Manual

PoBlocks user manual (March 31, 2014)
34
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16.44. Trigger / timing - Clock source
Description
Clock source
Inputs
Half time-period (32-bit integer): Dynamic Half time-period optional input
Outputs
Clock (Logic):
Properties
Half time-period (Integer, 1 to 3600000): Half of the clock time period (in
milliseconds - set to 500 for 1 Hz clock)
Show dynamic input (Logic): If set to True, Half-time period input is enabled
Remarks
None
16.45. Trigger / timing - Rising edge
Description
Rising edge triggers the output when the Input signal value changes from 0 to 1
(rises)
Inputs
Input (Logic): Input signal
Outputs
Change (Logic): Output indicating a change in the input signal
Properties
None
Remarks
None
16.46. Trigger / timing - Falling edge
Description
Falling edge triggers the output when the Input signal value changes from 1 to 0
(falls)
Inputs
Input (Logic): Input signal
Outputs
Change (Logic): Output indicating a change in the input signal
Properties
None
Remarks
None
16.47. Trigger / timing - Up counter
Description
Up counter counts the Clock input positive (rising) changes from 0 to value, specified
by PV input
Inputs
Clock (Logic): Counter pulse signal
Reset (Logic): When 1, resets the counter value Value to 0
PV (32-bit integer): Maximum counter value
Outputs
Q (Logic): Indicates whether counter has reached maximum value
Value (32-bit integer): Current counter value
Properties
Default value (Integer): Default reset value of the counter
Retain on reset (Logic): If True, the value is saved to battery-backed RAM. Also
disables default value setting.
Initial value (Integer): The initial value of the retained block after it gets uploaded to
the device.