65
AUTOMATIC CONTROL UNIT, OMD800
AUTOMATIC CONTROL UNIT, OMD800
Message Description Value
Manual To Auto Operating mode changed from Manual to Auto 48
Auto To Manual Operating mode changed from Auto to Manual 49
Manual To Test Operating mode changed from Manual to Test 50
Test To Manual Operating mode changed from Test to Manual 51
Remote Reset On Remote reset signal activated 52
Remote Reset O Remote reset signal inactivated 53
Pre-transfer Signal On Pre-transfer signal activated 54
Pre-transfer Signal O Pre-transfer signal inactivated 55
Priority I Signal On Priority I signal activated 56
Priority I Signal O Priority I signal inactivated 57
Priority II Signal On Priority II signal activated 58
Priority II Signal O Priority II signal inactivated 59
External Alarm Signal On External alarm signal activated 60
External Alarm Signal O External alarm signal inactivated 61
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 Description Value
M Manual Event initiated by user action in manual mode 1
A Auto Event initiated by automatic switching logic 2
T Test Event initiated by user action in test mode 3
H Handle Event initiated while handle attached 4
F Fieldbus (Modbus) Event initiated by fieldbus command 5
I Digital Input Event initiated by digital input 6
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 Event value Event source
Bit 15 (1 = Event) Bits 8-14 (see Table 9.2) Bits 0-7 (See Table 9.3)
Alarm/Event flag Event value
Bit 15 (0 = Alarm) Bits 0-12 (see Table 9.1)
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