Manual

<Appendix 5. PID Block>
A5-2
IM 01S01C01-01EN
A5.3 Parameters of PID Block
NOTE: In the table below, the Write column shows the modes in which the respective parameters can be
written. A blank in the Write column indicates that the corresponding parameter can be written in all modes of
the PID block. A dash (-) indicates that the corresponding parameter cannot be written in any mode.
Index
Index
PID1
Index
PID2
Parameter
Name
Default
(factory setting)
Write Valid Range Description
0 8000 8100 Block Header TAG: “PID” Block Tag
= O/S
Information on this block such as Block
Tag, DD Revision, Execution Time etc.
1 8001 8101 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.
2 8002 8102 TAG_DESC Null The user description of the intended
application of the block.
3 8003 8103 STRATEGY 1 The strategy eld can be used to
identify grouping of blocks. This data is
not checked or processed by the block.
4 8004 8104 ALERT_KEY 1 1 to 255 The identication number of the plant
unit. This information may be used in
the host for sorting alarms, etc.
5 8005 8105 MODE_BLK A universal parameter that represents
block operating condition. It comprises
the Actual, Target, Permit and Normal
modes.
6 8006 8106 BLOCK_ERR — This parameter reects 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 8007 8107 PV — Measured value; the non-dimensional
value that is converted from the input
(IN) value based on the PV_SCALE
values and ltered.
8 8008 8108 SP 0 AUTO PV_SCALE ±10% Setpoint
9 8009 8109 OUT MAN Output
10 8010 8110 PV_SCALE 100
0
1342
1
O/S Upper and lower scale limit values used
for scaling of the input (IN) value.
11 8011 8111 OUT_SCALE 100
0
1342
1
O/S Upper and lower scale limit values used
for scaling of the control output (OUT)
value to the values in the engineering
unit.
12 8012 8112 GRANT_DENY 0 AUTO Options for controlling access of host
computers and local control panels to
operating, tuning and alarm parameters
of the block.
13 8013 8113 CONTROL_
OPTS
0 O/S Setting for control action. See Section
A5.13 for details.
14 8014 8114 STATUS_OPTS 0 O/S See Section A5.15 for details.
15 8015 8115 IN 0 Controlled-value input.
16 8016 8116 PV_FTIME 2 AUTO Non-negative Time constant (in seconds) of the rst-
order lag lter applied to IN.
17 8017 8117 BYPASS 1 (off) MAN 1, 2 Whether to bypass the control
computation.
1 (off): Do not bypass.
2 (on): Bypass.
18 8018 8118 CAS_IN 0 Cascade setpoint
19 8019 8119 SP_RATE_DN +INF Positive Rate-of-decrease limit for setpoint (SP).
20 8020 8120 SP_RATE_UP -INF Positive Rate-of-increase limit for setpoint (SP).
21 8021 8121 SP_HI_LIM 100 PV_SCALE ±10% Upper limit for setpoint (SP).