Rockwell Automation Publication 1444-UM001D-EN-P - June 2018 519
CIP Objects Appendix A
Table 273 - Trend / Alarm Status
Bit 1 Network Fault includes the following:
• Device powered off or with no IP address configured.
• Network cable not detected.
• An exclusive owner connection has timed out
Bit 2 Network Address Fault indicates an IP addressing conflict (address in use by another device).
Both bits 1 and 2 contribute to an “E/IP Communications Fault” in the context of a machine fault relay.
Bit Description Bit Description
0 Set when the (low resolution)
Discrete Trend buffer is cycling.
16 Low Resolution Discrete Trend alarm buffer
status.
1 Set when the (high resolution)
Discrete Trend buffer is cycling.
17
2 Set when the FFT Trend buffer is
cycling.
18
3 Set when the TWF Trend buffer is
cycling.
19
4 spare 20 High Resolution Discrete Trend alarm buffer
status.
521
622
723
8 24 FFT Trend alarm buffer status.
925
10 26
11 27
12 28 Time waveform Trend alarm buffer status
13 29
14 30
15 31
Alarm Buffer Status Definition
0 Disabled Buffer is not being captured.
1 Armed Waiting for alarm event trigger.
2 Populating Alarm event in progress.
3 Data Ready Alarm data available.
4 Latched Alarm data available and latched until reset.
Bit Description Bit Description
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