Setting Up Communication Through The Standard Modbus Link - ABB ACS800 Series 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
COMMUNICATION INITIALISATION
98.02
COMMUNICATION PARAMETERS
52.01
52.02
52.03
After the communication parameters in group 52 have been set, the drive control
parameters (section
and adjusted where necessary.
Alternative Setting for
Settings Control through
Standard
Modbus Link
NO STD MODBUS
FIELDBUS
ADVANT
STD MODBUS
1...247 –
600 –
1200
2400
4800
9600
19200
ODD –
EVEN
NONE1STOPBIT
NONE2STOPBIT
The fieldbus control interface
Function/Information
Initializes communication between drive
(Standard Modbus Link) and Modbus-
protocol controller. Activates
communication parameters in group 52.
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.
on page 147) must be checked
Fieldbus control
143