YOKOGAWA FVX110, User Manual

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<Appendix 4. Arithmetic (AR) Block>
A4-6
IM 01S01C01-01EN
A4.5 List of the Arithmetic Block Parameters
Relative
Index
Index
AR1
Index
AR2
Parameter
Write
Mode
Valid
Range
Initial
Value
View
Description / Remarks
1 2 3 4
0 17500 17600 BLOCK_
HEADER
O/S TAG=“AR” Information relating to this function block, such as
block tag, DD revision, and execution time.
1 17501 17601 ST_REV 0 2 2 2 2 Indicates the revision level of the set parameters
associated with the Arithmetic block. If a setting
is modified, this revision is updated. It is used to
check for parameter changes, etc.
2 17502 17602 TAG_DESC Null A universal parameter that stores comments
describing tag information.
3 17503 17603 STRATEGY 1 2 A universal parameter intended for use by a high-
level system to identify function blocks.
4 17504 17604 ALERT_KEY 1-255 1 1 Key information used to identify the location at
which an alert has occurred.
Generally, this parameter is used by a high-level
system to identify specific areas in a plant that are
under the control of specific operators, to separate
necessary alerts only. This is one of the universal
parameters.
5 17505 17605 MODE_BLK AUTO 4 4 A universal parameter representing the operation
status of the Arithmetic block. It consists of the
Actual, Target, Permit, and Normal modes.
6 17506 17606 BLOCK_
ERR
0 2 2 Indicates the error status relating to the Arithmetic
block.
The bit used by this function block is as follows:
Bit 1: Block Configuration Error
Bit 15: O/S mode
7 17507 17607 PV 0 5 5 The result of a range extension function is
substituted into this.
When viewed from the computing equation, PV is
the main input.
8 17508 17608 OUT MAN 0 5 5 Block output.
9 17509 17609 PRE_OUT 0 5 5 Always indicates the calculation result. The value is
substituted into OUT in Auto mode.
Indicates PV scaling (for making a memo).
Output scaling for the host (for making a memo).
10 17510 17610 PV_SCALE O/S 100
0
1342
1
11
11 17511 17611 OUT_
RANGE
100
0
1342
1
11
12 17512 17612 GRANT_
DENY
0 2 The parameter used to check if various operations
have been executed. The bits in the GRANT
parameter corresponding to various operations
are set before any of them are executed. After the
operations are complete, the DENY parameter is
checked to find out if any bit corresponding to the
relevant operation has been set. If no bit has been
set, it is evident that the operations have been
executed successfully.