Rockwell-automation 1760-xxxx Pico GFX-70 Controllers User Manual Uživatelský manuál stáhnout pdf (Strana 187)

Publication 1760-UM002B-EN-P - March 2005

Wiring with Pico GFX-70 4-77

• Constants

• Markers MD, MW, MB

• Analog inputs IA01 to IA04

– IA01: terminal I7

– IA02: terminal I8

– IA03: terminal I11

– IA04: terminal I12

• Analog output QA01

• Actual value

…QV> of another function block

Actual Value …QV>

The actual value …QV> can be assigned the following operands:

• Markers MD, MW, MB

• Analog output QA01

Displaying the Parameter Set in the PARAMETERS Menu

• + Access enabled

• - Access disabled

Contacts

• CF01OF to CF04OF: Actual value ≥ Upper set point

• CF01FB to CF04FB: Actual value ≤ Lower set point

• CF01ZE to CF04ZE: Actual value = Zero

Coils

CF01EN to CF04EN: enable of the counter with coil status = 1.

Memory Requirement of the Frequency Counter

The frequency counter function block requires 40 bytes of memory plus 4

bytes per constant on the function block inputs.

Retention

The frequency counter does not retain actual values, as the frequency is

re-measured continuously.

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