J DF 3 0 0 |
FI EL D I N D I C ATO R | O I/J D F 3 0 0 - EN R E V. B
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Block Mapping
Idx
Parameter
Description / Range / Selections / Notes
0
BLOCK_OBJ
In the Block Object data structure, there are different items describing the block characteristics. Execution period,
Number of parameters in the block, the DD Revision, Profile Revision, View Objects characteristics and so on
1
ST_REV
The revision level of the Static data associated with the Function Block. The revision level is incremented each time a
static parameter value (S – under Storage) in the block is changed.
2
TAG_DESC
The user description of the intended application of the block
3
STRATEGY
The strategy field can be used to identify grouping of blocks. This data is not checked or processed by the block.
4
ALERT_KEY
The identification number of the plant unit. This information may be used in the host for sorting alarms, etc.
5
MODE_BLK
TARGET
AUTO / MAN / OOS
The selectable modes by the operator.
ACTUAL
The mode the block is currently in.
PERMITTED
AUTO / MAN / OOS
Allowed modes that the target may take on
NORMAL
AUTO
The common mode for the Actual.
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.
7
OUT
8
OUT_SCALE
9
GRANT_DENY
Options for controlling access of host computer and local control panels to operating, tuning and alarm parameters
of the block.
10
STATUS_OPTS
Options which the user can select for the block processing of status. The available selections are:
Bit
0
IFS if BAD IN
Bit
2
Use Uncertain as Good
11
SEL_1
First input value to the selector
Expressed in
OUT_SCALE Unit
12
SEL_2
Second input value to the selector
13
SEL_3
Third input value to the selector
14
SEL_TYPE
Options which the user can select for the block processing of status. The available selections are:
1
High
2
Low
3
Middle
15
BKCAL_IN
The analog input value from another block’s
BKCAL_OUT
output that is used to prevent reset windup and to initialize
the control loop. Expressed in
OUT_SCALE Unit
16
OUT_HI_LIM
Acceptable value:
OUT_SCALE
+/- 10%
Expressed in
OUT_SCALE Unit
Limits the maximum output value.
17
OUT_LO_LIM
Limits the minimum output value.
18
BKCAL_SEL_1
Control selector Value and Status associated with SEL_1 input which is provided to BKCAL_IN of the block connected
to SEL_1 in order to prevent reset windup. Expressed in OUT_SCALE Unit
19
BKCAL_SEL_2
Control selector Value and Status associated with SEL_2 input which is provided to BKCAL_IN of the block connected
to SEL_2 in order to prevent reset windup. Expressed in OUT_SCALE Unit
20
BKCAL_SEL_3
Control selector Value and Status associated with SEL_3 input which is provided to BKCAL_IN of the block connected
to SEL_3 in order to prevent reset windup. Expressed in OUT_SCALE Unit
21
UPDATE_EVT
This alert is generated by any change to the static data
22
BLOCK_ALM
The block alarm is used for all configuration, hardware, connection failure or system problems in the block.
The cause of the alert is entered in the subcode field. The first alert to become active will set the Active Status in the
status parameter. As soon as the Unreported status is cleared by the alert reporting task, another block alert may be
reported without clearing the Active Status, if the subcode has changed
