Yokogawa YVP20S User Manual
Page 40
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5-11
IM 21B04C50-01E
<Toc> <Ind>
<5. FOUNDATION FIELDBUS OVERVIEW>
When the positioner is receiving its position setpoint from a remote computer system such
as a DCS then the normal state for the positioner will be as shown in Figure 5.12. In this
example the level control valve LV201 is receiving its signal from a DCS. The AO block is
shown in RCas mode.
Figure 5.12 Remote Cascade Normal State
If an internal PID is used in a cascade where the PID receives a setpoint from a remote
computer system, then the normal state will have the PID in RCas mode and the AO will be
in Cas mode (not shown).
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