Emerson FIELDVUE DVC6200f, Instruction Manual

Page: 171 / 326

AI Function Block
November 2010 159
Table 4-54. Channel Selections for the Analog Input Function Block
Channel Parameter
(1)
Block
Index
Number
XD_SCALE Units
2 TRAVEL_TARGET TB 49 % (1342)
3 FINAL_POSITION_VALUE TB 17 % (1342)
4 TRAVEL TB 34 % (1342)
5 SUPPLY_PRESS TB 35 psig (1143), bar (1137), kPa (1133), inHg (1155), inH20 (1146), kg/cm2 (1145)
6 PRESSURE_A TB 36 psig (1143), bar (1137), kPa (1133), inHg (1155), inH20 (1146), kg/cm2 (1145)
7 PRESSURE_B TB 37 psig (1143), bar (1137), kPa (1133), inHg (1155), inH20 (1146), kg/cm2 (1145)
8 PRESSURE_DIFF TB 38 psig (1143), bar (1137), kPa (1133), inHg (1155), inH20 (1146), kg/cm2 (1145)
9 DRIVE_SIGNAL TB 53 % (1342)
10 TRAVEL_DEVIATION TB 52 % (1342)
11 TEMPERATURE TB 48 C (1001), F (1002)
12 CYCLE_COUNT TB 73 no units (1588)
13 TRAVEL_ACCUMULATION TB 72 % (1342)
1. Refer to table 4-14 for transducer block parameter descriptions and table 4-25 for AO parameter descriptions.
Status Handling
The AI block only gets Good Non-Specified Unlimited
or Bad Device Failure for status from the transducer.
This is reflected in FIELD_VAL.STATUS [19.1].
PV.STATUS [7.1] is the same as
FIELD_VAL.STATUS [19.1]. OUT.STATUS [8.1] can
also reflect Bad, Out of Service in addition to
PV.STATUS [7.1] values.
In the STATUS_OPTS [14] parameter, you can select
from the following options to control the status
handling:
Propagate Fail Forward—If the status from the
sensor is Bad, Device failure or Bad, Sensor failure,
propogate it to OUT without generating an alarm. The
use of these sub-status in OUT is determined by this
option. Through this option, you may determine
whether alarming (sending out an alert) will be done by
the block or propagated downstream for alarming.
OUT (mode in man)
OUT (mode in auto)
PV
63% of Change
TIME (seconds)
FIELD_VAL
PV_FTIME
FIELDBUS-FBUS_03A
Figure 4-23. Analog Input Function Block Timing Diagram
4