7BChapter Four: Operation 75BS-Analog Sensor Object
69
Note
Hysteresis can only be set using DeviceNet digital communications commands.
Warning Settling Time
Attribute ID # 24 determines the time in milliseconds that the Value must exceed the Trip Point
before the exception condition is generated. The default is 0.
Averaging Time
Attribute ID # 31 specifies the tim
e in ms
over which analog samples are averaged. Averaging
Time less than the 10 ms disables averaging. The maximum allowed time in milliseconds is 2500
ms. The default value is 30 ms.
Overrange
Attribute ID # 32 specifies the highest valid Value (110%
of Full Scale). When Value > 110%
Full Scale, the Reading Valid attribute is set to invalid. The default is 110%
Full Scale.
Underrange
Attribute ID # 33 specifies the lowest valid Value (-5% of Full Scale). When Value < -5% Full
Scale, the Reading Value Attribute is set to invalid. The default is -5% Full Scale.
Sensor Warning
Attribute ID # 94 indicates the bits definition of Sensor Warnings. By
tes 0 and 1 ma
p,
respectively, to Bytes 1 and 2 of the S-Device Supervisor Object Device Exception Detail
Warning (Attribute 0x0E). Refer to Table 42, page 72.
Sensor Alarm
Attribute ID # 95 indicates the bits definition of Sensor Alarm
s. By
tes 0 and 1 map, respectively,
to Bytes 1 and 2 of the S-Device Supervisor Object Device Exception Detail Alarm (Attribute
0x0D). Refer to Table 42, page 72.
Status Extension
Attribute ID # 96 indicates the bits definition of Sensor Warnings. By
te 0 ma
ps to Byte 0 of the
S-Device Supervisor Object Device Exception Detail Warning (Attribute 0x0E). Refer to Table
42, page 72.
Sub Class
Attribute ID # 99 contains Vacuum
gauge sub class number 3 (Capacitance Manom
eter).
Pressure as Fractional Percentage of Full Scale
Attribute ID # 119 indicates the corrected and calibrated final value of pressure as a fractional
percentage of Full Scale, where a 100%
of Full Scale value is indicated as 1.00
Pressure Units Support
Table 38: S-Analog Sensor Pressure Units Support
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