User Modbus - ComAp InteliSys NTC Basebox Communications Manual

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Registers(s)
Com.Obj.
Name
Dim
Type
Len
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9.6 User Modbus

This function is available to BaseBox controller with standard FW v 3.0 and higher.
User Modbus function allows users to assign up to 127 registers from range 42873 to 43000 to any value or
setpoint available for Modbus reading or writing in the controller. This can be used for standardizing the Modbus
communication or for quick batch reading or writing (note that it is possible to write no more than 16 registers in
on multiple writing request).
It is not possible to read or write both standard registers and User Modbus registers in one request (e.g. batch
reading of registers 42998 to 43007 is not possible). It is perfectly fine to separate the request and read User
Modbus registers and standard registers individually.
IGS-NT Communication Guide
Register number; register address = register number – 1
Corresponding communication object number
Communication object name
Value dimension
Value data type (see Data types on page 146)
Data length in Bytes (max. 64)
Number of decimals
Value low limit
Value high limit
Group of setpoints/values
Description
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