Function Blocks 
PI Pulse Input 
Revision 11    HC900 Hybrid Control Designer Function Block Reference Guide  265 
2/07     
Properties Group  Parameter  Index #  Description  Value or Selection 
EU per Minute, or  
EU per Hour 
Preset Use Remote 4 
Uses RPRES input 
pin in EU. 
Click to select. 
 Use Local 4 
Uses local preset 
count in EU. 
Click to select. Enter 
value. Enter 0 for no alarm 
indication on PREI (there 
are no limits). 
Preset Output 
Action 
Latched Until 
Reset 
2  
The PFQ module output 
transistor latches ON until 
reset. PREI latches ON 
until PFQ module 
acknowledges the reset. 
 Momentary 2  
The PFQ module output 
transistor turns ON for 1 
second. PREI turns on for 
approx. 1 second. Counter 
is reset to zero and count 
continues. 
 
Example 
 
Figure 69 PI function block example