209
Parameters of IS (SIGSEL) Block
Function Block Parameters
Parameters of IS (SIGSEL) Block
60 8060 HI_HI_ALM — – Alarm that is generated when the PV value has
exceeded the HI_HI_LIM value and whose
priority order* is defined in HI_HI_PRI.
* Priority order: Only one alarm is generated at
a time. When two or more alarms occur at the
same time, the alarm having the highest
priority order is generated.
When the PV value has decreased below
[HI_HI_LIM - ALM_HYS], HI_HI_ALM is reset.
61 8061 HI_ALM — – As above.
62 8062 LO_LO_ALM — – As above. Reset when the PV value has
increased above [LO_LIM + ALM_HYS].
63 8063 LO_ALM — — As above.
64 8064 DV_HI_ALM — — An alarm that is generated when the value of
[PV - SP] has exceeded the DV_HI_LIM value.
Other features are the same as HI_HI_ALM.
65 8065 DV_LO_ALM — — Alarm that is generated when the value of [PV -
SP] has decreased below the DV_LO_LIM
value. Other features are the same as
LO_LO_ALM.
Table 66 IS Block Parameters
Relative
Index
Index Parameter
Name
Default
(factory
setting)
Write Description
0 17000 Block Header Block Tag
=O/S
Information about this block, including the
block tag, DD revision, execution time
1 17001 ST_REV 0 — Incremented when a change is made to the
parameter settings for the IS block to indicate
the revision level of the settings, and used to
see whether there is a change in parameter
settings.
Table 65 PID Block Parameters (Continued)
Relative
Index
Index Parameter
Name
Default
(factory
setting)
Write Description
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