ABB OMD800 Installation And Operating Instruction page 65

A U TO M AT I C C O N T R O L U N I T, O M D 8 0 0
Message
Manual To Auto
Auto To Manual
Manual To Test
Test To Manual
Remote Reset On
Remote Reset Off
Pre-transfer Signal On
Pre-transfer Signal Off
Priority I Signal On
Priority I Signal Off
Priority II Signal On
Priority II Signal Off
External Alarm Signal On
External Alarm Signal Off
Table 9.2 Events in OMD800
Some of the events include information about current operating mode or event source. Information is
presented with a capital letter in brackets after the event:
Letter Source
M Manual
A Auto
T Test
H Handle
F Fieldbus (Modbus)
I Digital Input
Table 9.3 Event operating mode and source information
Event/Alarm Log can be read through Modbus registers (see 7.2.3 OMD800 communication via
Modbus). Return value of the register can be interpreted as following:
Alarm/Event flag
Bit 15 (1 = Event)
Alarm/Event flag
Bit 15 (0 = Alarm)
Description
Operating mode changed from Manual to Auto
Operating mode changed from Auto to Manual
Operating mode changed from Manual to Test
Operating mode changed from Test to Manual
Remote reset signal activated
Remote reset signal inactivated
Pre-transfer signal activated
Pre-transfer signal inactivated
Priority I signal activated
Priority I signal inactivated
Priority II signal activated
Priority II signal inactivated
External alarm signal activated
External alarm signal inactivated
Description
Event initiated by user action in manual mode
Event initiated by automatic switching logic
Event initiated by user action in test mode
Event initiated while handle attached
Event initiated by fieldbus command
Event initiated by digital input
Event value
Bits 8-14 (see Table 9.2)
Event value
Bits 0-12 (see Table 9.1)
Event source
Bits 0-7 (See Table 9.3)
65
Value
48
49
50
51
52
53
54
55
56
57
58
59
60
61
Value
1
2
3
4
5
6