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 13), making parameter read and write possible.
The following sections describe how to configure the ACS 400 for more sophisticated
communication and control.
Table 13 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.
132
ACS 400 User's Manual
http://nicontrols.com