Emerson PaCSystems VersaMax Series, Руководство пользователя

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User Manual Chapter 14
GFK-1503F Jan 2020
PID Built-in Function Block 258
Words Parameter/Description Low Bit
Units Range
2 4 Enable Should
normally be 1.
Otherwise,
block is never
called.
3 8 UP / Raise
If 1 and
Manual (bit 1)
is 1, CV is
incremented
every
solution.
4 16 DN / Lower If 1 and Manual
(bit 1) is 1, CV is
decremented
every solution.
16
(A
15) Internal SP
Tracks the SP input. If Override = 1, must be set
externally to solve the PID algorithm using an
alternate SP value. The original SP value is
maintained until overwritten.
Set and
maintained
by the
CPU,
unless bit 1
0
(Override)
of Control
Word is
set to 1. Non-
configurable
, unless bit 1
0 (Override)
of Control
Word is set
to 1.
17
(A16) Internal CV
Tracks CV output. Set and
maintained
by the CPU. Non-
configurable
.
18
(A17) Internal PV
Tracks PV input. Must be set externally if
Override bit is set to 1. Set and
maintained
by the CPU,
unless bit
10
(Override)
of Control
Word is set
to 1. Non-
configurable
unless bit 10
(Override) of
Control
Word is set
to 1.