8.5 Single counting
Overview
In this mode an FM°450-1 counter counts once from the load value up to the count limit.
Select gate function
In this mode you can select the gate function Options:
• SW gate
• HW gate, level-controlled or edge-controlled
Counter status
Time
Load value
Upper count limit
Lower count limit
Gate start
Gate stop Gate start
STS_OFLW
Figure 8-2 Single counting with load value and gate function
Open and close SW gate
You open and close the SW gate and set the counter to the load value with the input parameter
SW_GATE of the FC CNT_CTRL.
Action Initiating event
Open SW gate Set SW_GATE
Close SW gate Reset SW_GATE
Opening and closing HW gate
You open and close the hardware gate and set the counter to the load value by applying or
removing the relevant signals at the inputs 1I0 and 1I1 (Counter 1) and/or 2I0 and 2I1 (Counter
2).
Action Initiating event
Opening HW gate (level controlled) Applying signal to input 1I0 (2I0)
Opening HW gate (edge controlled) Applying positive edge to input 1I0 (2I0)
Closing HW gate (level controlled) Removing signal from input 1I0 (2I0)
Closing HW gate (edge controlled) Applying positive edge to input 1I1 (2I1)
In the case of a level-controlled HW gate, a signal at output 1I0 (2I0) is used to reopen the gate
and set the relevant counter to the load value.
Modes, settings, parameters and commands
8.5 Single counting
Counter module FM 450-1
Equipment Manual, 03/2022, A5E03648739-AC 61
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