WIKA T53 - Manual (Page 33)

33
4.10 PID Control Block Parameter List
Parameter
Rel.
Index Description
Type Store Size
byte
RO /
R/W Min. Max. Default
ST_REV 1
The .revision .level .of .the .static .data .associated .with .the .
function .block . .To .support .tracking .changes .in .static .para-
meter .attributes, .the .associated .block’s .static .revision .
parameter .will .be .incremented .each .time .a .static .parameter .
attribute .value .is .changed . .Also, .the .associated .block’s .
static .revision .parameter .may .be .incremented .if .a .static .
parameter .attribute .is .written .but .the .value .is .not .changed .
Un-
signed .
16
SRC RO 0
TAG_DESC
The .user .description .of .the .intended .application .of .the .
block .
Octet .
String
SRC 3 R/W spaces
STRATEGY 3
The .strategy .field .can .be .used .to .identify .grouping .of .
blocks . .This .data .is .not .checked .or .processed .by .the .block .
Un-
signed .
16
SRC R/W 0
ALERT_kEY 4
Contains .the .identification .number .of .the .plant .unit . .It .helps .
to .identify .the .location .(plant .unit) .of .an .event .
Un-
signed .
8
SRC 1 R/W 1 55 0
MODE_BLk 5
Contains .the .current .mode .and .the .permitted .and .normal .
mode .of .the .block .
DS-69 Mix 4 Mix O/S
BLOCk_ERR 6
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 .
Bit .
String
D RO
PV 7
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 .
DS-65 D 5 RO
SP 8 The .analog .setpoint .of .this .block . DS-65 N 5 R/W PV_SCALE .
±10%
OUT 9
The .primary .analog .value .calculated .as .a .result .of .executing .
the .function .
DS-65 N 5 R/W
OUT_SCALE .
±10%
PV_SCALE 10
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 .
DS-68 SRC 11 R/W 0-100%
OUT_SCALE 11
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 .
DS-68 SRC 11 R/W 0-100%
GRANT_DENY 1
Options .for .controlling .access .of .host .computer .and .local .
control .panels .to .operating, .tuning .and .alarm .parameters .of .
the .block .
DS-70 SRC R/W
CONTROL_OPTS 13
Options .which .the .user .may .select .to .alter .the .calculations .
done .in .a .control .block .
Bit .
String
SRC R/W 0
STATUS_OPTS 14
Options .which .the .user .may .select .in .the .block .processing .
of .status .
Bit .
String
SRC R/W 0
IN 15
The .primary .input .value .of .the .block, .required .for .blocks .
that .filter .the .input .to .get .the .PV .
DS-65 N 5 R/W
PV_FTIME 16
Time .constant .of .a .single .exponential .filter .for .the .PV, .in .
seconds .
Float SRC 4 R/W Positive 0
BYPASS 17
The .normal .control .algorithm .may .be .bypassed .through .this .
parameter . .When .bypass .is .set, .the .setpoint .value .(in .per-
cent) .will .be .directly .transferred .to .the .output . .To .prevent .a .
bump .on .transfer .to/from .bypass, .the .setpoint .will .automati-
cally .be .initialized .to .the .output .value .or .process .variable, .
respectively, .and .the .path .broken .flag .will .be .set .for .one .
execution .
Un-
signed .
8
SRC 1 R/W 1 0
CAS_IN 18
This .parameter .is .the .remote .setpoint .value, .which .must .
come .from .another .Fieldbus .block, .or .a .DCS .block .through .
a .defined .link .
DS-65 N 5 R/W
SP_RATE_DN 19
Ramp .rate .at .which .downward .setpoint .changes .are .acted .
on .in .Auto .mode, .in .PV .units .per .second . .If .the .ramp .rate .is .
set .to .zero, .then .the .setpoint .will .be .used .immediately . .For .
control .blocks, .rate .limiting .will .apply .only .in .Auto . .For .out-
put .blocks, .rate .limiting .will .apply .in .Auto, .Cas, .and .RCas .
modes .
Float SRC 4 R/W Positive +INF
SP_RATE_UP 0
Ramp .rate .at .which .upward .setpoint .changes .are .acted .on .
in .Auto .mode, .in .PV .units .per .second . .If .the .ramp .rate .is .set .
to
zero, .then .the .setpoint .will .be .used .immediately . .For .con-
trol .blocks, .rate .limiting .will .apply .only .in .Auto . .For .output .
blocks, .rate .limiting .will .apply .in .Auto, .Cas, .and .RCas .
modes .
Float SRC 4 R/W Positive +INF
SP_hI_LIM 1
The .setpoint .low .limit .is .the .lowest .setpoint .operator .entry .
that .can .be .used .for .the .block .
Float SRC 4 R/W PV_SCALE .
±10%
100
SP_LO_LIM
The .setpoint .high .limit .is .the .highest .setpoint .operator .entry .
that .can .be .used .for .the .block .
Float SRC 4 R/W PV_SCALE .
±10%
0