IS-NT-Async-SPI, SW Version 1.2,   ©ComAp – February 2011                                
IS-NT-Async-SPI-1.2.PDF 
 
18
 
 
 
Mov Avg 
 
 
2 
Analog input, Analog output 
Performs averaging (filtering) of the 
input value with selectable weight 
and period 
   
 
InterpolFunc 
 
 
2 
 
Linear interpolation 
Analog input  
Analog output 
   
 
ForceHistory 
 
 
4 
 
Binary input causes history record 
when changes from 0 to 1 
   
 
ForceProtect 
 
 
4 
 
Adjustable protection levels, based 
on PLC evaluation 
   
 
PID Bin 
 
 
4 
 
PID control loop with binary output 
   
 
Counter 
 
 
4 
 
Edges counter 
One limit 
Binary output 
   
 
Timer 
 
 
4 
 
Periodic signal generator 
Binary output 
Analog input 
   
 
Delay 
 
 
16 
 
Adjustable rising and falling edge 
delay 
   
 
PID Ana B 
 
4 
PID - Analog output jumps to 
adjustable Bias value when Gate 
input is active (instead zero as 
before) and starts from Bias. 
   
 
Ext. Math. 
 
8 
Math functions with expandable 
number of inputs up to 8. 
Selectable: ADD, AVG, MAX, MIN 
8 analog inputs, 1 analog output. 
   
 
Comp.Win. 
 
16 
Window comparator 
Analog input, two limits, analog 
output. Binary output is active when 
input is within limits. 
   
 
Ramp 
 
4 
Ramp - Analog input, analog output.  
Two setpoints for Ramp-up and 
down speed (in number of units per 
second). Enable-Up, Enable-Down:  
Ena/Disables the ramp. 
   
 
Up/Down 
 
4 
Analog output changing within 2 
limits (by defined rate of change - 
ramp) when Up/Down input is active. 
* Note: For detailed PLC functions description see IGS-NT-2.1-Application guide.pdf