CTI Products RCD Standard - Remote Comparator Display User Manual
Page 101
MCN Remote Comparator Display
Appendix A
CTI Products, Inc.
Changing Status Message Text
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95
Creating 8 sub-categories
Table 11 shows how eight sub-categories can be created by reserving the FAIL,
DISABLE and RECEIVE input status signals (binary weight 40 hex, 20 hex and
10 hex) for the selector. Two status messages can be defined for each sub-
category, with the VOTE input status signal selecting between the messages.
Input
Value
Field
Sub-
category
Sub-category Selector I/O
Bits
FAIL DISABLE RECEIVE
Active
Status
Signals
00
0
0 0 0
-
01
0
0 0 0
VOTE
04
1
0 0 1
-
05
1
0 0 1
VOTE
10
2
0 1 0
-
11
2
0 1 0
VOTE
14
3
0 1 1
-
15
3
0 1 1
VOTE
40
4
1 0 0
-
41
4
1 0 0
VOTE
44
5
1 0 1
-
45
5
1 0 1
VOTE
50
6
1 1 0
-
51
6
1 1 0
VOTE
54
7
1 1 1
-
55
7
1 1 1
VOTE
Table 11 - 8 Sub-categories / 2 States Each
Note: In Table 11, any bit or input status signal shown as a 1 is an active input
signal and any bit shown as a 0 is an inactive input signal. For the MCN system,
all I/O signals are active low, so any active input status signal is low at the CIB or
IOB I/O connector and any inactive input status signal is high at the CIB or IOB
I/O connector.