Activating Modbus Protocol - ABB ACS 400 User Manual

Activating Modbus Protocol

As a factory setting, Channel 1 is not operational. To activate standard Modbus protocol for
Channel 1, set parameter 5005 to 2 ( ).
PROTOCOL SEL STD MODBUS
After this single modification, the ACS 400 is ready to communicate via Channel 1 using the default
communication settings (given in Table 18), making parameter read and write possible.
Following sections describe how to configure the ACS 400 for more sophisticated communication
and control.
Table 18 Default communication settings of Channel 1.
Communication Number of
Station number Parity bit Stop bits
speed data bits
1 9600 bps none two 8
Note! Protocol must be reactivated after the communication settings are changed.
118 ACS 400 User's Manual