IV
ABB i-bus
®
EIB / KNX
Appendix
A.3
Truth table for the “Status byte – System” communication object
Bit
no.
7
6
5
4
3
2
1
0
8-bit value
Hexadecimal
Not assigned
Not assigned
Inter
nal err
or
Undervoltage
Status of channel D
Status of channel C
Status of channel B
Status of channel A
0
00
0
0
0
0
0
0
0
0
1
01
0
0
0
0
0
0
0
1
2
02
0
0
0
0
0
0
1
0
3
03
0
0
0
0
0
0
1
1
4
04
0
0
0
0
0
1
0
0
5
05
0
0
0
0
0
1
0
1
6
06
0
0
0
0
0
1
1
0
7
07
0
0
0
0
0
1
1
1
8
08
0
0
0
0
1
0
0
0
9
09
0
0
0
0
1
0
0
1
10
0A
0
0
0
0
1
0
1
0
11
0B
0
0
0
0
1
0
1
1
12
0C
0
0
0
0
1
1
0
0
13
0D
0
0
0
0
1
1
0
1
14
0E
0
0
0
0
1
1
1
0
15
0F
0
0
0
0
1
1
1
1
16
10
0
0
0
1
0
0
0
0
17
11
0
0
0
1
0
0
0
1
18
12
0
0
0
1
0
0
1
0
19
13
0
0
0
1
0
0
1
1
20
14
0
0
0
1
0
1
0
0
21
15
0
0
0
1
0
1
0
1
22
16
0
0
0
1
0
1
1
0
23
17
0
0
0
1
0
1
1
1
24
18
0
0
0
1
1
0
0
0
25
19
0
0
0
1
1
0
0
1
26
1A
0
0
0
1
1
0
1
0
27
1B
0
0
0
1
1
0
1
1
28
1C
0
0
0
1
1
1
0
0
29
1D
0
0
0
1
1
1
0
1
30
1E
0
0
0
1
1
1
1
0
31
1F
0
0
0
1
1
1
1
1
32
20
0
0
1
0
0
0
0
0
33
21
0
0
1
0
0
0
0
1
34
22
0
0
1
0
0
0
1
0
35
23
0
0
1
0
0
0
1
1
36
24
0
0
1
0
0
1
0
0
37
25
0
0
1
0
0
1
0
1
38
26
0
0
1
0
0
1
1
0
39
27
0
0
1
0
0
1
1
1
40
28
0
0
1
0
1
0
0
0
41
29
0
0
1
0
1
0
0
1
42
2A
0
0
1
0
1
0
1
0
43
2B
0
0
1
0
1
0
1
1
44
2C
0
0
1
0
1
1
0
0
45
2D
0
0
1
0
1
1
0
1
46
2E
0
0
1
0
1
1
1
0
47
2F
0
0
1
0
1
1
1
1
48
30
0
0
1
1
0
0
0
0
49
31
0
0
1
1
0
0
0
1
50
32
0
0
1
1
0
0
1
0
51
33
0
0
1
1
0
0
1
1
52
34
0
0
1
1
0
1
0
0
53
35
0
0
1
1
0
1
0
1
54
36
0
0
1
1
0
1
1
0
55
37
0
0
1
1
0
1
1
1
56
38
0
0
1
1
1
0
0
0
57
39
0
0
1
1
1
0
0
1
58
3A
0
0
1
1
1
0
1
0
59
3B
0
0
1
1
1
0
1
1
60
3C
0
0
1
1
1
1
0
0
61
3D
0
0
1
1
1
1
0
1
62
3E
0
0
1
1
1
1
1
0
63
3F
0
0
1
1
1
1
1
1
64
40
0
1
0
0
0
0
0
0
65
41
0
1
0
0
0
0
0
1
66
42
0
1
0
0
0
0
1
0
67
43
0
1
0
0
0
0
1
1
68
44
0
1
0
0
0
1
0
0
69
45
0
1
0
0
0
1
0
1
70
46
0
1
0
0
0
1
1
0
71
47
0
1
0
0
0
1
1
1
72
48
0
1
0
0
1
0
0
0
73
49
0
1
0
0
1
0
0
1
74
4A
0
1
0
0
1
0
1
0
75
4B
0
1
0
0
1
0
1
1
76
4C
0
1
0
0
1
1
0
0
77
4D
0
1
0
0
1
1
0
1
78
4E
0
1
0
0
1
1
1
0
79
4F
0
1
0
0
1
1
1
1
80
50
0
1
0
1
0
0
0
0
81
51
0
1
0
1
0
0
0
1
82
52
0
1
0
1
0
0
1
0
83
53
0
1
0
1
0
0
1
1
84
54
0
1
0
1
0
1
0
0
85
55
0
1
0
1
0
1
0
1
86
56
0
1
0
1
0
1
1
0
87
57
0
1
0
1
0
1
1
1
88
58
0
1
0
1
1
0
0
0
89
59
0
1
0
1
1
0
0
1
90
5A
0
1
0
1
1
0
1
0
91
5B
0
1
0
1
1
0
1
1
92
5C
0
1
0
1
1
1
0
0
93
5D
0
1
0
1
1
1
0
1
94
5E
0
1
0
1
1
1
1
0
95
5F
0
1
0
1
1
1
1
1
96
60
0
1
1
0
0
0
0
0
97
61
0
1
1
0
0
0
0
1
98
62
0
1
1
0
0
0
1
0
99
63
0
1
1
0
0
0
1
1
100
64
0
1
1
0
0
1
0
0
101
65
0
1
1
0
0
1
0
1
102
66
0
1
1
0
0
1
1
0
103
67
0
1
1
0
0
1
1
1
104
68
0
1
1
0
1
0
0
0
105
69
0
1
1
0
1
0
0
1
106
6A
0
1
1
0
1
0
1
0
107
6B
0
1
1
0
1
0
1
1
108
6C
0
1
1
0
1
1
0
0
109
6D
0
1
1
0
1
1
0
1
110
6E
0
1
1
0
1
1
1
0
111
6F
0
1
1
0
1
1
1
1
112
70
0
1
1
1
0
0
0
0
113
71
0
1
1
1
0
0
0
1
114
72
0
1
1
1
0
0
1
0
115
73
0
1
1
1
0
0
1
1
116
74
0
1
1
1
0
1
0
0
117
75
0
1
1
1
0
1
0
1
118
76
0
1
1
1
0
1
1
0
119
77
0
1
1
1
0
1
1
1
120
78
0
1
1
1
1
0
0
0
121
79
0
1
1
1
1
0
0
1
122
7A
0
1
1
1
1
0
1
0
123
7B
0
1
1
1
1
0
1
1
124
7C
0
1
1
1
1
1
0
0
125
7D
0
1
1
1
1
1
0
1
126
7E
0
1
1
1
1
1
1
0
127
7F
0
1
1
1
1
1
1
1
128
80
1
0
0
0
0
0
0
0
129
81
1
0
0
0
0
0
0
1
130
82
1
0
0
0
0
0
1
0
131
83
1
0
0
0
0
0
1
1
132
84
1
0
0
0
0
1
0
0
133
85
1
0
0
0
0
1
0
1
134
86
1
0
0
0
0
1
1
0
135
87
1
0
0
0
0
1
1
1
136
88
1
0
0
0
1
0
0
0
137
89
1
0
0
0
1
0
0
1
138
8A
1
0
0
0
1
0
1
0
139
8B
1
0
0
0
1
0
1
1
140
8C
1
0
0
0
1
1
0
0
141
8D
1
0
0
0
1
1
0
1
142
8E
1
0
0
0
1
1
1
0
143
8F
1
0
0
0
1
1
1
1
144
90
1
0
0
1
0
0
0
0
145
91
1
0
0
1
0
0
0
1
146
92
1
0
0
1
0
0
1
0
147
93
1
0
0
1
0
0
1
1
148
94
1
0
0
1
0
1
0
0
149
95
1
0
0
1
0
1
0
1
150
96
1
0
0
1
0
1
1
0
151
97
1
0
0
1
0
1
1
1
152
98
1
0
0
1
1
0
0
0
153
99
1
0
0
1
1
0
0
1
154
9A
1
0
0
1
1
0
1
0
155
9B
1
0
0
1
1
0
1
1
156
9C
1
0
0
1
1
1
0
0
157
9D
1
0
0
1
1
1
0
1
158
9E
1
0
0
1
1
1
1
0
159
9F
1
0
0
1
1
1
1
1
160
A0
1
0
1
0
0
0
0
0
161
A1
1
0
1
0
0
0
0
1
162
A2
1
0
1
0
0
0
1
0
163
A3
1
0
1
0
0
0
1
1
164
A4
1
0
1
0
0
1
0
0
165
A5
1
0
1
0
0
1
0
1
166
A6
1
0
1
0
0
1
1
0
167
A7
1
0
1
0
0
1
1
1
168
A8
1
0
1
0
1
0
0
0
169
A9
1
0
1
0
1
0
0
1
170
AA
1
0
1
0
1
0
1
0
171
AB
1
0
1
0
1
0
1
1
172
AC
1
0
1
0
1
1
0
0
173
AD
1
0
1
0
1
1
0
1
174
AE
1
0
1
0
1
1
1
0
175
AF
1
0
1
0
1
1
1
1
176
B0
1
0
1
1
0
0
0
0
177
B1
1
0
1
1
0
0
0
1
178
B2
1
0
1
1
0
0
1
0
179
B3
1
0
1
1
0
0
1
1
180
B4
1
0
1
1
0
1
0
0
181
B5
1
0
1
1
0
1
0
1
182
B6
1
0
1
1
0
1
1
0
183
B7
1
0
1
1
0
1
1
1
184
B8
1
0
1
1
1
0
0
0
185
B9
1
0
1
1
1
0
0
1
186
BA
1
0
1
1
1
0
1
0
187
BB
1
0
1
1
1
0
1
1
188
BC
1
0
1
1
1
1
0
0
189
BD
1
0
1
1
1
1
0
1
190
BE
1
0
1
1
1
1
1
0
191
BF
1
0
1
1
1
1
1
1
192
C0
1
1
0
0
0
0
0
0
193
C1
1
1
0
0
0
0
0
1
194
C2
1
1
0
0
0
0
1
0
195
C3
1
1
0
0
0
0
1
1
196
C4
1
1
0
0
0
1
0
0
197
C5
1
1
0
0
0
1
0
1
198
C6
1
1
0
0
0
1
1
0
199
C7
1
1
0
0
0
1
1
1
200
C8
1
1
0
0
1
0
0
0
201
C9
1
1
0
0
1
0
0
1
202
CA
1
1
0
0
1
0
1
0
203
CB
1
1
0
0
1
0
1
1
204
CC
1
1
0
0
1
1
0
0
205
CD
1
1
0
0
1
1
0
1
206
CE
1
1
0
0
1
1
1
0
207
CF
1
1
0
0
1
1
1
1
208
D0
1
1
0
1
0
0
0
0
209
D1
1
1
0
1
0
0
0
1
210
D2
1
1
0
1
0
0
1
0
211
D3
1
1
0
1
0
0
1
1
212
D4
1
1
0
1
0
1
0
0
213
D5
1
1
0
1
0
1
0
1
214
D6
1
1
0
1
0
1
1
0
215
D7
1
1
0
1
0
1
1
1
216
D8
1
1
0
1
1
0
0
0
217
D9
1
1
0
1
1
0
0
1
218
DA
1
1
0
1
1
0
1
0
219
DB
1
1
0
1
1
0
1
1
220
DC
1
1
0
1
1
1
0
0
221
DD
1
1
0
1
1
1
0
1
222
DE
1
1
0
1
1
1
1
0
223
DF
1
1
0
1
1
1
1
1
224
E0
1
1
1
0
0
0
0
0
225
E1
1
1
1
0
0
0
0
1
226
E2
1
1
1
0
0
0
1
0
227
E3
1
1
1
0
0
0
1
1
228
E4
1
1
1
0
0
1
0
0
229
E5
1
1
1
0
0
1
0
1
230
E6
1
1
1
0
0
1
1
0
231
E7
1
1
1
0
0
1
1
1
232
E8
1
1
1
0
1
0
0
0
233
E9
1
1
1
0
1
0
0
1
234
EA
1
1
1
0
1
0
1
0
235
EB
1
1
1
0
1
0
1
1
236
EC
1
1
1
0
1
1
0
0
237
ED
1
1
1
0
1
1
0
1
238
EE
1
1
1
0
1
1
1
0
239
EF
1
1
1
0
1
1
1
1
240
F0
1
1
1
1
0
0
0
0
241
F1
1
1
1
1
0
0
0
1
242
F2
1
1
1
1
0
0
1
0
243
F3
1
1
1
1
0
0
1
1
244
F4
1
1
1
1
0
1
0
0
245
F5
1
1
1
1
0
1
0
1
246
F6
1
1
1
1
0
1
1
0
247
F7
1
1
1
1
0
1
1
1
248
F8
1
1
1
1
1
0
0
0
249
F9
1
1
1
1
1
0
0
1
250
FA
1
1
1
1
1
0
1
0
251
FB
1
1
1
1
1
0
1
1
252
FC
1
1
1
1
1
1
0
0
253
FD
1
1
1
1
1
1
0
1
254
FE
1
1
1
1
1
1
1
0
255
FF
1
1
1
1
1
1
1
1