Prosoft-technology MVI69L-MBS Uživatelský manuál stáhnout pdf (Strana 58)

MVI69L-MBS Configuration MVI69L-MBS ♦ CompactLogix Platform

User Manual Communication Module

Page 58 of 154 ProSoft Technology, Inc.

January 6, 2014

3 – Read Holding Registers (4xxxx)

4 – Read Input Registers (3xxxx)

5 – Force (Write Single) Coil (0xxxx)

6 – Force (Write Single) Holding Register (4xxxx)

15 – Preset (Write) Multiple Coils (0xxxx)

16 – Preset (Write) Multiple Registers (4xxxx)

MB Address in

Device

0 to 9999

Specifies the register or digital point address offset within

the Modbus slave device. The MBS Master reads or writes

from/to this address within the slave.

Refer to the documentation of each Modbus slave device for

their register and digital point address assignments.

Note: The value entered here does not need to include the

“Modbus Prefix” addressing scheme. Also, this value is an

offset of the zero-based Modbus addressing scheme.

Example: Using a Modbus Function Code 3 to read from

address 40010 in the slave, a value of ‘9’ would be entered

in this parameter. The firmware (internally) adds a ‘40001’

offset to the value entered. This is the same for all Modbus

addresses (0x, 1x, 3x, 4x).

Override Value

Upon Error

This parameter is only applicable for Enable Codes 3

(Bit/Word Override) or 4 (Float Override).

If an error occurs associated to a read command the module

automatically populates the associated database area with

this override value.

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Prosoft-technology MVI69L-MBS Uživatelský manuál Strana 58