InteliMains
NT
, SW version 3.2.0
InteliMains-NT-MCB-MGCB-3.2.0-Reference Guide.pdf, ©ComAp – April 2015
7.23 User MODBUS
Users can define Modbus registers from 42873 to 43000. Values, setpoints and Alarm states can be
specified for these new Modbus registers to prepare the Modbus protocol for batch reading and writing
or to standardize Modbus protocol between FW versions or branches.
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.
User Modbus register number
Standard Modbus register number
Communication object number
Value, Setpoint, Alarm state
Select type
Select object
NOTE:
User MODBUS function is not available for IM-NT-GC controller.
7.24 Modbus Switches
The “Modbus Switches” are two Modbus registers dedicated for continuous writing of binary
information via Modbus. Both registers are available on Modbus for simple writing (using command 6
or 16). The particular bits of these registers are available as binary status for universal use in logical
binary outputs of the controller as “MODBUSSW1 .. MODBUSSW32”. No password is required for writing
of those registers (if there is no general password for Modbus writing). There are two Values
“ModbusSw1” and “ModbusSw2” in group “Log Bout” available for back-reading.
NOTE:
The LSB of ModbusSw1 (46337) coresponds with LBO “ModbusSw1”
The LSB of ModbusSw2 (46338) coresponds with LBO “ModbusSw17”
Examples:
Register port for
writing
LBO ModbusSw16 ………………….ModbusSw1
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