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參數(shù)資料
| 型號： | PCSYSCON |
| 英文描述： | PC(ISA)BUS I/O CARD |
| 中文描述： | 電腦（ISA）總線的I / O卡 |
| 文件頁數(shù)： | 12/36頁 |
| 文件大小： | 383K |
| 代理商： | PCSYSCON |
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Mask Registers
There are three mask registers INTM, RELM and BUZM each with
the same bit meanings, as follows.
INTM is at pointer value 5 and controls interrupt generation. The
actual interrupt to be generated is set by LK1.
RELM is at pointer value 6 and controls relay operation. LK2 controls
whether the relay is normally on or off.
BUZM is at pointer value 7 and controls the operation of the buzzer.
Each mask register is independent, so that, for example, the buzzer
can be made to sound if the set temperature is exceeded while the
relay operates if there is a watchdog timeout.
Mask registers can be read and written, so your software can check
that the desired masks have been set up.
STATUS register
The STATUS register is at pointer value 8 (read). It contains
information about what is happening to the board. The bit patterns
are similar to those in the mask registers. In general a high bit
indicates a problem.
2192-09065-000-000
Section 2. The PCSYSCON I/O Map
Page 12
J278 PCSYSCON
Bit
7
6
5
4
PFAIL
OPT2
OPT1
WATCH
OTEMP
power-fail
option 2
option 1
Watchdog
Temperature
Not used
Not used
Not used
Alarm if one or more of the three power lines is
below the DAC voltage.
Alarm if option 2 input is triggered
Alarm if option 1 input is triggered
Alarm if watchdog timeout
Alarm if temperature exceeded
3
2
1
0
Name
Function
Comments
Bit
7
6
5
4
3
2
1
0
WDIS
-12L
+12L
+5L
OPT2
OPT1
WATCH
OTEMP
Watchdog
-12V problem
+12V problem
+5V problem
Option 2
Option 1
Watchdog
Temperature
High if the watchdog has never been started
High if -12V line low
High if +12V line low
High if +5V line low
High if option 2 input triggered
High if option 1 input triggered
High if watchdog timeout
High if temperature exceeded
Name
Function
Comments
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