Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 196)

Publication 1760-UM002B-EN-P - March 2005
4-86 Wiring with Pico GFX-70
You integrate a counter into your circuit in the form of a contact and coil. The
counter relay has different coils and contacts.
Figure 4.35 Pico GFX-70 circuit diagram with high-speed incremental encoder
counter
Parameter display and parameter set for high-speed incremental encoder
counter:
In the parameter display of a counter relay you change setpoint values and/or
the preset value and the enable of the parameter display.
Value Range
The function block operates in the integer range from
-2147483648 to 2147483647.
Each pulse is counted twice.
Example: value at CI..QV>= 42000
IMPORTANT
To prevent unpredictable switching states, use each coil of a
relay once only in the circuit diagram.
Use a counter input for the CF, CH, CI counters only once.
I 05---------------------------[ CI01EN
I 06---------------------------[ CI01RE
I 08---------------------------[ CI01SE
CI01OF-------------------------[ Q 01
CI01FB-------------------------[ Q 02
CI01ZE-------------------------[ Q 03
CI01CY-------------------------S M 94
CI01 +
>SH
>SL
>SV
QV>
CI01 High-speed incremental encoder counter function block number 01
+ Appears in the parameter display
>SH Upper setpoint
>SL Lower setpoint
>SV Defined actual value (Preset)
QV> Actual value in RUN mode