Nexcom NISE 50C-H User Manual page 72

Appendix B: Watchdog
Sample explanation:
To set up watchdog time interval to 4 sec, here is the vale should fill in in
each address.
4sec = 400 ms (decimal) = 190 (hexadecimal)
Address 0x50 0x51
Data
0x00 0x00
Complete command set sequence:
Further description Command
>o 0x66 0x89
Set watch dog
>o 0x66 0x89
interval, write to
address 0x50~0x53
>o 0x66 0x89
and Data"00000190"
>o 0x66 0x89
Reset Watchdog time interval description:
This command is used to reset watchdog time.
Sequence to read light sensor:
Step Action Description
0 Wait IBF clear
Send reset watchdog
1 Write 0x2A to 0x66
command
2 Wait OBF set
If setup successfully,
3 Read 0x62 port
EC will return 0x03.
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0x52 0x53
0x01 0x90
Address Data
>o 0x62 0x50 >o 0x00
>o 0x62 0x51 >o 0x00
>o 0x62 0x52 >o 0x01
>o 0x62 0x53 >o 0x90
11 12
RW sample code
command
x
>o 0x66 0x2A
x
x (check 0x03
output on display)
Start Watchdog description:
Step Action
0 Wait IBF clear
1 Write 0x28 to 0x66
2 Wait IBF clear
3 Write 0x01 to 0x62
4 Wait OBF set
5 Read 0x62 port
Stop Watchdog description:
Step Action
0 Wait IBF clear
1 Write 0x29 to 0x66
2 Wait OBF set
3 Read 0x62 port
58
RW sample code
Description
command
x
Send start watchdog
>o 0x66 0x28
command
x
>o 0x62 0x01
(check 0x03 output
on display)
x
x
If setup successfully,
(check 0x01 output
EC will return 0x01.
on display)
RW sample code
Description
command
x
Send stop watchdog
>o 0x66 0x29
command
x
x
If setup successfully,
(check 0x02 output
EC will return 0x02.
on display)
NISE 50C/50C-H User Manual