GE Valve Software Tools MN-Valvue-FF-IOM Service Manual Page 136

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ValVueFF Software Interface to FVP
120
GE Energy
PID Status Frame
States and Modes
The permitted states of the PID block are grouped in the State frame:
RCAS Select the R button. In this mode, the Set Point of the PID block is
set by a remote application that writes to the RCAS_IN parameter
regularly. This mode is allowed only if a remote application is
soft-wired to the RCAS_IN parameter of the PID block.
CAS Select the C button. In this mode, the Set Point of the PID block is
set by a Foundation Fieldbus function block. This mode is
allowed only if a Foundation Fieldbus function block OUT is
soft-wired to the CAS_IN parameter of the PID block, and sched-
uled.
Auto Select the L button. In this mode, the Set Point of the PID block is
set by the Set Point slider or the Set Point text box.
Man Select the M button. In this mode, the output of the PID is set by
the output slider or the output text box. The PID algorithm in not
processed in Man.
Simulate Select the SIM Button. A ValVueFF user must have the permis-
sion level 8. Simulate allows a PID demonstration without a real
process.
Other Usually IMan or OOS is indicated by Other button. This button is
an indicator only. It does not change the mode of the PID block.
CAUTION Never use Simulate with a device connected to a live process.
Simulate destroys any existing control linkages. After using
Simulate, the function block links must be re-configured using
a configuration tool.
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