Chapter 6 FBD Block Diagram Programming 168
(6) Counter Mode 5 (Continuous Count, Up-Down Count, Non-Retentive)
Mode 5 Counter’s operation is similar to Mode 2 except its current count value is continuous and non-retentive. The status bit
is fixed to the non-zero preset value regardless of the state of the direction bit. Its status bit will be ON when the counter current
value is not less than its preset value and will be OFF when the current value is less than its preset value.
Counting Input
→
→
←
→
Counting Parameter
Note: The “C” means compare count;
The “>”means the current value appeared will be greater than present value.
※ Under this mode, the count will continuous after reaching its preset value;
※ The current value is always 0 regardless of the state of its direction bit when the reset is availability;
※ The current value is always 0 regardless of the state of its direction bit when the smart switches between RUN and
STO P.
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