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WDT-02 Intelligent Watchdog Timer card without terminal board,cable,buzzer relay,LED,temperature sensor
Watchdog Timer:
Software programmable from 0.01 second to 167772.15 seconds.
Temperature Monitor:
Temperature:0°C-75°C;
Precision:+-1°C;onbord 2 digital LED display; Warming temperature Setting:50°C,60°C,70°C or none.
Computer Power Monitor:
PC Power +5V,External Power +12V
Transmit Message Includes:
watchdog timer state,Temperature status,Current Temperature scale, External & PC power status...etc.
Power Required:
1.External power:+12V,3W or 2.Internal power:+12V,3W
Printer-like I/O Interface:
LPT0(3bch),LPT1(378h),LPT(278h)or User Define, only need 3 I/O ports
Output Signals:
Signal/Function
WDT timeout
Over Temperature
Power failure
Reset
Yes
No
No
IRQ
Yes
Yes
No
I/O status
Yes
Yes
Yes
RELAY
Yes
Yes
No
TTL
Yes
Yes
No
LED
Yes
Yes
Yes
RS232
Yes
Yes
Yes
Buzzer
Yes
Yes
Yes
WDT <=> Watchdog
Power failure LED display only on terminal board.
IRQ:3,4,5,6,7,9,10,11,12,14,15
4 BIT TTL output:
logic high:2.4Vdc min,source 400uA.
logic low:0.5Vdc max,sink-10mA
Two Relay for watchdog or temperature failure
Contacts:FoRM c.
Max switched current:1A 30V/dc
Max switched voltage:120Vac/60Vdc
Max carry current:1.25AC/DC
Output Signals:
WDT-01
WDT-02
Software driver
Yes
Yes
on-board 7-seg LED
Yes
No
Temperature measurement
Yes
No
on board buzzer
Yes
No
Relay output for watchdog alarm
Yes
No
Relay output for temperature alarm
Yes
No
Terminal board
Yes
No
Other
Yes
Yes
Program Example:
WDT-01 is assigned to LPT2(278) I/O address. means Hexcode 0d
The content of Set.da files:t=4s
The content of End.da files:e
type Set.da>1pt2
(set the period of the watchdog timeout,and start counting)
type End.da>1pt2(stop watchdog counting)
Please note:If with DOS command
Copy con LPT2
the DOS will sendafter press ENTER key.
WDT-01 will not acceptcode.