ABB ACQ80, Firmware Manual

Page: 343 / 390

Fieldbus control through the embedded fieldbus interface (EFB) 343
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.
The AC500 PLC has a free version library called ‘PS553 drives’ which help user to
communicate and control between PLC and drives easily.
Drive
ON
TE
R
M
ON
BI
AS
SLOT 1
TERM ON
1)
BIAS ON
2)
Drive
ON
TE
R
M
ON
BI
AS
TERM OFF
BIAS OFF
...
Process I/O (cyclic)
Service messages
(acyclic)
Data flow
Control Word (CW)
Status Word (SW)
Actual values
Parameter R/W
requests/responses
Fieldbus controller
Fieldbus
Drive
ON
TE
R
M
ON
BI
AS
SLOT 1
TERM OFF
BIAS OFF
Termination ON
1)
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.
SLOT 1