Rockwell-automation 1760-xxxx Pico GFX-70 Controllers User Manual Manual de usuario descargar pdf (Pagina 148)

Publication 1760-UM002B-EN-P - March 2005

4-38 Wiring with Pico GFX-70

Function Blocks

The function blocks are used to simulate some of the devices used in

conventional open-loop and closed-loop control systems. Pico GFX-70

provides the following function blocks:

• Analog value comparator/threshold controller (only with Pico GFX-70

24V dc variants)

• Arithmetic

– addition, subtraction, multiplication, division

• Compare data blocks

• Transfer data blocks

• Boolean sequences

• Counters

– up and down counters with upper and lower threshold values, preset

– frequency counters

– high-speed counters

– incremental encoder counters

• Comparators

• Text, output freely editable texts, enter values

• Data function block

• PID controllers

• Smoothing filters

• Value scaling

• Pulse width modulator

• Read (GET) Pico-Link data

• Time switches

– weekday/time

– year, month, day (date)

• Numerical converters

• Master reset

• Operating hours counter

• Write (PUT) Pico-Link data

• Synchronization of date and time via the Pico-Link

• Timing relays

– on-delayed

– on-delayed with random switching

– off-delayed, also retriggerable

– off-delayed with random switching, also retriggerable

– on and off delayed

– on and off delayed with random switching

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