Example 3 - Cycling An Fst On A Periodic Basis - Emerson Micro Motion 3711 Configuration And Use Manual

Function Sequence Tables
Figure 11-7
11.9.3 Example 3 – Cycling an FST on a periodic basis
In this example, the FST is set to run on a 10-second cycle. A timer is used to determine how much, if
any, of the cycle remains after the FST executes, and therefore the number of seconds to wait before
restarting the FST.
The FST is shown in Figure 11-8. In this FST:
• Step 0: Set Timer 1 to 100 100-millisecond intervals (10 seconds).
• Steps 1–4: These are the steps to be cycled.
• Step 5: Store the value in Timer 1 to RR.
• Step 6: Convert the value in Timer 1 to seconds, and store the result in RR.
• Step 7: Wait for the number of seconds specified in RR.
• Step 8: Complete the FST, delay 100 milliseconds, then restart at Step 0.
Figure 11-8
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FST Example 2
FST Example 3
FST body
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Micro Motion Model 3711 Gas Flow Computers