User Manual

<Appendix 1. Function Block Parameters>
A-11
IM 21B04C01-01E
A1.5 Parameters of OS Block
Relative
Index
Index Parameter Name
Default
(factory setting)
Write Description
0 14000 Block Header Block tag
= O/S
Information about this block, including the block
tag, DD revision, execution time.
1 14001 ST_REV 0 Incremented when a change in made to the
parameter settings for the OS block to indicate
the revision level of the settings, and used to see
whether or not there is a change in parameter
settings
2 14002 TAG_DESC Spaces Universal parameter storing the description of the
tag.
3 14003 STRATEGY 1 Universal parameter used by an upper-level
system to classify the function blocks.
4 14004 ALERT_KEY 1 Universal parameter used as a key to identify
the point from which an alert is issued; normally
used by an upper-level system to select alerts
to provide to a particular operator who covers a
specic area of the plant.
5 14005 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 14006 BLOCK_ERR Indicates the error statuses related to the block
itself
7 14007 SP Auto Indicates the setpoint for the block.
8 14008 OUT_1 O/S Indicates the value and status of output 1.
9 14009 OUT_2 O/S Indicates the value and status of output 2.
10 14010 OUT_1_RANGE 0-100% Denes the range of OUT_1 (output 1).
11 14011 OUT_2_RANGE 0-100% Denes the range of OUT_2 (output 2).
12 14012 GRANT_DENY 0 Option to control access from the host computer
and local control panel to tuning and alarm
parameters.
13 14013 STATUS_OPTS 0 O/S Denes block actions depending on block status
conditions.
14 14014 CAS_IN Cascade input.
15 14015 BKCAL_OUT Value returned to BLCAL_IN of the upstream
block; used by the upstream block to prevent
reset windup and perform bumpless transfer to
closed-loop control.
16 14016 IN_ARRAY (0, 0, 0, 0) O/S Settings used to convert SP to OUT_1
17 14017 OUT_ARRAY (0, 0, 0, 0) O/S Settings used to convert SP to OUT_2
18 14018 LOCKVAL 2 Denes the value of OUT_1 outside the set
endpoints of operation characteristic. 2 = Lock
19 14019 BKCAL_IN_1 Read-back value of OUT_1 returned from the
downstream block.
20 14020 BKCAL_IN_2
Read-back value of OUT_2 returned from the
downstream block.
21 14021 BAL_TIME 0 Denes the balancing time. After the cascade
connection to one downstream block has already
been established, the cascade connection to the
other downstream block will be established over
the time period dened by this parameter.
22 14022 HYSTVAL 0 Denes the hysteresis for LOCKVAL. When it is
set to ‘No Lock.’
23 14023 UPDATE_EVT Shows the contents of an update event (a change
to the setpoint) upon occurrence.
24 14024 BLOCK_ALM Shows the contents of a block alarm upon
occurrence.