ProSoft Technology MVI69L-MBS - Manual (Page 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.