Position Detection - Siemens SIMATIC ET 200S Operating Instructions Manual

1Count5V
3.9 Position feedback
3.9.2

Position detection

Definition
In this mode, the 1Count5V counts continuously starting from the load value:
● If the 1Count5V reaches the high count limit when counting up, and another count pulse
● If the 1Count5V reaches the low count limit when counting down, and another count
● The high counting limit is set at +2147483647 (2
● The low counting limit is set to –2147483648 (–2
Function of the Digital Input
For the "Function DI" parameter, select one of the following functions for the digital input:
● Input
● HW gate (see section "Gate Functions for Position Detection (Page 207)")
● Latch function (see section "Latch Function (Page 210)")
● Synchronization (see section "Synchronization (Page 213)")
● HW enable for synchronization (see section "Synchronization (Page 213)")
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then comes, it will jump to the low count limit and continue counting from there without
losing a pulse.
pulse then comes, it will jump to the high count limit and continue counting from there
without losing a pulse.
Figure 3-35 Count Continuously with Gate Function
– 1).
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).
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Technological Functions
Operating Instructions, 06/2010, A5E00124867-07