Rockwell-automation 1760-xxxx Pico GFX-70 Controllers User Manual Manual do Utilizador descarregar pdf (Página 205)

Publication 1760-UM002B-EN-P - March 2005

Wiring with Pico GFX-70 4-95

Function of the Data Function Block

Figure 4.40 Signal diagram of data function block

1: value at input >I1

2: trigger coil DB..T_

3: value on DB..QV>

PID Controller

Pico GFX-70 provides 32 PID controllers DC01 to DC32. The PID controllers

allow you to implement closed-loop control functions.

IMPORTANT

The value at input >I1 is only transferred with a rising

trigger edge to an operand (e.g.: MD42, QA01) on output

QV>. Output QV retains its value until it is overwritten.

ATTENTION

A knowledge of closed-loop control is required to use the

PID controllers.

The control system must be familiar so that the PID

controller can function correctly.

2

3

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