-102- MBM-530NS User’s Manual
7. SUPPORT FACILITATION
This chapter gives the details of how to use the pre-programmed Watchdog
Timer to monitor the industrial Automation system and provides the
information on the included software.
WDT Time Table
GPIO
Step
1
2
3
Time Period
(sec)
0
0
0
0
2
1
0
0
1
4
2
0
1
0
8
3
0
1
1
16
4
1
0
0
20
5
1
0
1
24
6
1
1
0
28
7
1
1
1
32
WDT I/O Port
443H
I/O Write
The enable cycle
443H
I/O Write
The refresh cycle
441H
I/O Write
The disable cycle
Sample Program
#include <stdio.h>
#include <stdlib.h>
#include <dos.h>
#define Count01 0x01
//GPIO10
#define Count02 0x02
//GPIO11
#define Count03 0x04
//GPIO12
#define WDT_EN_IO 0x443
//IO for Enable WDT
#define WDT_DIS_IO0x441
//IO for Disable WDT
unsigned Index_Reg = 0x002E, Data_Reg = 0x002F;
unsigned char Dev_Index = 0x07, GPIO_Num = 0x07, PM_Num = 0x08;
Summary of Contents for MBM-530NS
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