Connecting The Fieldbus To The Drive - ABB ACQ80-04 Firmware Manual

222 Fieldbus control through the embedded fieldbus interface (EFB)

Connecting the fieldbus to the drive

Connect the fieldbus to terminal slot, which is attached on the control unit of the drive.
The connection diagram is shown below.
SLOT 1
TERM OFF
BIAS OFF
Drive
1)
The device at both ends on the fieldbus must have termination on.
2)
One device, preferably at the end on the fieldbus must have bias on.
The AC500 PLC has a free version library called 'PS553 drives' which help user to
communicate and control between PLC and drives easily.
Data flow
Control Word (CW)
Status Word (SW)
Actual values
Parameter R/W
requests/responses
SLOT 1
TERM OFF
BIAS OFF
Drive
Fieldbus controller
Termination ON
Fieldbus
Process I/O (cyclic)
Service messages (acyclic)
...
TERM ON
BIAS ON
Drive
1)
SLOT 1
1)
2)