Diagnostics
81
9.3
DP Master Slave Status Table
The area in the M1 file from 4000 to 4007 contains the status of the slaves,
one bit per slave. For example, if the slave at station address 1 is good, bit 1
of register 4000 is set.
In addition, if the status of all slaves is good, bit 0 of register 4013 is set. If
this bit is 0, one or more slaves have bad status.
This table can be used in conjunction with the global fault enable, bit 0 of
register 4010 in the M0 file, and the ignore slave fault table, 4000-4007 in the
M0 file, to fault the SLC if slaves are in error.
If the global fault enable bit is 0, the scanner will not fault the SLC when
there are slave errors. This is the default.
If the global fault enable bit is 1, the scanner will fault the SLC when there
are slave errors. However you can use the ignore slave fault table to tell the
scanner to ignore the status of some slaves.
The ignore slave fault table is organized exactly like the slave status table
above. Set the bit that corresponds to a slave if you want the scanner to ignore
the status of that slave. If the bit for a slave is set, the slave status is shown in
the slave status table but it is not included in the all slaves good flag, bit 0 of
register 4013.
Wait an appropriate time before you turn on the global fault enable bit. It
takes some time for DP slaves to start up. The amount of time depends on the
baud rate and the startup time for the slaves on the network.
bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
4000
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
4001
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
4002
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
4003
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
4004
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
4005
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
4006
111 110 109 108 107 106 105 104 103 102 101 100
99
98
97
96
4007
126 125 124 123 122 121 120 119 118 117 116 115 114 113 112
Summary of Contents for SST-PFB-SLC
Page 7: ...Contents vii Technical Data 105 Index 107 A...
Page 8: ...SST PFB SLC User s Guide viii...
Page 14: ...SST PFB SLC User s Guide 6...
Page 20: ...SST PFB SLC User s Guide 12...
Page 34: ...SST PFB SLC User s Guide 26...
Page 53: ...45 6 DP Master Application Examples...
Page 56: ...SST PFB SLC User s Guide 48 Sample Program...
Page 57: ...DP Master Application Examples 49 Sample continued...
Page 66: ...Using the Scanner Module as a DP Slave 58...
Page 67: ...59 8 Using FDL...
Page 75: ...Using FDL 67 Sample Program...
Page 76: ...SST PFB SLC User s Guide 68 Sample Continued...
Page 80: ...SST PFB SLC User s Guide 72 Sample Program...
Page 81: ...SST PFB SLC User s Guide 73 Sample Continued...
Page 85: ...SST PFB SLC User s Guide 77...
Page 86: ...SST PFB SLC User s Guide 78...
Page 87: ...79 9 Diagnostics This chapter describes system diagnostics...
Page 105: ...97 11 Network Parameter Defaults This chapter describes network defaults...
