Appendix B
Page 171
Modbus Event Data Mapping ( Time Stamp)
Event data may be read in blocks of 10 events at a time. These appear in a block of 60 registers (6
per event). Once ten events are read then the registers are reloaded with any subsequent ones from
the event buffer until all events are retrieved. If no event has occurred, then all sixty registers are filled
with FF HEX.
The event data format is as shown below:
16-bit
Word
MSB
(bit positions 8 - 15)
LSB
(bit positions 0 - 7)
1
Year
Month
2
Day
Hour
3
Minute
Second
4
Millisecond
5
Input Point Number
6
IRIG-B Status
[0 = off, 1 = on]
Input Status
[0= Alarm, 1=Normal]
An example of the register format for 10 events is shown below.
Modbus
Address
Event
#
Modbus Data
MSB (bit positions 8 - 15)
LSB (bit positions 0 - 7)
41001
1
Year [0-99]
Month [1-12]
41002
Day [1-31]
Hour [1-24]
41003
Minute [1-60]
Second [1-60]
41004
Millisecond [0-999]
41005
Input Point Number [1-1200]
41006
IRIG-B Status [0 = off, 1 = on]
Input Status [0= Alarm, 1=Normal]
41007
2
Year [0-99]
Month [1-12]
41008
Day [1-31]
Hour [1-24]
41009
Minute [1-60]
Second [1-60]
41010
Millisecond [0-999]
41011
Input Point Number [1-1200]
41012
IRIG-B Status [0 = off, 1 = on]
Input Status [0= Alarm, 1=Normal]
41055
10
Year [0-99]
Month [1-12]
41056
Day [1-31]
Hour [1-24]
41057
Minute [1-60]
Second [1-60]
41058
Millisecond [0-999]
41059
Input Point Number [1-1200]
41060
IRIG-B Status [0 = off, 1 = on]
Input Status [0= Alarm, 1=Normal]
Summary of Contents for DMS-3K
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Page 120: ...108 3U Logic Box Motherboard Schematic Front View...
Page 121: ...Page 109 of 206 6U Logic Box Motherboard Schematic Front View...
Page 136: ...124 I O Modules Typical Alarm Circuit Arrangement...
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