Prosoft-technology MVI69E-MBS Manual de usuario descargar pdf (Pagina 130)

Reference MVI69E-MBS ♦ CompactLogix Platform

User Manual Communication Module

Page 130 of 162 ProSoft Technology, Inc.

January 6, 2014

Func Code - Tells the Master to read the register values from the Slave. FC3.

Addr in Dev - Tells the Master where in the Slave's database to obtain the data.

In the above example, the Master's Modbus command to transmit inside the

Modbus packet is as follows.

Slave address

Function Code

Address in Device

Reg count

DEC

6100

HEX

17 D4

00 02

In the above example the (Enron/Daniel supporting) Slave's Modbus command to

transmit inside the Modbus packet is as follows.

Slave address

Function Code

Byte Count

Data

DEC

32.75 275.69

HEX

00 00 42 03 D8 52 43 89

In the above example the (a NON-Enron/Daniel supporting) Slave's Modbus

command that is transmitted inside the Modbus packet is as follows.

Slave address

Function Code

Byte Count

Data

DEC

32.75

HEX

00 00 42 03

1 2 ... 125 126 127 128 129 130 131 132 133 134 135 ... 161 162

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Prosoft-technology MVI69E-MBS Manual de usuario Pagina 130