Westlock ICOT 5400, Technical Manual

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5/12/2017 TECH-538/D.W.O. 23160 Page 160 of 189
Complete List of the PID Block Parameters
Table 36:
Complete list of PID block parameters
Index Parameter
mnemonic
Description / EDD Help Valid Range Default FCT Default Deep
Default
Units Write R/W
1 ST_REV The revision level of the static data associated with the
function block. The revision value will be incremented each
time a static parameter value in the block is changed.
Read only
2 TAG_DESC The user description of the intended application of the block. R/W
3 STRATEGY The strategy field can be used to identify grouping of blocks.
This data is not checked or processed by the block.
R/W
4 ALERT_KEY The identification number of the plant unit. This information
may be used in the host for sorting alarms, etc.
1 to 255 None R/W
5 MODE_BLK The actual, target, permitted, and normal modes of the block. See MODE O/S O/S O/S NA R/W
6 BLOCK_ERR 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.
E Read only
7 PV Either the primary analog value for use in executing the
function, or a process value associated with it. May also be
calculated from the READBACK value of an AO block.
PV Read only
8 SP The analog setpoint of this block. PV/- 10% PV
9 OUT The primary analog value calculated as a result of executing
the function block.
OUT/- 10%
10 PV_SCALE The high and low scale values, engineering units code, and
number of digits to the right of the decimal point to be used in
displaying the PV parameter and parameters which have the
same scaling as PV.
0-100% PV
11 OUT_SCALE The high and low scale values, engineering units code, and
number of digits to the right of the decimal point to be used in
displaying the OUT parameter and parameters which have the
same scaling as OUT.
0-100% OUT
12 GRANT_DENY Options for controlling access of host computers and local
control panels to operating, tuning, and alarm parameters of
the block.
13 CONTROL_OPTS Options which the user may select to alter the calculations
done in a control block.
0
14 STATUS_OPTS Option of status which the user may select to alter input and
output block processing.
15 IN The primary input value of the block, required for blocks that
filter the input to get the PV.
PV
16 PV_FTIME Time constant of a single exponential filter for the value to be
rationed, in seconds.
Positive or zero 0 Sec
17 BYPASS The normal control algorithm may be bypassed through this
parameter. When bypass is set, the setpoint value (in percent)
will be directly transferred to the output. To prevent a bump
on transfer to/from bypass, the setpoint will automatically be
initialized to the output value or process variable,
respectively, and the path broken flag will be set for one
execution.
1: Off, 2: On 0