98 
   
 
Communication 
3ADW000379R0501 DCS550 Manual e e 
Ethernet/IP communication with fieldbus adapter RETA-01 
General 
This chapter gives additional information using the Ethernet adapter RETA-01 together with the DCS550. 
RETA-01 - DCS550 
The Ethernet/IP communication with the drive requires the option RETA-01. 
Related documentation 
User’s Manual Ethernet Adapter Module RETA-01. The quoted page numbers correspond to the User’s 
Manual. 
EDS file 
The EDS file for RETA-01 and DCS550 is available. Please ask Your local ABB agent for the newest one 
concerning the current DCS550 firmware. 
Mechanical and electrical installation 
If not already done so insert RETA-01 into slot 1 of the drive. 
Drive configuration 
Activate the Ethernet adapter by means of CommModule (98.02). Please note that the DCS550 works with the 
instances 102 / 103, if Protocol (51.16) is set to 2 (Ethernet/IP ABB Drives communication profile). The 
instances 100 / 101, 20 / 70 and 21 / 71 are also supported, if Protocol (51.16) is set to 1 (Ethernet/IP AC/DC 
communication profile). With these instances, it is not possible to use the full flexibility of the DCS550. For 
more information, see User’s Manual. 
Parameter setting example using Ethernet/IP ABB Drives communication profile 
Ethernet/IP ABB Drives communication profile uses up to 4 data words in each direction by default. The 
internal connection from and to the DCS550 has to be done by means of parameter group 51. 
Ethernet/IP ABB Drives communication profile uses up to 12 data words in each direction. 
Note: 
The DCS550 supports up to 10 data words. 
The configuration has to be done via fieldbus link configuration using Vendor Specific Drive I/O Object (Class 
91h). 
 
MainCtrlWord (7.01); 
output data word 1 (control word) 1
st
 data word from 
overriding control to drive 
SpeedRef (23.01); 
output data word 2 (speed reference) 2
nd
 data word from 
overriding control to drive 
MainStatWord (8.01); 
input data word 1 (status word) 1
st
 
data word from drive to 
overriding control 
MotSpeed (1.04); 
input data word 2 
(speed actual) 2
nd
 data word from drive 
 
Auto-negotiate; 
automatic, set baud rate as required