Rockwell-automation 1746-NI8 SLC 500 Analog Input Modules User Manual Manuel d'utilisateur télécharger pdf (Page 58)

6–3

Ladder Logic Configuration Examples

Publication

17466.8 - April 1997

The analog input module was designed to interface directly to the

SLC 5/02t or later processor PID instruction without the need for

an intermediate scale operation.

Example - Use 1746-NI8 channel data as the process variable in the

PID instruction.

1. Select scaled-for-PID as the data format in the channel

configuration word.

2. Specify the 1746-NI8 channel data word as the process variable

for the PID instruction.

Program Listing

PID

Control

Block

N11:0

Process Variable

I:3.0

Control Variable

N11:23

Control Block Length

] [

MOVE

Source N10:0

3083

Dest O:3.0

First Pass Bit

S2:1

Channel 0

MOV

Initialize 1746NI8

Channel 0

Status

SCL

Scale

Source N11:23

Rate

[/10000]

Offset ?

Dest ?

The Rate and Offset parameters should

be set per your application. The Dest

will typically be an analog output

channel. Refer to your programming

device's user manual or Analog I/O

Modules User Manual for specific

examples of the SCL instruction.

END

PID

DATA

FILE N10

Offset 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

N10:0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 1

Interfacing to the PID

Instruction

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 90 91

Commentaires sur ces manuels

Pas de commentaire

Rockwell-automation 1746-NI8 SLC 500 Analog Input Modules User Manual Manuel d'utilisateur Page 58

Commentaires sur ces manuels

Produits connexes et manuels pour Équipement Rockwell-automation 1746-NI8 SLC 500 Analog Input Modules User Manual