Allen-Bradley 1444-TSCX02-02RB User Manual page 525

Table 280 - Alarm Status 0-12 (1 for each of the 13 Alarm Status outputs)
Bit Description
0 Set when any associated relay outputs &
light-emitting diode are set to the alarm
state.
1 Set if the alarm is disabled.
2 Set if the alarm is configured as latching.
3 Set when the conditions for the "alarm
state" are true.
4 Set when the alarm is bypassed (associated
relay outputs/LED held in non-alarm state).
5 Set when the alarm thresholds are being
applied in trip multiply mode.
6 Not used.
7 Set to indicate First Out alarm (Reevaluated
after Alarm Reset or Bypass).
8 Spare
9
10 Which voted alarm instance this Alarm
Status refers to. Use the nibble to indicate
11
the instance number, range 1-13. Special
relay sources (126/127) report "instances"
12
14/15 respectively (and no/zero output
type).
13
14 Whether the alarm status is the Alert (1),
Danger (2) or Transducer Fault (2) output.
15
Notes
The first byte (8 bits) provides the status of the Alarm Status instance.
The Alarm Status Word (the 2nd 16 bits) gives in depth information on the various conditions to the
alarm and its current state. Use requires some knowledge to use but is helpful in understanding why an
alarm hasn't happened, how close to an alarm it is (number of XooY matched). Similarly it can provide
information on actually what caused an alarm (sometimes difficult to ascertain in a complex voted
alarm).
For the alarm status word (bits 16-23 and 24-25):
• For measurement bit: 1 means over threshold or outside window, 0 means under threshold or inside
window.
• For Transducer OK state bit: 1 means fault, 0 means okay.
Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
CIP Objects
Bit Description
16 Indicates the current state of measurement
input 0.
17 Indicates the current state of the transducer
associated with measurement input 0.
18 Indicates the current state of measurement
input 1.
19 Indicates the current state of the transducer
associated with measurement input 1.
20 Indicates the current state of measurement
input 2.
21 Indicates the current state of the transducer
associated with measurement input 2.
22 Indicates the current state of measurement
input 3.
23 Indicates the current state of the transducer
associated with measurement input 3.
24 Indicates the current state of the speed
gating measurement.
25 Indicates the speed used for the speed
gating measurement is in fault.
26 Indicates the state of the 1st, 2nd and 3rd
gating logic inputs. Where multiple logic
27
gating inputs are configured they are
applied with AND logic.
28
29 Indicates the state of the configured Logic
Control (1 indicates control is active, alarm is
being triggered).
30 Used for module fault or when in bypass
indicating mode (bit set to 1 indicates fault/
bypass is active/on).
31 Spare
Appendix A
525