Prosoft-technology MVI69E-MBS Bedienungsanleitung PDF herunterladen (Seite 124)

Reference MVI69E-MBS ♦ CompactLogix Platform

User Manual Communication Module

Page 124 of 162 ProSoft Technology, Inc.

January 6, 2014

7.2.10 Preset Multiple Registers (Function Code 16)

Query

This Function Code allows you to modify the contents of a Modbus 4x range in

the slave. This writes up to 125 registers at time. Since the controller is actively

scanning, it also can alter the content of any holding register at any time.

Note: Function codes 5, 6, 15, and 16 are the only messages that are recognized as valid for

broadcast.

The example below is a request to write 2 registers starting at register 40002 in

slave 11.

Node

Addrs

Func

Code

Data Start

Addrs

High

Data Start

Addrs

Low

Number

Points

High

Number

Points

Low

Byte

Count

Data

High

Data

Low

Data

High

Data

Low

Error

Check

Field (2

bytes)

CRC

Response

The normal response to a function 16 query is to echo the address, function

code, starting address and number of registers to be loaded.

Node

Address

Function

Code

Data Start

Address High

Data Start

Address Low

Number of

Points High

Number of

Points Low

Error Check

Field (2

bytes)

CRC

1 2 ... 119 120 121 122 123 124 125 126 127 128 129 ... 161 162

Kommentare zu diesen Handbüchern

Keine Kommentare

Prosoft-technology MVI69E-MBS Bedienungsanleitung Seite 124

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Relais Prosoft-technology MVI69E-MBS