ABB ACS560 - Page 438

438 Fieldbus control through the embedded fieldbus interface (EFB)
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
TERM
ON
BIAS
SLOT 1
TERM ON
1)
BIAS ON
2)
Drive
ON
TERM
ON
BIAS
TERM OFF
BIAS OFF
...
Process I/O (cyclic)
Service messages (acyclic)
Data flow
Control Word (CW)
References
Status Word (SW)
Actual values
Parameter R/W
requests/responses
Fieldbus controller
Fieldbus
Drive
ON
TERM
ON
BIAS
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