Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 179)

Publication 1760-UM002B-EN-P - March 2005
Wiring with Pico GFX-70 4-69
Figure 4.29 Pico GFX-70 circuit diagram with counter relay
Parameter Display and Parameter Set for the Counter Relay
In the parameter display of a counter relay you change set point values and/or
the preset value and the enabling of the parameter display.
Value Range
The function block operates in the integer range from
-2147483648 to 2147483647.
Behavior when value range is exceeded
The function block sets the switching contact C .. CY to the status 1 and
retains the value of the last valid operation.
I 05---------------------------[ C 20C_
I 06---------------------------[ C 20RE
I 07---------------------------[ C 20D_
I 08---------------------------[ C 20SE
C 20OF-------------------------[ Q 01
C 20FB-------------------------[ Q 02
C 20ZE-------------------------[ Q 03
C 20CY-------------------------S M 42
C 20 +
>SH
>SL
>SV
QV>
C 20 Counter relay function block number 20
+ Appears in the parameter display
>SH Upper set point
>SL Lower set point
>SV Defined actual value (Preset)
QV> Actual value in RUN mode
IMPORTANT
The counter C counts every rising edge on the counter
input. If the value range is exceeded, the switching contact
C ..CY switches to status 1 for one cycle per rising edge
detected.