-7041 status. They are as
follows:
•
POWER (PWR)
—Lights when the board is powered on and has come
out of reset
•
Drive (HDD)
—Lights when the CompactFlash is accessed
•
Watchdog (WD)
—Lights when the watchdog timer has expired,
which indicates a problem has occurred with the software
•
CPU Temperature Monitor (TMP)
—Lights if the CPU temperature
exceeds its safe operating range and the board is in reset
•
USER 1 (1)
—Available for your own use
•
USER 2 (2)
—Available for your own use
Refer to the
LabVIEW RT User Manual
for more information about
programming these LEDs.
RTSI
The real-time system integration (RTSI) bus directly connects
measurement devices for precise synchronization of functions. The
PCI-7041 provides all RTSI functionality. The RTSI bus allows you to
connect the PCI-7041 to any other RTSI device regardless of whether the
other device is an RT Series device or standard DAQ device.
The RTSI connections are made with a connector on the top edge of the
PCI-7041 and a RTSI cable available from National Instruments. Refer to
your daughterboard user manual for information about how to use the RTSI
signals.
Serial Port
The PCI-7041 has one serial port, available on the accessory board. It is a
standard RS-232 serial port such as the one in your desktop computer. You
can read and write to the port from within LabVIEW RT using NI-VISA.
The NI-VISA resource name is ASRL1:INSTR. Refer to the
LabVIEW RT
User Manual
for more information.
