PC104-PLUS1500
Functions of the board
33
This error information is available for the user through an interrupt routine. Please
find further information in the software description “Interrupt”, which is available
as a separate PDF file.
Fig. 8-3: Digital output level
8.5
Interrupt
The board
PC104-PLUS1500
has one interrupt line. You can select which
interrupt of the PCI bus is used by setting the turn switch (see
110H
Fig. 5-1).
Possible interrupt sources
:
-
Interruptible inputs (channel 2 and 3)
-
Timer1/watchdog run down
-
Timer2 run down
-
Counter overflow
-
Watchdog run down, outputs are reset
-
Voltage error (external voltage supply is not available)
-
Short-circuit error, overtemperature error
The interrupt source information is available for the user program through an
interrupt routine. Please find further information in the software description
„Interrupt“, which is available as a separate PDF file.
Interruptible inputs: IRQ logic
It is possible to mask an
OR
event (Event) at rising/falling edge.
For the control of the IRW logic the following functions are available (set by
software):
-
enable/disable of the interrupt function
-
interrupt source rereadable
-
IRQ status register rereadable
-
the interrupt function is programmed through two registers, with which the
events are masked (Hex):
Mode_1 reacts on rising edges or high levels
Mode_2 reacts on falling edges or low levels
