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Programming and operating the FM 352-5
6.10 Operations in the FM 352-5 Library
6.10.2
Pulse timers (TP16 and TP32)
Description
This timer is available in two versions: As a 16-bit (FB116) and a 32-bit (FB113) timer.
Pulse timers "TP16" and "TP32" generate a pulse with the length PT.
A rising signal edge at input IN starts the pulse. Output Q remains set for the time PT
regardless of changes in the input signal (in other words even when the IN input changes
back from 0 to 1 before the time PT has expired). The ET output provides the time for which
output Q has already been set. The maximum value of the ET output is the value of the PT
input. Output ET is reset when input IN changes to 0; however, not before the time PT has
expired.
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Figure 6-42
Table 6- 49
Pulse Timer (TP)
LAD representation
TP
EN
Timing Diagram for Pulse Timer (TP)
ENO
Parameter
Data type
Addresses
Description
IN
BOOL
Input
Start input.
PT
INT, DINT
Input, constant
Duration of the pulse in 10 μs units.
PT must be a positive constant.
IN
Q
Q
BOOL
Output
Status of the time.
PT
ET
ET
INT, DINT
Output
Elapsed time.
Note: No logic is allowed at the EN input.
FM 352-5 high-speed Boolean processor
138
Operating Manual, 05/2011, A5E00131318-04