Yokogawa digitalYEWFLO (DY-FF) - Manual (Page 107)

Index Parameter Name Initial Value
Write
Mode
Defi nition
29 INTEG_OPTS 0x0004 AUTO
Specifi es an integration optional function.
bit Option Name Description
0 Input 1 accumulate Selects Rate or Accum input of IN_1.
1 Input 2 accumulate Selects Rate or Accum input of IN_2.
2 Flow forward Integrates forward fl ow (interprets reverse fl ow as zero).*
3 Flow reverse Integrates reverse fl ow (interprets forward fl ow as zero).*
4 Use uncertain
Uses an input value of IN_1 or IN_2 whose status is “Uncertain”
regarding it as a value of “Good.”
5 Use bad
Uses an input value of IN_1 or IN_2 whose status is “Bad”
regarding it as a value of “Good.”
6 Carry
Carries over an excess exceeding the threshold at reset to the
next integration. (Note that this does not apply to UP_AUTO or
DN_AUTO.)
7 Add zero if bad
Interprets an increment as zero if the status of the increment is
“Bad.”
8 Confi rm reset
After a reset, rejects the next reset until “Confi rm” is set to
RESET_CONFIRM.
9
Generate reset
event
Generates an alert event at reset.
10~15 Reserved
* If both forward and reverse fl ows are enabled or disabled, both forward and reverse fl ows
are integrated.
30 CLOCK_PER 86400.0[sec] AUTO Specify the period at which a periodic reset is made.
31 PRE_TRIP 100000.0 AUTO Set an allowance applied before an integrated value exceeds the setpoint.
32 N_RESET 0.0 — Indicates the number of resets in the range of 0 to 999999.
33 PCT_INCL 0.0[%] —
The ratio of “the integrated values of the absolute values of the increments whose
status is Good” to the “integrated values of the absolute values of the increments
irrelevant to the status” (Equation)
34 GOOD_LIM 0.0[%] AUTO
The threshold value of the ratio of “the integrated values of the increments whose
status is Good” to all integrated values in which the status of OUT is “Good”
35 UNCERT_LIM 0.0[%] AUTO
The threshold value of the ratio of “the integrated values of the increments
whose status is Good” to all the integrated values in which the status of OUT is
“Uncertain”
36 OP_CMD_INT 0 AUTO Operator command that resets integrated values
37 OUTAGE_LIM 0.0 AUTO
Maximum time for which values can be retained in the event of power failure.
It does not effect the block operation.
38
RESET_
CONFIRM
0 AUTO
Reset confi rmation input, which is enabled when the Confi rm reset option of
INTEG_OPTS is chosen
39 UPDATE_EVT
1 AUTO
Indicates event information if an update event occurs.
1 —
0 —
0 —
0 —
40 BLOCK_ALM
1 AUTO
Indicates alarm information if a block alarm occurs.
1 —
0 —
0 —
0 —
41 ACCUM_TOTAL 0.0 — Accumulated integrated values (no extension parameter is reset)
<APPENDIX 5. INTEGRATOR (IT) BLOCK>
A5-11
IM 01F06F00-01EN