Owner's manual

FOUNDATION
TM
Fieldbus Blocks Manual
10-2
Figure 10-1. Signal Characterizer
Function Block Schematic Diagram
TABLE 10-1. Signal Characterizer Function Block System Parameters
Index
Number
Parameter
Description
1 ST_REV The revision level of the static data associated with the function
block. The revision value will be incremented in each time a static
parameter value in the block is changed.
2 TAF_DESC The use description of the intended application of the block.
3 STRATEGY The strategy field can be used to identify grouping of blocks. This
data is not checked or processed by the block.
4 ALERT_KEY The identification number of the plant unit. This information may
be used in the host for sorting alarms, etc.
5 MODE_BLK The actual, target, permitted, ad normal modes of the block.
Target: The mode to “go to”
Actual: The mode the “block is currently in”
Permitted: Allowed modes that target may take on
Normal: Most common mode for target
6 BLOCK_ER
R
This parameter reflects the error status associated with the
hardware or software components associated with a block. It is a
bit string so that multiple errors may be shown.
7 OUT1 The block output value and status.
8 OUT2 The block output value and status.
9 X_SCALE The display scaling of the variable corresponding to the x-axis for
display. It has no effect on the block.
10 Y_SCALE The display scaling of the variable corresponding to the y-axis for
display. It has no effect on the block.
11 GRANT_DE
NY
Options for controlling access of host computers and local control
panels to operating, tuning, and alarm parameters of the block.
(Not used by the device)
12 IN1 The block input value and status.
13 IN2 The block input value and status.
14 SWAP_2 Changes the algorithm in such a way that IN_2 corresponds to “y”
andOUT_2to“x”.
15 CURVE_X Curve input points. The “x” points of the curve are defined by an
array of 21 points.
16 CURVE_Y Curve input points. The “y” points of the curve are defined by an
array of 21 points.
17 UPDATE_EV
T
This alert is generated by any changes to the static data.
18 BLOCK
_ALM
The block alarm is used for all configuration, hardware,
connection failure, or system problems in the block. The cause of
the alert is entered in the subcode field. The first alert to become
active will set the active status in the status parameter. As soon
as the Unreported status is cleared by the alert reporting task
other block alerts may be reported without clearing the active
status, if the subcode has changed.
fieldbus-fbus_25a
IN_1
IN_2
OUT_1
OUT_2
False
True
SWAP_2
SWAP_2
False
True
X
Y
Y
X
Block Logic