Table of Contents
Advertisement
34 Modbus/TCP – Start-up
The selection must correspond to the slot where the adapter module is installed.
For example, if the adapter module is installed in slot 1, you must select slot 1.
3.
With parameter 50.02 FBA A comm loss func, select how the drive reacts to a
fieldbus communication break.
Note that this function monitors both communication between the fieldbus master
and the adapter module and communication between the adapter module and
the drive.
4.
With parameter 50.03 FBA A comm loss t out, define the time between
communication break detection and the selected action.
5.
Select application-specific values for the rest of the parameters in group 50,
starting from 50.04. Examples of appropriate values are shown in the tables below.
6.
Set the module configuration parameters in group 51.
•
Select the communication protocol and profile with parameter 51.02 and
configure the network settings with parameters 51.03...51.13.
•
With parameters 51.20 and 51.21, select how the adapter module detects
fieldbus communication breaks.
7.
Define the process data transferred to and from the drive in parameter groups
52 and 53.
Note: The adapter module assigns the Control word, Status word, references 1...2
and actual values 1...2 automatically to Modbus registers. Process data groups
are not available in the ABB Drives - Classic communication profile.
8.
Save the valid parameter values to permanent memory with parameter 96.07
Parameter save manually.
9.
Validate the settings made in parameter groups 51, 52 and 53 with parameter
51.27 FBA A par refresh.
10. Set the relevant drive control parameters to control the drive according to the
application.
Examples of appropriate values are shown in the tables below.
Parameter setting examples – ACS480 and ACx580 drives
￭
Frequency control using the ABB Drives – Enhanced communication profile
This example shows how to configure a frequency control application that uses the
ABB Drives - Enhanced profile. In addition, some application-specific data is added to
the communication.
The start/stop commands and reference are according to the ABB Drives profile. For
more information, see section
In the frequency control mode, when Reference 1 (REF1) is used, a reference value of
±20000 (4E20h) corresponds to the reference set with parameter 46.02 Frequency
scaling in the forward and reverse directions.
The minimum and maximum 16-bit integer values that can be given through the fieldbus
are -32768 and 32767 respectively.
Output data
Control word
Frequency reference
ABB Drives communication profile (page
Modbus register
Input data
(4)00001
Status word
(4)00002
Frequency actual value
40).
Modbus register
(4)00051
(4)00052
Advertisement
Table of Contents
