Communication Settings - ABB ACS 400 User Manual

Communication settings

Communication settings define the communication speed, parity checking, number of stop bits and
fault functions. These settings for Channel 1 are defined using parameters in groups 50
COMMUNICATION and 52 STANDARD MODBUS.
Default communication settings for Channel 1 are listed in Table 18. To be able to communicate
with the master device, the ACS 400 must use the same communication speed and parity settings
as the master.
Further information on all the parameters and their alternative settings is given in chapter "ACS 400
Complete Parameter List" on page 55.
Table 19 Communication parameters.
Code Parameter Name
Group 52
STANDARD MODBUS
5201
STATION NUMBER
5202
COMM SPEED
5203
PARITY
Group 50
COMMUNICATION
5003
COMM FAULT TIME
5004
COMM FAULT FUNC
5005
PROTOCOL SEL
ACS 400 User's Manual
Alternative
Default Setting Function/Information
Settings
1 - 247 1
3 = 300 bps 96 (9600 bits/s) Communication speed.
...
192 = 19200 bps
0 = 0 (
NONE NONE
1 =
EVEN
2 =
ODD
0.1 - 60.0 s 1.0 s
0 = 0 (
NOT SEL NOT SEL
1 =
FAULT
2 = 7
CONST SP
3 =
LAST SPEED
0 = 0 (
NOT SEL NOT SEL
1 =
DDCS
2 =
STD MODBUS
3 = +
STD MDB DDCS
Slave number for ACS 400 in
Modbus network.
) Parity and stop bit setting.
Time limit for communication loss
detection.
) Operation in case communication
with the master device is lost.
) Communication protocol selection.
Normally must be set to
.
MODBUS
STD
119