Setting Up Communication Through The Standard Modbus Link - ABB ACS800 Firmware Manual

Setting up communication through the Standard Modbus Link

An RMBA-01 Modbus Adapter installed in slot 1 or 2 of the drive forms an interface
called the Standard Modbus Link. The Standard Modbus Link can be used for
external control of the drive by a Modbus controller (RTU protocol only).
Before configuring the drive for Modbus control, the adapter module must be
mechanically and electrically installed according to the instructions given in the
hardware manual of the drive, and the module manual.
The following table lists the parameters, which need to be defined when setting up
communication through the standard Modbus link.
Parameter Alternative settings
COMMUNICATION INITIALISATION
98.02 NO
FIELDBUS
ADVANT
STD MODBUS
CUSTOMISED
98.07 ABB DRIVES
GENERIC
CSA 2.8/3.0
COMMUNICATION PARAMETERS
52.01 1 to 247
52.02 600
1200
2400
4800
9600
19200
52.03 ODD
EVEN
NONE1STOPBIT
NONE2STOPBIT
After the communication parameters in group 52 STANDARD MODBUS have been
set, the drive control parameters (section
must be checked and adjusted where necessary.
Setting for control
through Standard
Modbus Link
STD MODBUS
ABB DRIVES
–
–
–
Function/Information
Initialises communication between drive
(Standard Modbus Link) and Modbus-protocol
controller. Activates communication parameters
in group 52.
Selects the communication profile used by the
drive. See section Communication profiles
page 249.
Specifies the station number of the drive on the
Standard Modbus Link.
Defines the communication speed for the
Standard Modbus Link.
Selects the parity setting for the Standard
Modbus Link.
Drive control parameters
233
on
on page 237)
Fieldbus control