Prosoft-technology MVI71-DFNT Manual de usuario descargar pdf (Pagina 125)

MVI71-DFNT ♦ PLC 5 Reference

EtherNet/IP Client/Server Communication Module User Manual

ProSoft Technology, Inc. Page 125 of 175

February 3, 2011

5.11.13 Function Code #502 - Protected Typed Logical Read (Three

Address Fields)

Column Parameter Description Parameter

1 Enable/Type Word 0=Disabled and 1=Continuous.

2 Virtual Database Address This parameter defines the database address of the first

data point to be associated with the command.

3 Poll Interval Minimum number of seconds to wait before polling with

this command.

4 Count Number of data word values to be considered by the

function.

5 Swap Type Code Swap type code for command: 0=None, 1=Swap words,

2=Swap words & bytes and 3=swap bytes in each word.

Node Address

Address of unit to reach on the data highway.

7 Slot Number Processor slot number in Control/CompactLogix rack.

Use -1 for PLC5 & SLC processors.

Function Code = 502

Logical Read Command

9 File Type SLC file type letter as used in file name string. Valid

values for the system are N, S, F, A, ….

File Number

SLC file number to be associated with the command.

11 Element Number The parameter defines the element in the file where

write operation will start.

Sub-Element Number

This parameter defines the sub-element for the

command. Refer to the AB documentation for a list of

valid sub-element codes.

This function reads one or more words of data from a PLC data table. This

function should work on the following devices: SLC 500, SLC 5/03 and SLC 5/04.

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Prosoft-technology MVI71-DFNT Manual de usuario Pagina 125