205
Parameters of PID and PID2
Function Block Parameters
Parameters of PID and PID2 Blocks (Optional)
Table 65 lists the PID parameters for PID1. PID2 uses the same parameters but with a
starting Index of 8100.
23 14023 UPDATE_EV
T
Shows the contents of an update event upon
occurrence.
24 14024 BLOCK_ALM Shows the contents of a block alarm upon
occurrence.
Table 65 PID Block Parameters
Relative
Index
Index Parameter
Name
Default
(factory
setting)
Write Description
0 8000 Block Header Block Tag
=O/S
Information about this block, including the
block tag, DD revision, execution time
1 8001 ST_REV 0 — Incremented when a change is made to the
parameter settings for the PID block to indicate
the revision level of the settings, and used to
see whether there is a change in parameter
settings.
2 8002 TAG_DESC Spaces Universal parameter storing the description of
the tag.
3 8003 STRATEGY 1 Universal parameter used by an upper-level
system to classify the function blocks.
4 8004 ALERT_KEY 1 Universal parameter used as a key to identify
the point from which an alert is issued;
normally used by an upperlevel system to
select alerts to provide to a particular operator
who covers a specific area of the plant.
5 8005 MODE_BLK O/S Universal parameter that indicates the block
operation conditions and is composed of actual
mode, target mode, permitted modes, and
normal mode.
6 8006 BLOCK_ERR — — Indicates the error statuses related to the block
itself.
Table 64 OS Block Parameters (Continued)
Relative
Index
Index Parameter
Name
Default
(factory
setting)
Write Description
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